A A Amis

Summary

Affiliation: Imperial College
Country: UK

Publications

  1. ncbi request reprint Bone adaptation to a polyester fiber anterior cruciate ligament replacement
    A A Amis
    Mechanical Engineering Department, Imperial College, London, England
    J Long Term Eff Med Implants 9:153-68. 1999
  2. ncbi request reprint Anatomy and biomechanics of the medial patellofemoral ligament
    A A Amis
    Mechanical Engineering Department, Biomechanics Section, Exhibition Road, London, SW7 2BX, UK
    Knee 10:215-20. 2003
  3. ncbi request reprint Biomechanics of the PCL and related structures: posterolateral, posteromedial and meniscofemoral ligaments
    A A Amis
    Biomechanics Section, Mechanical Engineering Department, Imperial College, London, SW7 2AZ, UK
    Knee Surg Sports Traumatol Arthrosc 11:271-81. 2003
  4. ncbi request reprint A comparative study of 'isometric' points for anterior cruciate ligament graft attachment
    T D Zavras
    Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London, UK
    Knee Surg Sports Traumatol Arthrosc 9:28-33. 2001
  5. ncbi request reprint Anatomic and biomechanical study of the lateral collateral and popliteofibular ligaments
    T Sugita
    Mechanical Engineering Department, Imperial College, London, England
    Am J Sports Med 29:466-72. 2001
  6. ncbi request reprint Intraoperative measurement of knee kinematics in reconstruction of the anterior cruciate ligament
    A M J Bull
    Department of Bioengineering, Imperial College of Science, Technology and Medicine, London, England, UK
    J Bone Joint Surg Br 84:1075-81. 2002
  7. ncbi request reprint Failure mechanisms of polyester fiber anterior cruciate ligament implants: A human retrieval and laboratory study
    A A Amis
    Biomechanics Section, Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London SW7 2BX, England
    J Biomed Mater Res 48:534-9. 1999
  8. ncbi request reprint Tensile strength of the medial patellofemoral ligament before and after repair or reconstruction
    J Mountney
    North Hampshire Hospital, Basingstoke, England, UK
    J Bone Joint Surg Br 87:36-40. 2005
  9. ncbi request reprint The effect of screw length and position on fixation of four-stranded hamstring grafts for anterior cruciate ligament reconstruction
    A R Harvey
    Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London SW7 2BX, UK
    Knee 10:97-102. 2003
  10. ncbi request reprint Measurement of laxity in the anterior cruciate ligament-deficient knee: a comparison of three different methods in vitro
    R T Khan
    Musculoskeletal Surgery, Imperial College London, London, UK
    Proc Inst Mech Eng H 221:653-63. 2007

Collaborators

Detail Information

Publications46

  1. ncbi request reprint Bone adaptation to a polyester fiber anterior cruciate ligament replacement
    A A Amis
    Mechanical Engineering Department, Imperial College, London, England
    J Long Term Eff Med Implants 9:153-68. 1999
    ..There was no evidence of bone ingrowth in the human implants. It was hypothesized that-tunnel enlargement resulted from fretting at the implant-tissue interface in response to cyclic loads in use...
  2. ncbi request reprint Anatomy and biomechanics of the medial patellofemoral ligament
    A A Amis
    Mechanical Engineering Department, Biomechanics Section, Exhibition Road, London, SW7 2BX, UK
    Knee 10:215-20. 2003
    ..The contribution of the MPFL to resisting patellar lateral subluxation was greatest in the extended knee. This finding was linked to the retinaculae being tightest in full knee extension, and slackening with flexion...
  3. ncbi request reprint Biomechanics of the PCL and related structures: posterolateral, posteromedial and meniscofemoral ligaments
    A A Amis
    Biomechanics Section, Mechanical Engineering Department, Imperial College, London, SW7 2AZ, UK
    Knee Surg Sports Traumatol Arthrosc 11:271-81. 2003
    ..are responsible for posterior knee stability near extension, and this, along with the action of the meniscofemoral ligaments, may explain why an isolated rupture of the posterior cruciate ligament does not often lead to knee instability..
  4. ncbi request reprint A comparative study of 'isometric' points for anterior cruciate ligament graft attachment
    T D Zavras
    Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London, UK
    Knee Surg Sports Traumatol Arthrosc 9:28-33. 2001
    ..This study confirms the existence of an isometric zone close to the posterior end of Blumensaat's line under several loading conditions. Other graft attachment points are less suitable for ACL reconstruction...
  5. ncbi request reprint Anatomic and biomechanical study of the lateral collateral and popliteofibular ligaments
    T Sugita
    Mechanical Engineering Department, Imperial College, London, England
    Am J Sports Med 29:466-72. 2001
    ..The anatomic variation causes some knees to have better ligament orientations to withstand posterolateral tibial displacements and, conversely, other knees may be inherently more difficult to stabilize by reconstruction...
  6. ncbi request reprint Intraoperative measurement of knee kinematics in reconstruction of the anterior cruciate ligament
    A M J Bull
    Department of Bioengineering, Imperial College of Science, Technology and Medicine, London, England, UK
    J Bone Joint Surg Br 84:1075-81. 2002
    ..This abnormal movement was abolished after reconstruction of the ACL...
  7. ncbi request reprint Failure mechanisms of polyester fiber anterior cruciate ligament implants: A human retrieval and laboratory study
    A A Amis
    Biomechanics Section, Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London SW7 2BX, England
    J Biomed Mater Res 48:534-9. 1999
    ..Cadaver joints were run in a knee simulator, with deliberately impinging ACL implants. SEM examination of implants abraded in the knee in vitro showed identical fiber damage patterns, thus confirming the impingement hypothesis...
  8. ncbi request reprint Tensile strength of the medial patellofemoral ligament before and after repair or reconstruction
    J Mountney
    North Hampshire Hospital, Basingstoke, England, UK
    J Bone Joint Surg Br 87:36-40. 2005
    ..The last was not significantly weaker than the MPFL itself...
  9. ncbi request reprint The effect of screw length and position on fixation of four-stranded hamstring grafts for anterior cruciate ligament reconstruction
    A R Harvey
    Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London SW7 2BX, UK
    Knee 10:97-102. 2003
    ..Cyclical load testing reflects the repetitive forces imposed in the early post-operative period following hamstring anterior cruciate ligament reconstruction and is important for the evaluation of graft fixations...
  10. ncbi request reprint Measurement of laxity in the anterior cruciate ligament-deficient knee: a comparison of three different methods in vitro
    R T Khan
    Musculoskeletal Surgery, Imperial College London, London, UK
    Proc Inst Mech Eng H 221:653-63. 2007
    ..These findings may be helpful in the future comparison of different studies...
  11. ncbi request reprint Anatomy of the posterior cruciate ligament and the meniscofemoral ligaments
    A A Amis
    Biomechanics Section, Department of Mechanical Engineering, Imperial College London, Room 638 Mechanical Engineering Building, UK
    Knee Surg Sports Traumatol Arthrosc 14:257-63. 2006
    ..They both attach distally to the posterior horn of the lateral meniscus. Their slanting orientation allows the MFLs to resist tibial posterior drawer...
  12. doi request reprint The effect of trochleoplasty on patellar stability and kinematics: a biomechanical study in vitro
    A A Amis
    Department of Mechanical Engineering, Imperial College London, London, England
    J Bone Joint Surg Br 90:864-9. 2008
    ..001). This study has provided objective biomechanical data to support the use of trochleoplasty in the treatment of patellar instability associated with femoral trochlear dysplasia...
  13. ncbi request reprint The effects of articular, retinacular, or muscular deficiencies on patellofemoral joint stability: a biomechanical study in vitro
    W Senavongse
    Biomechanics Section, Mechanical Engineering Department, Room 638 Mechanical Engineering Building, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
    J Bone Joint Surg Br 87:577-82. 2005
    ..There was no effect on medial stability. There is a complex interaction between these structures, with their contributions to loss of lateral patellar stability varying with knee flexion...
  14. ncbi request reprint A technique for the measurement of patellar tracking during weight-bearing activities using ultrasound
    Yi Fen Shih
    Department of Mechanical Engineering, Imperial College London, London, UK
    Proc Inst Mech Eng H 217:449-57. 2003
    ..4 +/- 3.2 mm. Although further research is needed to improve the accuracy and reliability of this method, it has demonstrated the feasibility of obtaining patellar tracking data during load-bearing activities...
  15. ncbi request reprint Coracoacromial ligament tension in vivo
    A F W Chambler
    Department of Orthopaedics, St Mary s Hospital, London, UK
    J Shoulder Elbow Surg 12:365-7. 2003
    ..9 N; range, 3.7-22 N) and highest in abduction (mean, 15.7 N; range, 6.5-38 N). This study confirms CA ligament tension in vivo as a possible stimulus for acromial spur formation...
  16. ncbi request reprint Quantitative measurement of patellofemoral joint stability: force-displacement behavior of the human patella in vitro
    W Senavongse
    Biomechanics Section, Mechanical Engineering Department, Imperial College, Exhibition Road, London, SW7 2AZ, UK
    J Orthop Res 21:780-6. 2003
    ..Our finding that lateral patellar displacement occurred at the lowest restraining force when the knee was flexed 20 degrees agrees with clinical experience of patellar instability...
  17. ncbi request reprint A new type of flexor tendon repair. Biomechanical evaluation by cyclic loading, ultimate strength and assessment of pulley friction in vitro
    R J Williams
    Department of Mechanical Engineering, Imperial College of Science, Technology and Medicine, London, UK
    J Hand Surg Br 20:578-83. 1995
    ..We concluded that the DBPS plus Kessler-type core stitch will survive active mobilization better than the Kleinert method...
  18. ncbi request reprint An anatomical study of meniscal allograft sizing
    I D McDermott
    Department of Biomechanics, Imperial College of Science, Technology and Medicine, Exhibition Road, London, UK
    Knee Surg Sports Traumatol Arthrosc 12:130-5. 2004
    ..However, potential size mismatches should be carefully borne in mind by surgeons using meniscal allografts...
  19. doi request reprint Biomechanics of the meniscus-meniscal ligament construct of the knee
    S D Masouros
    Department of Bioengineering, Imperial College London, Room 431 RSM Building, South Kensington Campus, London, SW7 2AZ, UK
    Knee Surg Sports Traumatol Arthrosc 16:1121-32. 2008
    ....
  20. ncbi request reprint Meniscofemoral ligaments revisited. Anatomical study, age correlation and clinical implications
    C M Gupte
    Department of Mechanical Engineering, Imperial College, University of London, England, UK
    J Bone Joint Surg Br 84:846-51. 2002
    ..The increased incidence of MFLs in younger donors suggests that they degenerate with age...
  21. ncbi request reprint Standardisation of the description of patellofemoral motion and comparison between different techniques
    A M J Bull
    Department of Bioengineering, Imperial College, London SW7 2BX, UK
    Knee Surg Sports Traumatol Arthrosc 10:184-93. 2002
    ....
  22. doi request reprint Measurement of migration of soft tissue by modified Roentgen stereophotogrammetric analysis (RSA): validation of a new technique to monitor rotator cuff tears
    P M M Cashman
    Department of Bioengineering, Imperial College London, London, UK
    J Med Eng Technol 34:159-65. 2010
    ..This novel application of RSA to measure soft tissue migration is practicable and can be extended to in vivo studies...
  23. doi request reprint A biomechanical basis for tears of the human acetabular labrum
    C D Smith
    Department of Bioengineering, Imperial College London, Royal School of Mines, South Kensington Campus, London, UK
    Br J Sports Med 43:574-8. 2009
    ..A further cause could be reduced biomechanical properties in the area most susceptible to tears. However, no work has defined these properties...
  24. ncbi request reprint The anatomy of the patellar tendon
    O Basso
    Orthopaedic Biomechanics, Department of Mechanical Engineering, Imperial College, London, UK
    Knee Surg Sports Traumatol Arthrosc 9:2-5. 2001
    ..When harvesting B-PT-B, the oblique orientation of the fibres in the coronal plane must be borne in mind...
  25. ncbi request reprint A biomechanical study of four different meniscal repair systems, comparing pull-out strengths and gapping under cyclic loading
    I D McDermott
    Department of Biomechanics, Imperial College of Science, Technology and Medicine, London, UK
    Knee Surg Sports Traumatol Arthrosc 11:23-9. 2003
    ..These results confirm that meniscal repair by suturing gives the highest load to failure, but show that Arrows give superior hold under lower loads, with the least gapping across repairs under cyclic loading of the four methods tested...
  26. ncbi request reprint The posteromedial corner revisited. An anatomical description of the passive restraining structures of the medial aspect of the human knee
    J R Robinson
    Imperial College, London, England
    J Bone Joint Surg Br 86:674-81. 2004
    ..The information would serve as the basis for future biomechanical studies to investigate the contribution of the posteromedial structures to joint stability...
  27. doi request reprint The anterolateral ligament: Anatomy, length changes and association with the Segond fracture
    A L Dodds
    Imperial College London, Biomechanics Group, Mechanical Engineering Department, London SW7 2AZ, UK
    Bone Joint J 96:325-31. 2014
    ....
  28. ncbi request reprint Knee joint motion: description and measurement
    A M Bull
    Biomechanics Section, Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London
    Proc Inst Mech Eng H 212:357-72. 1998
    ..This is necessary for clinical application and to facilitate communication between the clinician and the engineer...
  29. ncbi request reprint Mechanical factors in the initiation and propagation of tears of the rotator cuff. Quantification of strains of the supraspinatus tendon in vitro
    P Reilly
    Department of Mechanical Engineering, Imperial College of Science, Technology and Medicine, London, England, UK
    J Bone Joint Surg Br 85:594-9. 2003
    ..Differential strain causes shearing between the layers of the supraspinatus tendon, which may contribute to the propagation of intratendinous defects that are initiated by high joint side strains...
  30. ncbi request reprint The palmar locking compression plate is biomechanically comparable to the dorsal pi plate for dorsally comminuted, intraarticular wrist fractures
    A J Hart
    Department of Trauma and Orthopaedic Surgery, Charing Cross Hospital, London, UK
    J Hand Surg Eur Vol 32:388-93. 2007
    ..036). However, the absolute difference was only 0.5 mm. Such a small difference is unlikely to be clinically detectable and, therefore, we conclude that there is no clinically significant difference between the two types of fixation...
  31. ncbi request reprint Accuracy of an electromagnetic measurement device and application to the measurement and description of knee joint motion
    A M Bull
    Biomechanics Section, Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London
    Proc Inst Mech Eng H 212:347-55. 1998
    ..The device is a useful tool for measuring joint motion in the operating theatre and laboratory, owing to its accuracy and insensitivity to surgical alloys...
  32. ncbi request reprint Rapid prototyping for orthopaedic surgery
    P Potamianos
    Biomechanics Section, Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London
    Proc Inst Mech Eng H 212:383-93. 1998
    ..The model provided a definitive interpretation of joint pathology and enabled a full assessment of the degree of injury...
  33. pmc Periprosthetic bone mineral density changes with femoral components of differing design philosophy
    C E Gibbons
    Chelsea and Westminster Hospital, London, UK
    Int Orthop 25:89-92. 2001
    ..05) and 7 (P<0.01). Although numerous factors affect BMD changes around cementless implants, this study suggests that less bone loss can be associated with the titanium CLS stem...
  34. ncbi request reprint No difference in patellar tracking between symmetrical and asymmetrical femoral component designs in TKA
    J E Stoddard
    Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ, UK
    Knee Surg Sports Traumatol Arthrosc 22:534-42. 2014
    ..This study in vitro tested the hypothesis that a modern asymmetrical prosthesis would restore patellar tracking and stability to more natural behaviour than an older symmetrical prosthesis...
  35. ncbi request reprint Fixation of the graft in reconstruction of the anterior cruciate ligament
    A Harvey
    Royal Bournemouth Hospital, Castle Lane, Bournemouth BH7 7DW, UK
    J Bone Joint Surg Br 87:593-603. 2005
  36. ncbi request reprint The role of PCL reconstruction in knees with combined PCL and posterolateral corner deficiency
    S Apsingi
    Freeman Hospital, Newcastle, NE7 7DN, UK
    Knee Surg Sports Traumatol Arthrosc 16:104-11. 2008
    ..Double-bundle PCL reconstruction was not better than single-bundle, so the added complexity of double-bundle reconstruction does not seem to be justified by these results...
  37. ncbi request reprint Effects of lateral retinacular release on the lateral stability of the patella
    J Christoforakis
    Creta Interclinic Hospital, University Hospital of Heraklion, Crete, Greece
    Knee Surg Sports Traumatol Arthrosc 14:273-7. 2006
    ..These findings suggest that lateral retinacular release may not be appropriate in treatment of patellar lateral instability...
  38. ncbi request reprint Comparative anatomy of the meniscofemoral ligament in humans and some domestic mammals
    C M Gupte
    Biomechanics Section, Department of Bioengineering, Imperial College London, South Kensington Campus, London SW7 2AZ
    Anat Histol Embryol 36:47-52. 2007
    ..It is known to resist caudal translation of the tibia in conjunction with the lateral meniscus. This must be borne in mind when considering its function in the human knee...
  39. ncbi request reprint The consequences of meniscectomy
    I D McDermott
    Brunel University of Sport and Education, The Northwood Orthopaedic Clinic, c o Bishops Wood Hospital, Rickmansworth Road, Northwood, Middlesex, UK
    J Bone Joint Surg Br 88:1549-56. 2006
    ..This paper reviews the consequences of meniscectomy and summarises the body of evidence in the literature regarding those factors most relevant to long-term outcome...
  40. ncbi request reprint Primary nerve repair: strength of repair with different gauges of nylon suture material
    G E Giddins
    St Thomas s Hospital, London
    J Hand Surg Br 14:301-2. 1989
    ..3 metric) sutures were preferable: gap formation at the repair site occurred at the highest force. Finer gauge (10/0) sutures snapped at a lower force, while thicker (8/0) sutures were less consistent and pulled out of the nerve tissue...
  41. ncbi request reprint The function of bipolar hip prostheses--a laboratory study using cadaveric acetabula
    R G Wetherell
    Rayne Institute, St Thomas Hospital, London
    Proc Inst Mech Eng H 206:37-42. 1992
    ..In several cases this acetabular friction was found to be less than the friction in the inner articulation of the Hastings bipolar hip prosthesis, and this may explain some cases of reported failure of biarticular function...
  42. ncbi request reprint Variation of holding strength of synthetic absorbable flexor tendon sutures with time
    Z B Mashadi
    Imperial College of Science, Technology and Medicine, London
    J Hand Surg Br 17:278-81. 1992
    ..Mechanical testing showed that the suture kept its strength long enough to unite tendon ends. However, high tissue reactivity of polytrimethylene carbonate during its dissolution caused adhesions...
  43. ncbi request reprint The effect of locking loops on the strength of tendon repair
    Z B Mashadi
    Imperial College of Science, Technology and Medicine, London
    J Hand Surg Br 16:35-9. 1991
    ....
  44. doi request reprint Anatomy of the lateral retinaculum of the knee
    A M Merican
    Department of Orthopaedic Surgery, University of Malaya Medical Center, 59100 Kuala Lumpur, Malaysia
    J Bone Joint Surg Br 90:527-34. 2008
    ....
  45. pmc Tensile properties of the human glenoid labrum
    C D Smith
    Department of Bioengineering, and Department of Mechanical Engineering, Imperial College London, UK
    J Anat 212:49-54. 2008
    ..The glenoid labrum has similar tensile material properties to articular cartilage. Its elastic modulus varies around its circumference. This suggests that the labrum may encounter different forces at different positions...
  46. ncbi request reprint Flexor tendon repair: significant gain in strength from the Halsted peripheral suture technique
    P J Wade
    St Thomas s Hospital, London
    J Hand Surg Br 14:232-5. 1989
    ..This increase was due to the technique; it did not depend on the suture material used. The bulk of the tendon repair was not significantly greater with the Halsted modification...