Research Topics
| M D RiesSummaryAffiliation: University of California Country: USA Publications
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Detail Information
Publications
Primary arthroplasty for management of osteoporotic fractures about the kneeMichael D Ries
Department of Orthopaedic Surgery, University of California, San Francisco, 94143, USA
Curr Osteoporos Rep 10:322-7. 2012....
Does a cemented cage improve revision THA for severe acetabular defects?Erik Hansen
Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Avenue, MU 320 W, San Francisco, CA 94143, USA
Clin Orthop Relat Res 469:494-502. 2011..Evidence suggests a growing incidence of revision total hip arthroplasty (THA) including a subset with large acetabular defects. Revision THA for severe acetabular bone loss is associated with a relatively high rate of mechanical failure...
Soft-tissue balance in revision total knee arthroplasty. Surgical techniqueMichael D Ries
Department of Orthopaedic Surgery, University of California at San Francisco, 500 Parnassus Avenue (MU 320-W, San Francisco, CA 94143, USA
J Bone Joint Surg Am 86:81-6. 2004- Dissociation of an ultra-high molecular weight polyethylene insert from the tibial baseplate after total knee arthroplasty. A case reportMichael D Ries
Department of Orthopaedic Surgery, University of California at San Francisco, 500 Parnassus Avenue, MU-320 West, San Francisco, CA 94143-0728, USA
J Bone Joint Surg Am 86:1522-4. 2004 - Porous tantalum patellar augmentation: the importance of residual bone stockMichael D Ries
Department of Orthopaedic Surgery, University of California, San Francisco, CA 94143, USA
Clin Orthop Relat Res 452:166-70. 2006..Our results suggest stable fixation of a trabecular metal patellar component can be achieved when residual bone is present for implant fixation, but early loosening is likely to occur when soft tissue is used for fixation to the implant... - Soft-tissue balance in revision total knee arthroplastyMichael D Ries
Department of Orthopaedic Surgery, University of California at San Francisco, 94143, USA
J Bone Joint Surg Am 85:S38-42. 2003 - Medial gastrocnemius flap coverage for treatment of skin necrosis after total knee arthroplastyMichael D Ries
Department of Orthopaedic Surgery, University of California, San Francisco, CA 94143 0728, USA
Clin Orthop Relat Res 446:186-92. 2006..Level of Evidence: Therapeutic study, level IV (case series). See Author Guidelines for a complete description of levels of evidence... - Skin necrosis after total knee arthroplastyMichael D Ries
Department of Orthopaedic Surgery, University of California San Francisco, San Francisco, California 94143 0728, USA
J Arthroplasty 17:74-7. 2002..Treatment of necrosis over the patellar tendon or tibial tubercle usually requires muscle flap coverage, whereas necrosis over the patella may be treated with local wound care and skin grafting... - Effect of cross-linking on the microstructure and mechanical properties of ultra-high molecular weight polyethyleneMichael D Ries
Department of Orthopaedic Surgery, University of California San Francisco, San Francisco, CA 94143, USA
Clin Orthop Relat Res 440:149-56. 2005.... - Association between human immunodeficiency virus and osteonecrosis of the femoral headMichael D Ries
Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California 94143, USA
J Arthroplasty 17:135-9. 2002..The difference between the groups was statistically significant, suggesting that HIV infection is a risk factor for the development of osteonecrosis of the femoral head... - Vancomycin-resistant Enterococcus infected total knee arthroplastyM D Ries
Department of Orthopaedic Surgery, University of California, San Francisco 94143 0728, USA
J Arthroplasty 16:802-5. 2001..Both patients required multiple procedures. The infections were controlled with serial open débridements. One knee was fused successfully, and the other was managed with resection arthroplasty... - Relationship between gravimetric wear and particle generation in hip simulators: conventional compared with cross-linked polyethyleneM D Ries
Department of Orthopaedic Surgery, University of California, San Francisco, 94143, USA
J Bone Joint Surg Am 83:116-22. 2001.... - Infection after total joint arthroplasty in patients with human immunodeficiency virus or intravenous drug useC R Lehman
Department of Orthopaedics, University of California, San Francisco, California 94143, USA
J Arthroplasty 16:330-5. 2001..The decision to proceed with TJA in HIV-positive and IVDU patients should be made only after weighing the ratio of risks and benefits... - Comparison of cemented and uncemented fixation in total hip replacement: a meta-analysisSaam Morshed
Department of Orthopaedic Surgery, School of Medicine, University of California San Francisco, San Francisco, CA 94143, USA
Acta Orthop 78:315-26. 2007..The choice of optimal implant fixation in total hip replacement (THR)--fixation with or without cement--has been the subject of much debate... - Clinical impact of obesity on stability following revision total hip arthroplastyYoujeong Kim
Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, CA 94143, USA
Clin Orthop Relat Res 453:142-6. 2006..Obese patients should be counseled about the increased risk of dislocation that can occur after revision THA... - Revision total hip arthroplasty for large medial (protrusio) defects with a rim-fit cementless acetabular componentErik Hansen
Department of Orthopaedic Surgery, University of California, San Francisco, CA 94143, USA
J Arthroplasty 21:72-9. 2006..The average cup position preoperatively was 10.5 mm medial to Köhler's line and postoperatively was 6.8 mm lateral to Köhler's line. Despite very large medial defects, reconstructions with this technique remained stable... - Whole patellar allograft for total knee arthroplasty after previous patellectomyBenjamin T Busfield
Department of Orthopaedic Surgery, University of California-San Francisco, 500 Parnassus Avenue, San Francisco, CA 94143, USA
Clin Orthop Relat Res 450:145-9. 2006..Patellar allografting improved quadriceps function by restoring patellar height. However, a high risk of allograft complications can occur with this procedure. LEVEL OF EVIDENCE: Therapeutic study, Level IV (case series)... - The ball and socket articulating spacer for infected total knee arthroplastyMichael C MacAvoy
Department of Orthopaedic Surgery, University of California at San Francisco, San Francisco, California 94143, USA
J Arthroplasty 20:757-62. 2005..At an average follow-up of 28 months after reimplantation, average knee flexion was 98 degrees ... - MR imaging findings in the follow-up of patients with different stages of knee osteoarthritis and the correlation with clinical symptomsCatherine M Phan
Department of Radiology, University of California San Francisco, 185 Berry Street, Suite 350, Box 0628, San Francisco, CA 94143 0946, USA
Eur Radiol 16:608-18. 2006..5-T MRI in patients with knee osteoarthritis and to correlate these findings with the clinical Western Ontario and McMaster University Osteoarthitis (WOMAC) score... - Osteolysis caused by tibial component debonding in total knee arthroplastyKevin Cheng
Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA
Clin Orthop Relat Res 443:333-6. 2006..Although this failure mechanism has been well recognized in cemented total hip arthroplasties, it has not been reported to be a substantial cause of failure in total knee arthroplasties... - Intramedullary step-cut osteotomy for revision total hip arthroplasty with allograft-host bone size mismatchChad E Maclachlan
Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA
J Arthroplasty 22:657-62. 2007..The osteotomy also provides a large surface area of contact between the allograft and host bone... - Effect of femoral head size and abductors on dislocation after revision THAPeter L Kung
Department of Orthopaedic Surgery, University of California San Francisco, San Francisco, CA 94143, USA
Clin Orthop Relat Res 465:170-4. 2007..7% for Group 1, 40.0% for Group 2, 0% for Group 3, and 33.3% for Group 4. However, the use of a large-diameter head does not reduce the rate of dislocation if the abductor mechanism is absent... - What patient and surgical factors contribute to implant wear and osteolysis in total joint arthroplasty?Audrey K Tsao
Johns Hopkins University School of Medicine, Baltimore, MD, USA
J Am Acad Orthop Surg 16:S7-13. 2008..Although these categories are interrelated and not mutually exclusive, they enable us to build a framework in which to further advance our understanding of osteolysis and apply this information in a clinically relevant manner... - How have alternative bearings (such as metal-on-metal, highly cross-linked polyethylene, and ceramic-on-ceramic) affected the prevention and treatment of osteolysis?John J Callaghan
University of Iowa, Veterans Affairs Medical Center, Iowa City, IA, USA
J Am Acad Orthop Surg 16:S33-8. 2008..However, long-term data are presently unavailable; the future performance of these bearings awaits clinical validation... - What is the outcome of treatment for osteolysis?William Maloney
Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
J Am Acad Orthop Surg 16:S26-32. 2008..In general, patient age and activity level, the location and size of the osteolytic defect, and the clinical record of the implant system will dictate treatment choices... - What are the guidelines for the surgical and nonsurgical treatment of periprosthetic osteolysis?Bernard N Stulberg
Center for Joint Reconstruction, Cleveland Orthopaedic and Spine Hospital at Lutheran, Cleveland Clinic Health System, Cleveland, OH, USA
J Am Acad Orthop Surg 16:S20-5. 2008..A standardized follow-up evaluation mechanism for all patients should be a part of total joint arthroplasty management... - How are wear-related problems diagnosed and what forms of surveillance are necessary?Henrik Malchau
Harvard Medical School, The Harris Orthopaedic Biomechanics and Biomaterials Laboratory, Adult Reconstructive Unit, Department of Orthopedics, Massachusetts General Hospital, Boston, MA, USA
J Am Acad Orthop Surg 16:S14-9. 2008..MRI can more accurately localize both osseous and soft-tissue particulate disease, and detect granuloma and compression on adjacent nerves and vessels... - How prevalent are implant wear and osteolysis, and how has the scope of osteolysis changed since 2000?Amanda Marshall
University of Texas Health Science Center, San Antonio, TX, USA
J Am Acad Orthop Surg 16:S1-6. 2008.... - Feasibility and reproducibility of relaxometry, morphometric, and geometrical measurements of the hip joint with magnetic resonance imaging at 3TJulio Carballido-Gamio
Department of Radiology, University of California San Francisco, 1700 4th Street, San Francisco, CA 94158, USA
J Magn Reson Imaging 28:227-35. 2008..To test the feasibility of in vivo magnetic resonance T(1rho) relaxation time measurements of hip cartilage, and quantify the reproducibility of hip cartilage thickness, volume, T(2), T(1rho), and size of femoral head measurements... - Extensor mechanism complications after total knee arthroplastyJay Patel
Department of Orthopaedic Surgery, University of California, Irvine, Orange, California, USA
Instr Course Lect 57:283-94. 2008.... - Midterm comparison of posterior cruciate-retaining versus -substituting total knee arthroplasty using the Genesis II prosthesis. A multicenter prospective randomized clinical trialKengo Harato
Division of Orthopaedic Surgery, London Health Sciences Centre, University of Western Ontario, London, ON, Canada
Knee 15:217-21. 2008.... - Aspherical femoral head with highly cross-linked ultra-high molecular weight polyethylene surface cracking. A case reportJevan Furmanski
Department of Mechanical Engineering, University of California, Berkeley, 2121 Etcheverry Hall, Berkeley, CA 94720, USA
J Bone Joint Surg Am 89:2266-70. 2007 - The impact of infection after total hip arthroplasty on hospital and surgeon resource utilizationKevin J Bozic
Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Avenue, MU 320W, San Francisco, California 94143 0728, USA
J Bone Joint Surg Am 87:1746-51. 2005.... - In vivo behavior of acrylic bone cement in total hip arthroplastyMichael D Ries
University of California, 500 Parnassus Avenue (MU-320-W, San Francisco, CA 94143, USA
Biomaterials 27:256-61. 2006..This implies that porosity is the most important factor in the mechanical behavior of bone cement during in vivo use... - Highly cross-linked polyethylene: the debate is over--in oppositionMichael D Ries
Department of Orthopaedic Surgery, University of California-San Francisco, 500 Parnassus Avenue, MU320W, San Francisco, CA 94143, USA
J Arthroplasty 20:59-62. 2005..Although the in vitro and in vivo studies provide compelling evidence that highly cross-linked polyethylene may improve the longevity of total hip arthroplasty, it does not appear to offer similar benefits for total knee arthroplasty... - Septic arthritis of the hip and intrapelvic abscess following intra-articular injection of hylan G-F 20. A case reportSaam Morshed
Department of Orthopaedic Surgery, University of California at San Francisco, 500 Parnassus Avenue (MU 320-W, San Francisco, CA 94143, USA
J Bone Joint Surg Am 86:823-6. 2004 - Effect of cementless bowed stem distal surface contour and coronal slot on femoral bone strains and torsional stabilityMichael D Ries
Department of Orthopaedic Surgery, University of California, San Francisco, California 94143-0728, USA
J Arthroplasty 18:494-8. 2003..Our data demonstrate that a long bowed cementless stem with a distal coronal slot and flutes is associated with decreased bone strains and fracture risk during stem insertion compared to a fully porous-coated stem... - Structural degradation of acrylic bone cements due to in vivo and simulated agingKerry F Hughes
Department of Mechanical Engineering, University of California, Berkeley, CA, USA
J Biomed Mater Res A 65:126-35. 2003..The findings from this investigation have broad applicability to acrylic-based cements and may provide guidance for the development of new bone cements that resist degradation in the body... - Combined vertical and horizontal cable fixation of an extended trochanteric osteotomy siteG Russell Huffman
Department of Orthopaedic Surgery, University of California at San Francisco, 94143, USA
J Bone Joint Surg Am 85:273-7. 2003..Despite occasional intraoperative fracture at the osteotomy site, combined vertical trochanteric and horizontal metaphyseal cable fixation resulted in an excellent rate of healing and implant stability... - Intraoperative assessment in revision total knee arthroplastyJames A Rand
Department of Orthopaedics, Mayo Clinic Scottsdale, AZ 85259, USA
J Bone Joint Surg Am 85:S26-37. 2003 - Polyethylene wear performance of oxidized zirconium and cobalt-chromium knee components under abrasive conditionsMichael D Ries
Department of Orthopaedic Surgery, University of California, San Francisco, 94143, USA
J Bone Joint Surg Am 84:129-35. 2002 - Treatment of an intraoperative patellar fracture during revision total knee arthroplastyJill J Gelinas
Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California 94143, USA
J Arthroplasty 17:1066-9. 2002..The fracture was treated successfully with cerclage wire fixation and implantation of a cemented patellar component... - Total knee arthroplasty in hemophilic arthropathyJohn M Norian
University of California, San Francisco, San Francisco, CA 94143, USA
J Bone Joint Surg Am 84:1138-41. 2002.... - Patella infera after nonoperative treatment of a patellar fracture. A case reportSaam Morshed
University of California, San Francisco, School of Medicine, 94122, USA
J Bone Joint Surg Am 84:1018-21. 2002 - Impact biomechanics and pelvic deformation during insertion of press-fit acetabular cupsMarkus Kroeber
Department of Orthopaedic Surgery, University of California, San Francisco, California 94143, USA
J Arthroplasty 17:349-54. 2002..This finding implies that an accurate assessment of cup seating cannot be inferred by surgeon proprioception during impaction, and use of an apical hole in the cup is necessary to determine when the cup has seated... - Retrieved glenoid components: a classification system for surface damage analysisStephen B Gunther
Department of Orthopaedic Surgery, University of California, San Francisco 94143, USA
J Arthroplasty 17:95-100. 2002..These data show a combination of abrasive wear and fatigue in retrieved total shoulder specimens. Surface wear and subsurface fatigue failure mechanisms both contribute to glenoid implant failure... - Early failure due to osteolysis associated with contemporary highly cross-linked ultra-high molecular weight polyethylene. A case reportLetitia Bradford
Department of Mechanical Engineering-Bioengineering, University of California at Berkeley, Berkeley, CA 94720, USA
J Bone Joint Surg Am 86:1051-6. 2004 - Wear and surface cracking in early retrieved highly cross-linked polyethylene acetabular linersLetitia Bradford
Department of Mechanical Engineering Bioengineering, University of California, Berkeley, Berkeley, California 94720, USA
J Bone Joint Surg Am 86:1271-82. 2004..We investigated in vivo wear mechanisms in retrieved highly cross-linked polyethylene acetabular liners in order to determine if early in vivo wear behavior is accurately predicted by hip-simulator studies... - Enhanced polyethylene implants: have we been there before?Michael D Ries
Department of Orthopaedic Surgery, University of California at San Francisco, USA
Instr Course Lect 54:189-92. 2005..Although early clinical results with highly cross-linked UHMWPE are favorable, longer follow-up will be necessary to determine whether the results of in vitro testing accurately reflect long-term in vivo behavior... - Extended trochanteric osteotomy for 2-stage revision of infected total hip arthroplastySaam Morshed
Department of Orthopaedic Surgery, University of California San Francisco, California 94143, USA
J Arthroplasty 20:294-301. 2005..Extended trochanteric osteotomy with interval placement of an articulating antibiotic-impregnated cement spacer and delayed osteotomy fixation permits reliable healing of the osteotomy... - Hospital resource utilization for primary and revision total hip arthroplastyKevin J Bozic
Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Avenue, MU 320W, San Francisco, CA 94143 0728, USA
J Bone Joint Surg Am 87:570-6. 2005.... - Magnetic resonance imaging of in vivo kinematics after total knee arthroplastyKeh Yang Lee
Department of Radiology, University of California at San Francisco, San Francisco, California 94143 0946, USA
J Magn Reson Imaging 21:172-8. 2005.... - A pilot, two-year longitudinal study of the interrelationship between trabecular bone and articular cartilage in the osteoarthritic kneeGabrielle Blumenkrantz
Musculoskeletal and Quantitative Imaging Research Group, Department of Radiology, University of California, San Francisco, CA 94107, USA
Osteoarthritis Cartilage 12:997-1005. 2004..To examine the relationship between structural changes of trabecular bone and cartilage, in patients with varying degrees of osteoarthritis (OA) over 2 years, using magnetic resonance imaging... - A study of the relationship between molecular biomarkers of joint degeneration and the magnetic resonance-measured characteristics of cartilage in 16 symptomatic kneesKaren B King
Department of Medicine, University of California at San Francisco, Richmond, CA 94804, USA
Magn Reson Imaging 22:1117-23. 2004..Our findings support the hypothesis that cartilage molecular biomarkers reflect the molecular processes of cartilage degeneration and loss... - Computer-aided quantification of focal cartilage lesions of osteoarthritic knee using MRIKeh Yang Lee
Department of Radiology, University of California, San Francisco, San Francisco, California, USA
Magn Reson Imaging 22:1105-15. 2004.... - Zirconia femoral head fractures: a clinical and retrieval analysisJohn L Masonis
London Health Sciences Center, University of Western Ontario, London, Canada
J Arthroplasty 19:898-905. 2004..Monoclinic phase transformation following implantation remains a potential mechanism of ceramic head failure. We recommend that patients with recalled zirconia heads be advised of a potential fracture risk... - T2 relaxation time of cartilage at MR imaging: comparison with severity of knee osteoarthritisTimothy C Dunn
Department of Radiology, University of California at San Francisco, 185 Berry St, Suite 350, San Francisco, CA 94107 1739, USA
Radiology 232:592-8. 2004.... - Complications in primary total hip arthroplasty: avoidance and management: wearMichael D Ries
Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA
Instr Course Lect 52:257-65. 2003..However, the safety and efficacy of alendronate in the clinical management of osteolysis associated with total hip arthroplasty has not been established... - Relationship between femoral head size and distance to lesser trochanterRobert C Sproul
School of Medicine, University of California, San Francisco, CA 94143, USA
Clin Orthop Relat Res 461:122-4. 2007..This may be a helpful clinical measurement to assess leg length during surgical treatment of hip fractures... - Cemented hip arthroplasty with a novel cerclage cable technique for unstable intertrochanteric hip fracturesChris Grimsrud
University of California, San Francisco, CA 94143, USA
J Arthroplasty 20:337-43. 2005..The technique allows safe early weight bearing on the injured hip and had a relatively low rate of complications in our series... - Effect of gender and preoperative diagnosis on results of revision total knee arthroplastyStephanie Y Pun
Department of Orthopaedic Surgery, University of California, San Francisco, CA 94143, USA
Clin Orthop Relat Res 466:2701-5. 2008..LEVEL OF EVIDENCE: Level III, retrospective matched cohort study. See Guidelines for Authors for a complete description of levels of evidence... - Effect of ACL sacrifice, retention, or substitution on kinematics after TKAMichael D Ries
Department of Orthopedic Surgery, University of California, San Francisco, CA, USA
Orthopedics 30:74-6. 2007..Early results with a bicruciate-substituting TKA suggest that ACL function is necessary to achieve more normal kinematics after TKA...