D W Murray

Summary

Affiliation: University of Oxford
Country: UK

Publications

  1. doi request reprint Improved fixation in cementless unicompartmental knee replacement: five-year results of a randomized controlled trial
    H Pandit
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Botnar Research Centre, Windmill Road, Headington, Oxford OX3 7LD, United Kingdom E mail address for D W Murray
    J Bone Joint Surg Am 95:1365-72. 2013
  2. doi request reprint Ten-year RSA-measured migration of the Exeter femoral stem
    D W Murray
    Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford OX3 7LD, UK
    Bone Joint J 95:605-8. 2013
  3. doi request reprint The ten-year survival of the Birmingham hip resurfacing: an independent series
    D W Murray
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 94:1180-6. 2012
  4. ncbi request reprint Strain distribution within the human femur due to physiological and simplified loading: finite element analysis using the muscle standardized femur model
    K Polgar
    Oxford Orthopaedic Engineering Collaboration, Nuffield Department of Orthopaedic Surgery, University of Oxford, The Botnar Research Centre, Nuffield Orthopaedic Centre, Headington, Oxford, UK
    Proc Inst Mech Eng H 217:173-89. 2003
  5. doi request reprint Cementless Oxford unicompartmental knee replacement shows reduced radiolucency at one year
    H Pandit
    Oxford Orthopaedic Engineering Centre, Nuffield Department of Orthopaedic Surgery, Botnar Research Centre, Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 91:185-9. 2009
  6. ncbi request reprint Ten-year in vivo wear measurement of a fully congruent mobile bearing unicompartmental knee arthroplasty
    A J Price
    Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 87:1493-7. 2005
  7. doi request reprint The relationship between head-neck ratio and pseudotumour formation in metal-on-metal resurfacing arthroplasty of the hip
    G Grammatopoulos
    Botnar Research Centre, Nuffield Orthopaedic Centre, 150 Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 92:1527-34. 2010
  8. doi request reprint Accuracy evaluation of fluoroscopy-based 2D and 3D pose reconstruction with unicompartmental knee arthroplasty
    B H Van Duren
    Nuffield Department of Orthopaedic Surgery, University of Oxford, UK
    Med Eng Phys 31:356-63. 2009
  9. ncbi request reprint The Oxford medial unicompartmental knee replacement using a minimally-invasive approach
    H Pandit
    Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 88:54-60. 2006
  10. doi request reprint Polyethylene wear in Oxford unicompartmental knee replacement: a retrieval study of 47 bearings
    B J L Kendrick
    Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 92:367-73. 2010

Collaborators

Detail Information

Publications85

  1. doi request reprint Improved fixation in cementless unicompartmental knee replacement: five-year results of a randomized controlled trial
    H Pandit
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Botnar Research Centre, Windmill Road, Headington, Oxford OX3 7LD, United Kingdom E mail address for D W Murray
    J Bone Joint Surg Am 95:1365-72. 2013
    ..The objectives of this study were to compare the quality of fixation as well as clinical outcomes of cemented and cementless unicompartmental knee replacements at five years of follow-up...
  2. doi request reprint Ten-year RSA-measured migration of the Exeter femoral stem
    D W Murray
    Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford OX3 7LD, UK
    Bone Joint J 95:605-8. 2013
    ..This appears to compress the cement and the cement bone interface, contributing to secure fixation in the long term. Cite this article: Bone Joint J 2013;95-B:605-8...
  3. doi request reprint The ten-year survival of the Birmingham hip resurfacing: an independent series
    D W Murray
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 94:1180-6. 2012
    ..In contrast, the results in women have been poor and we do not recommend metal-on-metal resurfacing in women. Continuous follow-up is recommended because of the increasing incidence of pseudotumour with the passage of time...
  4. ncbi request reprint Strain distribution within the human femur due to physiological and simplified loading: finite element analysis using the muscle standardized femur model
    K Polgar
    Oxford Orthopaedic Engineering Collaboration, Nuffield Department of Orthopaedic Surgery, University of Oxford, The Botnar Research Centre, Nuffield Orthopaedic Centre, Headington, Oxford, UK
    Proc Inst Mech Eng H 217:173-89. 2003
    ..Omitting muscle forces or fixing the femur in mid-shaft leads to large unphysiological strain values...
  5. doi request reprint Cementless Oxford unicompartmental knee replacement shows reduced radiolucency at one year
    H Pandit
    Oxford Orthopaedic Engineering Centre, Nuffield Department of Orthopaedic Surgery, Botnar Research Centre, Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 91:185-9. 2009
    ..In the cementless implants, partial radiolucencies were seen in 7% and complete radiolucencies in none. These differences are statistically significant (p < 0.0001) and imply satisfactory bone ingrowth into the cementless implants...
  6. ncbi request reprint Ten-year in vivo wear measurement of a fully congruent mobile bearing unicompartmental knee arthroplasty
    A J Price
    Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 87:1493-7. 2005
    ..At ten years, the mean linear wear rate was 0.02 mm/year. The results from this in vivo study confirm that the device has low ten-year linear wear in clinical practice. This may offer the device a survival advantage in the long term...
  7. doi request reprint The relationship between head-neck ratio and pseudotumour formation in metal-on-metal resurfacing arthroplasty of the hip
    G Grammatopoulos
    Botnar Research Centre, Nuffield Orthopaedic Centre, 150 Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 92:1527-34. 2010
    ..As the incidence of pseudotumour is low in men, it appears safe to perform resurfacing in men. However, this study suggests that it is also reasonable to resurface in women with a pre-operative HNR ≤ 1.3...
  8. doi request reprint Accuracy evaluation of fluoroscopy-based 2D and 3D pose reconstruction with unicompartmental knee arthroplasty
    B H Van Duren
    Nuffield Department of Orthopaedic Surgery, University of Oxford, UK
    Med Eng Phys 31:356-63. 2009
    ..1mm RMS. The rotational accuracies were between 0.6 degrees and 2.3 degrees which are less accurate than those reported in the literature for TKA, however, the method is sufficient for studying overall knee kinematics...
  9. ncbi request reprint The Oxford medial unicompartmental knee replacement using a minimally-invasive approach
    H Pandit
    Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 88:54-60. 2006
    ..This study demonstrates that the minimally-invasive Oxford unicompartmental knee replacement is a reliable and effective procedure...
  10. doi request reprint Polyethylene wear in Oxford unicompartmental knee replacement: a retrieval study of 47 bearings
    B J L Kendrick
    Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 92:367-73. 2010
    ..However, if the bearing displays suboptimal function (extra-articular, intra-articular impingement or incongruous articulation) the rates of wear increase significantly...
  11. ncbi request reprint Pre-operative clinical and radiological assessment of the patellofemoral joint in unicompartmental knee replacement and its influence on outcome
    D J Beard
    Department of Orthopaedic Surgery, University of Oxford, Oxford, OX3 7LD, UK
    J Bone Joint Surg Br 89:1602-7. 2007
    ..With lateral patellofemoral degeneration the situation is less well defined and caution should be observed...
  12. ncbi request reprint Combined anterior cruciate reconstruction and Oxford unicompartmental knee arthroplasty
    H Pandit
    Nuffield Department of Orthopaedic Surgery, University of Oxford, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 88:887-92. 2006
    ..This operation seems to be a viable treatment option for young active patients with symptomatic arthritis of the medial compartment, in whom the anterior cruciate ligament has been ruptured...
  13. ncbi request reprint Load transfer in the proximal tibia following implantation with a unicompartmental knee replacement: a static snapshot
    D J Simpson
    OOEC, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
    Proc Inst Mech Eng H 225:521-9. 2011
    ..Moreover, a mechanical tie had the effect of reducing proximal tibia strain, which may decrease the incidence of pain following implantation with a UKR...
  14. doi request reprint Combined anterior cruciate reconstruction and Oxford unicompartmental knee arthroplasty: in vivo kinematics
    H Pandit
    Nuffield Department of Orthopaedic Surgery, University of Oxford, UK
    Knee 15:101-6. 2008
    ..As the relative position of the components and thus component loading are similar to the ACLI UKA, we would expect similar long term survival...
  15. doi request reprint Influence of component alignment on outcome for unicompartmental knee replacement
    A Gulati
    Nuffield Department of Orthopaedic Surgery, University of Oxford, OX3 7LD, UK
    Knee 16:196-9. 2009
    ..We conclude that, because of the spherical femoral component, the Oxford UKR is tolerant to femoral mal-alignment of 10 degrees and tibial mal-alignment of 5 degrees...
  16. doi request reprint Hip resurfacings revised for inflammatory pseudotumour have a poor outcome
    G Grammatopolous
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Services University of Oxford, Headington, Oxford OX37LD, UK
    J Bone Joint Surg Br 91:1019-24. 2009
    ..The outcome of revision for pseudotumour is poor and consideration should be given to early revision to limit the extent of the soft-tissue destruction. The outcome of resurfacing revision for other causes is good...
  17. ncbi request reprint In vivo measurement of volumetric wear of a total knee replacement
    H S Gill
    OOEC Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Oxford, OX3 7LD, UK
    Knee 13:312-7. 2006
    ..Volumetric wear was estimated to be 600-700 mm(3)/year at 6.4 years, equating to approximately 100 mm(3)/year. This does not appear to be clinically significant amount of wear as this prosthesis has excellent survival at 10 years...
  18. doi request reprint Polyethylene wear of mobile-bearing unicompartmental knee replacement at 20 years
    B J L Kendrick
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Biomedical Research Unit, Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 93:470-5. 2011
    ..We conclude that the design of the Oxford UKR gives low rates of wear in the long term...
  19. doi request reprint Mobile bearing dislocation in lateral unicompartmental knee replacement
    H Pandit
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Headington, Oxford, UK
    Knee 17:392-7. 2010
    ..04 and p=0.03) in the different series. The combination of the modified surgical technique and new design with a domed tibial component appears to have reduced the early dislocation rate to an acceptable level...
  20. ncbi request reprint Effect of modular neck variation on bone and cement mantle mechanics around a total hip arthroplasty stem
    D J Simpson
    Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Oxford, UK
    Clin Biomech (Bristol, Avon) 24:274-85. 2009
    ..Total hip arthroplasty carried out using cemented modular-neck implants provides the surgeon with greater intra-operative flexibility and allows more controlled stem positioning...
  21. doi request reprint Histology of the bone-cement interface in retrieved Oxford unicompartmental knee replacements
    B J L Kendrick
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Nuffield Orthopaedic Centre, Windmill Road, Oxford, OX3 7LD, UK
    Knee 19:918-22. 2012
    ..The second aim is to assess whether a correlation exists between the presence of a RLL and the type of tissue that predominates at the interface...
  22. ncbi request reprint A convex lateral tibial plateau for knee replacement
    J V Baré
    OOEC Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Oxford, UK
    Knee 13:122-6. 2006
    ..The optimal shape for a unicompartmental lateral tibial plateau is likely to be a spherical dome with radius of about 75 mm. The incorporation of this shape in the lateral side of a total knee replacement might improve its flexion...
  23. doi request reprint The creep and wear of highly cross-linked polyethylene: a three-year randomised, controlled trial using radiostereometric analysis
    S Glyn-Jones
    Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Windmill Road, Oxford OX37LD, UK
    J Bone Joint Surg Br 90:556-61. 2008
    ..Highly cross-linked polyethylene has a 60% lower rate of wear than standard polyethylene and therefore will probably perform better in the long term...
  24. ncbi request reprint Development of a model-based Roentgen stereophotogrammetric analysis system to measure polyethylene wear in unicompartmental arthroplasty
    D J Simpson
    Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK
    Proc Inst Mech Eng H 224:1235-43. 2010
    ..The technique does not require surgical implantation of marker balls and can be used retrospectively...
  25. doi request reprint Early revisions of the Femoro-Patella Vialla joint replacement
    D P Williams
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, University of Oxford, Windmill Road, Oxford OX3 7LD, UK
    Bone Joint J 95:793-7. 2013
    ..Standardised radiological imaging, with MRI to exclude overt tibiofemoral disease should be part of the pre-operative assessment, especially for the non-dysplastic knee...
  26. doi request reprint Examination of ten fractured Oxford unicompartmental knee bearings
    E Pegg
    Botnar Research Centre, Nuffield Orthopaedic Centre, University of Oxford, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 93:1610-6. 2011
    ..A posterior marker wire is no longer used in the polyethylene meniscus. Therefore, the rate of fracture, which is now very low, should be reduced to a negligible level...
  27. doi request reprint The migration patterns of two versions of the Furlong cementless femoral stem: a randomised, controlled trial using radiostereometric analysis
    D J Simpson
    Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 92:1356-62. 2010
    ..The changes in the geometry of the stem, to minimise stress have affected the attainment of initial stability...
  28. doi request reprint Improved quadriceps' mechanical advantage in single radius TKRs is not due to an increased patellar tendon moment arm
    T R Ward
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, OX3 7LD, UK
    Knee 19:564-70. 2012
    ..A simple patellar model demonstrated that the reduced PFA may explain a large proportion of the reduction in QF after single radius TKR...
  29. doi request reprint The effect of motion patterns on edge-loading of metal-on-metal hip resurfacing
    S J Mellon
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK
    Med Eng Phys 33:1212-20. 2011
    ....
  30. ncbi request reprint A novel method for in vivo knee prosthesis wear measurement
    A Short
    OOEC Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK
    J Biomech 38:315-22. 2005
    ..Interpenetration of the metal femoral component into the polyethylene component could then be established and represents our estimate of "wear". This method was used to measure in vivo prosthesis wear to an accuracy of 0.11 mm...
  31. doi request reprint Optimal acetabular orientation for hip resurfacing
    G Grammatopoulos
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences University of Oxford, Botnar Research Centre, Nuffield Orthopaedic Centre, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 92:1072-8. 2010
    ..Because of differences between the radiographic and the operative angles, this may be best achieved by aiming for an inclination of 40 degrees and an anteversion of 25 degrees...
  32. doi request reprint Are pain and function better measures of outcome than revision rates after TKR in the younger patient?
    A J Price
    The Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, NIHR Biomedical Research Unit, The Nuffield Orthopaedic Centre NHS Trust, Oxford, UK
    Knee 17:196-9. 2010
    ..Survival based on revision alone provides an acceptable but inaccurate impression of outcome in younger TKR patients (under 60 years). A true representation of the success of TKR should include pain and function as endpoints...
  33. ncbi request reprint The premature failure of the Charnley Elite-Plus stem: a confirmation of RSA predictions
    J Hauptfleisch
    Oxford Orthopaedic Engineering Centre The Botnar Research Centre, University of Oxford, Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 88:179-83. 2006
    ..Our findings have also shown that rapid posterior head migration is predictive of premature loosening and a better predictor than subsidence...
  34. ncbi request reprint In vivo kinematics of the ACL-deficient limb during running and cutting
    J C Waite
    Oxford Orthopaedic Engineering Collaboration, Botnar Centre, Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford OX3 7LD, UK
    Knee Surg Sports Traumatol Arthrosc 13:377-84. 2005
    ....
  35. ncbi request reprint The influence of the presence and severity of pre-existing patellofemoral degenerative changes on the outcome of the Oxford medial unicompartmental knee replacement
    D J Beard
    University of Oxford, Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 89:1597-601. 2007
    ....
  36. doi request reprint Outcome of combined unicompartmental knee replacement and combined or sequential anterior cruciate ligament reconstruction: a study of 52 cases with mean follow-up of five years
    J S Weston-Simons
    Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 94:1216-20. 2012
    ..In summary, ACL reconstruction and Oxford UKR gives good results in patients with end-stage MCOA secondary to ACL deficiency...
  37. ncbi request reprint In-vivo sagittal plane knee kinematics: ACL intact, deficient and reconstructed knees
    D L Isaac
    Oxford Orthopaedic Engineering Centre, Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford OX3 7LD, UK
    Knee 12:25-31. 2005
    ..These findings have implications for the development of ACL rehabilitation regimes, and also may modify graft choice and the surgical aims of the procedure...
  38. ncbi request reprint Influence of stem geometry on the stability of polished tapered cemented femoral stems
    S Glyn-Jones
    Oxford Orthopaedic Engineering Centre, The Botnar Research Centre, Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 87:921-7. 2005
    ..07 [correction] degrees, sd 0.29 [correction] degrees ) or internal rotation (mean -0.03 degrees , sd 0.75 degrees ). A wider, more rectangular cross-section improves rotational stability and may have a better long-term outcome...
  39. ncbi request reprint No deterioration of kinematics and cruciate function 10 years after medial unicompartmental arthroplasty
    D Hollinghurst
    Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Oxford, UK
    Knee 13:440-4. 2006
    ..The results suggest that after fixed bearing UKA the cruciate mechanism remains intact over time and the ligaments continue to function similarly to those of the normal knee...
  40. doi request reprint The incidence of physiological radiolucency following Oxford unicompartmental knee replacement and its relationship to outcome
    A Gulati
    Botnar Research Centre, Nuffield Department of Orthopaedic Surgery, University of Oxford, UK
    J Bone Joint Surg Br 91:896-902. 2009
    ..Therefore, when attempting to identify a source of postoperative pain after Oxford unicompartmental knee replacement the presence of a physiological radiolucency should be ignored...
  41. ncbi request reprint Introduction of a new mobile-bearing total knee prosthesis: minimum three year follow-up of an RCT comparing it with a fixed-bearing device
    D J Beard
    University Research Lecturer and RCUK Fellow, Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Oxford, UK
    Knee 14:448-51. 2007
    ....
  42. doi request reprint Minimally invasive Oxford phase 3 unicompartmental knee replacement: results of 1000 cases
    H Pandit
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK
    J Bone Joint Surg Br 93:198-204. 2011
    ..The survival rates are similar to those obtained with a standard open approach whereas the function is better. This demonstrates the effectiveness and safety of a minimally invasive surgical approach for implanting the Oxford UKR...
  43. doi request reprint The implications of damage to the lateral femoral condyle on medial unicompartmental knee replacement
    B J L Kendrick
    Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 92:374-9. 2010
    ....
  44. ncbi request reprint How effective are added constraints in improving TKR kinematics?
    B H Van Duren
    Nuffield Department of Orthopaedic Surgery, Botnar Research Centre, Nuffield Orthopaedic Ctr, University of Oxford, Oxford, OX3 7LD, UK Department of Engineering Science, University of Oxford, UK
    J Biomech 40:S31-7. 2007
    ..However, the results show that at high flexion this design does not achieve normal knee kinematics...
  45. doi request reprint In vivo sagittal plane kinematics of the FPV patellofemoral replacement
    A P Monk
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
    Knee Surg Sports Traumatol Arthrosc 20:1104-9. 2012
    ....
  46. ncbi request reprint Influence of surface geometry and the cam-post mechanism on the kinematics of total knee replacement
    H Pandit
    OOEC Nuffield Department of Orthopaedic Surgery, Botnar Research Centre, The Nuffield Orthopaedic Centre NHS Trust, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 87:940-5. 2005
    ..These differences suggest that surface geometry is a stronger determinant of kinematics than the presence or absence of a cam-post mechanism for these two designs. This may be because the cam-post mechanism is ineffective...
  47. doi request reprint The effects of age on patient-reported outcome measures in total knee replacements
    D P Williams
    University of Oxford, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Windmill Road, Oxford OX3 7LD, UK
    Bone Joint J 95:38-44. 2013
    ....
  48. ncbi request reprint Development and clinical application of meniscal unicompartmental arthroplasty
    J J O'Connor
    Department of Engineering Science and Oxford Orthopaedic Engineering Centre, University of Oxford, Oxford, UK
    Proc Inst Mech Eng H 221:47-59. 2007
    ..The paper argues the case for such a prosthesis and demonstrates that the usual modes of failure of unicompartmental arthroplasty, most of them biomechanical, can thereby be avoided...
  49. doi request reprint Cementless fixation in Oxford unicompartmental knee replacement: a multicentre study of 1000 knees
    A D Liddle
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, University of Oxford, Windmill Road, Oxford OX3 7LD, UK
    Bone Joint J 95:181-7. 2013
    ..Cementless OUKR appears to be safe and reproducible in patients with end-stage anteromedial osteoarthritis of the knee, with radiological evidence of improved fixation compared with previous reports using cemented fixation...
  50. ncbi request reprint Minimally invasive Oxford unicompartmental knee arthroplasty: functional results at 1 year and the effect of surgical inexperience
    J L Rees
    Oxford Orthopaedic Engineering Centre, Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford OX3 7LD, UK
    Knee 11:363-7. 2004
    ..However, the results during the learning curve are still similar to that achieved after total knee arthroplasty...
  51. doi request reprint Elevated proximal tibial strains following unicompartmental knee replacement--a possible cause of pain
    D J Simpson
    Nuffield Department of Orthopaedic Surgery, University of Oxford, Oxford, OX3 7LD, UK
    Med Eng Phys 31:752-7. 2009
    ..However, certain errors in implantation result in strain values that might lead to degenerative remodelling and/or increased micro-damage of the bone; this may explain why the pain progressively worsens in some cases...
  52. doi request reprint Avascular necrosis associated with fracture of the femoral neck after hip resurfacing: histological assessment of femoral bone from retrieval specimens
    R T Steffen
    Nuffield Orthopaedic Centre, University of Oxford, Oxford, UK
    J Bone Joint Surg Br 92:787-93. 2010
    ..This indicates established avascular necrosis and suggests that damage to the blood supply at the time of surgery is a potent risk factor for fracture of the femoral neck after hip resurfacing...
  53. ncbi request reprint Bicruciate substituting total knee replacement: how effective are the added kinematic constraints in vivo?
    B H Van Duren
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences NDORMS, University of Oxford, Oxford, UK
    Knee Surg Sports Traumatol Arthrosc 20:2002-10. 2012
    ....
  54. doi request reprint Skyline patellofemoral radiographs can only exclude late stage degenerative changes
    S M McDonnell
    Nuffield Orthopaedic Centre NIHR Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, United Kingdom
    Knee 18:21-3. 2011
    ....
  55. doi request reprint The effect of leg alignment on the outcome of unicompartmental knee replacement
    A Gulati
    Botnar Research Centre, Nuffield Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre, University of Oxford, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 91:469-74. 2009
    ..Following UKR the deductions for malalignment in the American Knee Society score are not justified...
  56. doi request reprint The effect of bearing congruency, thickness and alignment on the stresses in unicompartmental knee replacements
    D J Simpson
    Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK
    Clin Biomech (Bristol, Avon) 23:1148-57. 2008
    ..An important cause of failure in a unicompartmental knee replacement implant is polyethylene wear. Significant contributory factors to the amount of polyethylene wear are contact stress, bearing alignment, congruency and thickness...
  57. doi request reprint The management of mobile bearing dislocation in the Oxford lateral unicompartmental knee replacement
    John S Weston-Simons
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Headington, Oxford, OX3 7LD, UK
    Knee Surg Sports Traumatol Arthrosc 19:2023-6. 2011
    ..Seven cases treated in this manner are reported, of which one of the seven has redislocated. In the remaining six, their clinical outcomes are comparable to the outcomes of those without dislocations...
  58. doi request reprint A low-riding patella in posterior stabilised total knee replacements alters quadriceps' mechanical advantage, resulting in reduced knee flexion moments
    T R Ward
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford OX3 7LD, UK
    Knee 19:299-305. 2012
    ..Consequently, PS subjects stepped-up more cautiously with a reduced knee flexion moment...
  59. doi request reprint Unnecessary contraindications for mobile-bearing unicompartmental knee replacement
    H Pandit
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Nuffield Orthopaedic Centre, University of Oxford, Windmill Road, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 93:622-8. 2011
    ..We conclude that the thresholds proposed by Kozinn and Scott using weight, age, activity, the state of the patellofemoral joint and chondrocalcinosis should not be considered to be contraindications for the use of the Oxford UKR...
  60. doi request reprint Prediction of three-dimensional femoral offset from AP pelvis radiographs in primary hip osteoarthritis
    C Merle
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK
    Eur J Radiol 82:1278-85. 2013
    ..The aim of the present study was to evaluate the accuracy and reliability of predicting three-dimensional (3-D) FO from standardised AP pelvis radiographs...
  61. doi request reprint The five-year results of the Birmingham Hip Resurfacing arthroplasty: an independent series
    R T Steffen
    1Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Oxford, UK
    J Bone Joint Surg Br 90:436-41. 2008
    ..Considering that these patients are young and active these results are good, and support the use of resurfacing. Further study is needed to address the early failures, particularly those related to fracture and metal debris...
  62. doi request reprint A new technique for the radiostereometric analysis of soft tissues
    A M Ashmore
    Oxford Orthopaedic Engineering Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
    J Biomech 45:2931-4. 2012
    ..We describe a modification of tantalum marker balls that allows for immediate secure fixation to soft tissue in order to accurately analyse stretch and displacement of soft tissues using RSA...
  63. doi request reprint Improved radiograph measurement inter-observer reliability by use of statistical shape models
    E C Pegg
    University of Oxford, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK
    Eur J Radiol 81:2585-91. 2012
    ..These encouraging results indicate that semi-automated measurement techniques could improve the reliability of radiographic measurements...
  64. doi request reprint The patho-anatomy of patellofemoral subluxation
    A P Monk
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Nuffield Orthopaedic Centre, Oxford University, Windmill Road, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 93:1341-7. 2011
    ..A clinical trial is necessary to test this hypothesis...
  65. ncbi request reprint Roentgen stereophotogrammetric analysis of the Birmingham hip resurfacing arthroplasty. A two-year study
    S Glyn-Jones
    Botnar Research Centre, University of Oxford, Headington, England, UK
    J Bone Joint Surg Br 86:172-6. 2004
    ..Previous studies have shown that implants which loosen quickly have rapid early migration. Our results therefore suggest that the BHR femoral component is an inherently stable device which is likely to perform well in the long term...
  66. doi request reprint Unicompartmental knee replacement for patients with partial thickness cartilage loss in the affected compartment
    H Pandit
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK
    Knee 18:168-71. 2011
    ..There is a need to develop a method to identify which patients with PTCL will do well so that this subgroup could be treated with UKR...
  67. ncbi request reprint Should total hip arthroplasty femoral components be designed to subside? A radiostereometric analysis study of the Charnley Elite and Exeter stems
    J Alfaro-Adrian
    Oxford Orthopaedic Engineering Centre, and Nuffield Department of Orthopaedic Surgery, University of Oxford, Oxford, United Kingdom
    J Arthroplasty 16:598-606. 2001
    ..Polished, collarless, tapered designs, such as the Exeter, may be more forgiving than conventional stems designed not to subside...
  68. ncbi request reprint The anterolateral approach leads to less disruption of the femoral head-neck blood supply than the posterior approach during hip resurfacing
    R Steffen
    Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 89:1293-8. 2007
    ..This may be reflected subsequently in a lower incidence of fracture of the femoral neck and avascular necrosis...
  69. ncbi request reprint Simultaneous in vitro measurement of patellofemoral kinematics and forces following Oxford medial unicompartmental knee replacement
    A J Price
    Nuffield Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre NHS Trust, Windmill Road, Oxford, UK
    J Bone Joint Surg Br 88:1591-5. 2006
    ..The Oxford device appears to produce near-normal patellofemoral mechanics, which may partly explain the low incidence of complications with the extensor mechanism associated with clinical use...
  70. doi request reprint Characterization of early stage cartilage degradation using diffuse reflectance near infrared spectroscopy
    C P Brown
    Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Windmill Road, Headington, Oxford OX3 7LD, UK
    Phys Med Biol 56:2299-307. 2011
    ..It has the potential to increase our understanding of the underlying etiologic and pathogenic processes in early stage degeneration, to assist classification and the development of new treatment methods...
  71. doi request reprint A critique of revision rate as an outcome measure: re-interpretation of knee joint registry data
    J W Goodfellow
    Botnar Research Centre, Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 92:1628-31. 2010
    ..Furthermore, revision is much less sensitive than the OKS to clinical failure in both types and therefore exaggerates the success of knee replacements, particularly of TKR...
  72. doi request reprint Femoral offset is underestimated on anteroposterior radiographs of the pelvis but accurately assessed on anteroposterior radiographs of the hip
    C Merle
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Nuffield Orthopaedic Centre, University of Oxford, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 94:477-82. 2012
    ..We, therefore, recommend that additional AP radiographs of the hip are obtained routinely for the pre-operative assessment of femoral offset when templating before total hip replacement...
  73. ncbi request reprint The effect of hip resurfacing on oxygen concentration in the femoral head
    R T Steffen
    Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre, Windmill Road, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 87:1468-74. 2005
    ..This study demonstrates that during hip resurfacing arthroplasty, patients experience some compromise to their femoral head blood supply and some have complete disruption...
  74. doi request reprint Genetic influences in the aetiology of femoroacetabular impingement: a sibling study
    T C B Pollard
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences University of Oxford, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 92:209-16. 2010
    ..This risk appears to be manifested through not only abnormal joint morphology, but also through other factors which may modulate progression of the disease...
  75. doi request reprint Loosening of the femoral component after unicompartmental knee replacement
    A P Monk
    Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 91:405-7. 2009
    ..If gaps are present between the component and cement on one radiograph and not on the other, the component is loose...
  76. ncbi request reprint Does a mixed training course on the Oxford unicompartmental knee arthroplasty improve non-technical skills of orthopaedic surgeons?
    A Alvand
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, NIHR Biomedical Research Unit, University of Oxford, Nuffield Orthopaedic Centre, Oxford, UK
    J Orthop Surg (Hong Kong) 20:356-60. 2012
    ..The odds ratio for the pre- versus post-course total test score was 4.36. CONCLUSION. A mixed continuing medical education course could enhance the non-technical (cognitive) skills for UKA...
  77. doi request reprint Long-term trends in the Oxford knee score following total knee replacement
    D P Williams
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, University of Oxford, Windmill Road, Oxford OX3 7LD, UK
    Bone Joint J 95:45-51. 2013
    ..This information may assist surgeons in advising patients of their expected outcomes, as well as providing a comparative benchmark for evaluating longer-term outcomes following knee replacement...
  78. ncbi request reprint Oxford medial unicompartmental knee arthroplasty in patients younger and older than 60 years of age
    A J Price
    Nuffield Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 87:1488-92. 2005
    ..We conclude that for patients aged over 50, age should not be considered a contraindication for this procedure...
  79. ncbi request reprint Changes in femur stress after hip resurfacing arthroplasty: response to physiological loads
    J P Little
    OOEC Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK
    Clin Biomech (Bristol, Avon) 22:440-8. 2007
    ..Hip resurfacing arthroplasty is reported to preserve the normal joint mechanics. However, there is concern, in the short term, due to frequent occurrence of femoral neck fractures...
  80. ncbi request reprint In vivo measurement of total knee replacement wear
    C F Kellett
    Nuffield Department of Orthopaedic Surgery, University of Oxford, Nuffield Orthopaedic Centre, Headington, Oxford OX3 7LD, UK
    Knee 11:183-7. 2004
    ..The current system is accurate enough to measure wear at 5 years post TKR. It has the potential for predicting long-term wear problems with new designs of TKR and new materials within 2 years...
  81. ncbi request reprint Does arthroplasty type influence knee joint proprioception? A longitudinal prospective study comparing total and unicompartmental arthroplasty
    S M Isaac
    Oxford Orthopaedic Engineering Centre, Nuffield Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre, Oxford OX3 7LD, UK
    Knee 14:212-7. 2007
    ..Dynamic aspects of proprioception improve more after UKA than TKA, which may explain, in part, why UKA patients have superior functional outcome to that of TKA patients...
  82. doi request reprint The trainer, the trainee and the surgeons' assistant: clinical outcomes following total hip replacement
    J Palan
    Botnar Research Centre, Nuffield Department of Orthopaedic Surgery, University of Oxford, Oxford OX3 7LD, UK
    J Bone Joint Surg Br 91:928-34. 2009
    ..This study provides evidence that total hip replacements can be performed safely and effectively by appropriately trained surgeons in training, and that there are potential benefits of using surgeons' assistants in orthopaedic surgery...
  83. doi request reprint Intra-articular local anaesthetic on the day after surgery improves pain and patient satisfaction after Unicompartmental Knee Replacement: a randomised controlled trial
    J S Weston-Simons
    Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Headington, Oxford, UK
    Knee 19:352-5. 2012
    ..001) in the local anaesthetic group. We conclude that a bolus dose of intra-articular bupivacaine early on the day after surgery dramatically improves pain control after UKR and improves patient satisfaction...
  84. pmc The influence of cement viscosity on the early migration of a tapered polished femoral stem
    S Glyn-Jones
    Oxford Orthopaedic Engineering Centre, Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford, OX3 7LD, UK
    Int Orthop 27:362-5. 2003
    ..For a polished, tapered implant that is designed to subside, cement viscosity does not influence the 1-year migration, and it is therefore unlikely to affect long-term outcome...
  85. doi request reprint What is a good patient reported outcome after total hip replacement?
    N K Arden
    Oxford NIHR Musculoskeletal Biomedical Research Unit, University of Oxford, Windmill Road, Headington, Oxford OX3 7LD, UK
    Osteoarthritis Cartilage 19:155-62. 2011
    ..It is currently unclear how to use this information to determine outcome following surgery. The aim of this study was to define a threshold for the OHS that is correlated with patient satisfaction...