Biography

Dr. Michael Ries is chief of the UCSF Arthroplasty Service and a specialist in the treatment of arthritis patients who require hip and knee treatment. He joined UCSF Medical Center in 1997, after serving as an arthritis fellow in the Department of Orthopedics at the University of Colorado in Denver.

Ries earned his undergraduate and graduate degrees from the Massachusetts Institute of Technology and his medical degree from Dartmouth Medical School in Hanover, NH. He completed his general surgery residency at North Shore University Hospital in Manhassett, N.Y. and his orthopedic residency at State Hospital of New York at Stony Brook.

Career

• 2002 - Present: Professor, Department of Orthopaedic Surgery, University of California, San Francisco
• 1999 -2002: Associate Residency Program Director, Department of Orthopaedic Surgery, University of California San Francisco
• 1997 - Present: Vice Chairman, Chief of Arthroplasty Service, Department of Orthopaedic Surgery, University of California, San Francisco
• 1997 - 2002: Associate Professor, Department of Orthopaedic Surgery, University of California, San Francisco
• 1993 - 1997: Clinical Assistant Professor of Orthopaedic Surgery, State University of New York at Stony Brook
• 1990 - 1993: Instructor in Clinical Orthopaedic Surgery, Columbia University College of Physicians and Surgeons, New York, New York
• 1989 - 1997: Attending Orthopaedic Surgeon, The Mary Imogene Bassett Hospital, Cooperstown, New York
• 1983 - 1984: Research Assistant, Biomechanics Laboratory, Department of Orthopaedics, State University of New York at Stony Brook

Education

• 1978: BS, Material Sciences & Engineering, Massachusetts Institute of Technology
• 1979: MS, Material Sciences & Engineering, Massachusetts Institute of Technology
• 1982: MD, Dartmouth Medical School, Hanover, NH
• 1982 - 1983: General Surgery Internship, North Shore University Hospital, Manhassett, NY
• 1984 - 1988: Orthopaedic Residency, State University of New York at Stony Brook
• 1988 - 1989: Arthritis Fellow, Department of Orthopaedics, University of Colorado, Denver

Research

Behavior of biomaterials used in total joint replacements - bone cement used to attach total joint replacements to bone can degrade over time. The aim of this research is to identify the mechanisms by which this degradation occurs and to improve the longevity of cemented total hip and knee arthroplasty.

Biomechanics of revision total hip arthroplasty the stability and stress tansfer to bone of a hip implant can influence its long term function. The aim of this research is to identify the surgical techniques and implant design features which optimize implant stability and stress transfer to bone.

Publications

• Morshed, S., Huffman, R., and Ries, M.D.: Septic Arthritis of the Hip and Intra-Pelvis Abscess following Intra-Articular Injection of the Hylan G-F 20. J. Bone Joint Surg. 86A: 823-826, 2004.
• Ries, M.D.: Dissociation of the UHMWPE Insert from Tibial Baseplate in Total Knee Arthroplasty. J. Bone Joint Surg. 86A: 1522-1524, 2004.
• Bradford-Collons, L., Baker, D.A., Graham, J., Chawan, A., Ries, M.D., and Pruitt, L.: Wear and Surface Cracking in Early Retrieved Highly Crosslinked Durasul Acetabular Liners. J. Bone Joint Surg. 86A: 1271-1282, 2004.
• Bradford, L., Kurland, M., Sankaran, H., Kim, H., Pruitt, L., and Ries, M.: Early failure due to Osteolysis in Highly Crosslinked Ultra-High Molecular Weight Polyethylene: A Case Report. J. Bone Joint Surg. 86A: 1051-1056, 2004.
• Ries M.D., Haas, S.B., and Windsor, R.E.: Soft-Tissue Balance in Revision Total Knee Arthroplasty. J Bone Joint Surg 86A: S81-S86, 2004.
• Busfield, B., Huffman, R., Nahai, F., Hoffman, W., and Ries, M.D.: Extended Medial Gastrocnemius Rotational flap for Treatment of Chronic Knee Extensor Mechanism Deficiency in Patients with and without Total Knee Arthroplasty. Clin. Orthop. 428:190-197, 2004.
• Bradford, L., Baker, D., Ries, M.D., Pruitt, L: Fatigue Crack Propogation Resistance of Highly Crosslinked Polyethylene. Clin. Orthop. 429: 68-72, 2004.
• David-Vaudey, E., Ghosh, S., Ries, M., Majumdar, S.: T2 Relaxation Time Measurements in Osteoarthritis. Magn Reson Imaging 22: 673-682, 2004.
• King, K., Majumdar, S., Lindsey, C., Ries, M., Steinbach, L., Dunn, T.: A study of the relationship between molecular biomarkers of joint degeneration and the magnetic resonance-measured characteristics of cartilage in 16 symptomatic knees. Magnetic resonance Imaging 22:1117-1123, 2004.
• Blumenkrantz, G., Lindsey, C.T., Dunn, T.C., Jin H., Ries, M.D., Link, T.M., Steinbach, L.S., Majumdar, S.: A pilot, two-year longitudinal study of the interrelationship between trabecular bone and articular cartilage in the osteoarthritic knee. Osteoarthritis and Cartilage 12: 997-1005, 2004.
• Dunn, T.C., Lu, Y., Jin, H., Ries, M.D., and Majumdar, S.: T2 relaxation time of cartilage at MR imaging: Comparison with severity of knee osteoarthritis. Radiology 232: 592-598, 2004.
• Lindsey CT, Narasimhan A, Adolfo JM, Jin H, Steinbach LS, Link T, Ries M, Majumdar S. Magnetic resonance evaluation of the interrelationship between articular cartilage and trabecular bone of the osteoarthritic knee. Osteoarthritis Cartilage. 12:86-96,2004.
• Lee KY, Dunn TC, Steinbach LS, Ozhinsky E, Ries MD, Majumdar S. Computer-aided quantification of focal cartilage lesions of osteoarthritic knee using MRI. Magn Reson Imaging. 22:1105-1115, 2004.
• Masonis, J. L., Bourne, R.B., Ries, M.D., McCalden, R.W., Salehi, A., and Kelman, D.C.: Zirconia femoral head fractures: A clinical and retrieval analysis. J. Arthroplasty 19: 898 - 905, 2004.
• Ebenstein, C.M., Kuo, A., Rodrigo, J.J., Reddi, A. H., Ries, M.D., and Pruitt, L.: A Nanoindentation Technique for Functional Evaluation of Cartilage Repair Tissue. J. Mater. Res. (In Press)
• Grimsrud, C., Monzon, R.J., Richman, J., and Ries, M.D.: Cemented Hip Arthroplasty with a Novel Circlage Technique for Unstable Intertrochanteric Hip Fractures. J. Arthroplasty 20:337-343, 2005.
• Morshad, S., Huffman, R., and Ries, M.D.: Extended Trochanteric Osteotomy for Two-stage Revision of Infected Total Hip Arthroplasty?????????. J. Arthroplasty 20:294-301, 2005.
• MacAvoy, M, and Ries, M.D.: The Ball and Socket Articulating Spacer for Infected Total Knee Arthroplasty. J. Arthroplasty (in press).
• Ries, M.D., Highly Crosslinked Polyethylene: The Debate is Over ????????? In Opposition. J. Arthroplasty 20 (Suppl 2):59-62, 2005.
• Hansen, E., and Ries, M.D.: Revision Total Hip Arthroplasty for Large Medial (Protrusio) Defects with a Rim Fit Cementless Acetabular Component. J. Arthroplasty (in press).
• Bozic, K. and Ries, M.D.: The Impact of Infected Total Hip Arthroplasty on Hospital and Surgeon Resource Utilization. J Bone Joint Surg (in press).
• Bozic, K., Katz, P., Cisternas, M., Ono, L., Ries, M.D., and Showstack, J.: Hospital resource use in primary and revision total hip arthroplasty. J. Bone Joint Surg. 87A:570-576, 2005.
• Morshad, S., Huffman, R., and Ries, M.D.: Extended Trochanteric Osteotomy for Two-stage Revision of Infected Total Hip Arthroplasty?????????. J. Arthroplasty 20:294-301, 2005.
• Lee, K., Blumenkrantz, G, Slavinsky, J., Ries, M., and Majumdar, S.: Magnetic Resonance Imaging of in vivo kinematics after total knee arthroplasty. Magnetic Resonance Imaging 21:172-178, 2005.
• Bozic, K.J., and Ries, M.D.: Wear and Osteolysis in Total Hip Arthroplasty. Sem Arthroplasty (in press).
• Ries, M.D., and Pruitt, L.: Effect of Crosslinking on the Microstructure and Mechanical Properties of UHMWPE. Clin Orthrop (in press)
• Bozic, K.J., Busfield, B., and Ries, M.D.: Patella Fractures and Total Knee Arthroplasty. Tech Knee Surg. 4:55-61, 2005.
• Cheng, K., Pruitt, C., Zaloudek, C., and Ries, M.D.: Osteolysis Caused by Tibial Component Debonding in Total Knee Arthroplasty. Clin Orthrop (in press).
• Ries, M.D., Young, E., Al-Marashi, L., Goldstein, P., Hetherington, A., Petrie, T., and Pruitt, L.: In Vivo Behavior of Acrylic Bone Cement in Total Hip Arthroplasty. Biomaterials 27: 256-261, 2006.

Book Chapters:

• Ries, M.D. (editor): Revision Total Knee Arthroplasty. AAOS Surgical Techniques in Orthopaedics. American Academy of Orthopaedic Surgeons, Rosemont, IL, 2004.
• Ries, M.D.: Bone Preparation In: Revision Total Knee Arthroplasty (Ries, M.D. editor). American Academy of Orthopaedic Surgeons, Rosemont, IL, 2004.
• Ries, M.D. and Natens, P.: Pearls and Pitfalls. In: Revision Total Knee Arthroplasty. American Academy of Orthopaedic Surgeons, Rosemont, IL, 2004.
• Ries, M.D.: The New Polys: Have we been there before? Instructional Course lectures, Volume 54. Pellegrini, V. (ed.) pp 189-192, 2005.
• Bellemans, J., Ries, M.D., and Victor, J. (eds): Total Knee Arthroplasty: A Guide to Better Performance, Springer-Verlag, 2005.
• Ries, M.D.: Wear in Conventional and Highly Crosslinked Polyethylene. In: Bellemans, J., Ries, M.D., Victor, J. (eds) Total Knee Arthroplasty. A Guide to Better Performance, pp 361-364, 2005.
• Ries, M.D., Bellmans, J., and Victor, J.: The High Performance Knee. In: Bellemans, J., Ries, M.D., Victor, J. (eds) Total Knee Arthroplasty. A Guide to Better Performance, pp 303-310, 2005.
• Ries, M.D.: Conclusions. In: Bellemans, J., Ries, M.D., Victor, J. (eds) Total Knee Arthroplasty. A Guide to Better Performance, pp 401-404, 2005.

Presentations

• Ries, M.D.: Soft Tissue Balancing of the Hip - A Concept Which Has Come of Age. Posterior Approach. Instructional Course Lecture # 321. American Academy of Orthopaedic Surgeons 71st Annual Meeting, San Francisco, California, March 10 - 14, 2004.
• Ries, M.D.: Alternative Bearing Surfaces: The Good, the Bad, and the Indifferent. Highly Crosslinked Polyethylene - Have We Been There Before? Instructional Course Lecture # 221. American Academy of Orthopaedic Surgeons 71st Annual Meeting, San Francisco, California, March 10 - 14, 2004.
• Ries, M.D.: Highly Crosslinked Polyethylene - Some Cons. The Hip Society, San Francisco, CA, March 13, 2004.
• Lee, K-Y, Slavinsky, J.P., Ries, M.D., Blumenkrantz, G., and Majumdar, S.: Magnetic Resonance Imaging of In Vivo Kinematics After Total Knee Arthroplasty. Association of Bone and Joint Surgeons Annual Meeting, Nashville, TN, June 16-19, 2004.
• Ries, M.: Knee Kinematics. Australian Knee Society Annual Meeting, Sydney, Australia, October 22-23, 2004.
• Ries, M.: Bearing Surface Choices in Total Knee Arthroplasty. Australian Knee Society Annual Meeting, Sydney, Australia, October 22-23, 2004.
• Ries, M.D.: Alternative Bearing Surfaces: The Good, the Bad, and the Indifferent. Highly Crosslinked Polyethylene - Have We Been There Before? Instructional Course Lecture # 192. American Academy of Orthopaedic Surgeons 72nd Annual Meeting, Washington, DC, February 23-27, 2005.
• Ries, M.D. Potential Pitfalls with Highly Crosslinked Polyethylenes. Symposium: Clinical Evidence for Alternative Bearings in Total Hip Arthroplasty. American Academy of Orthopaedic Surgeons 72nd Annual Meeting, Washington, DC, February 23-27, 2005.
• Parvizi, J., Sleeper, J., Freeman, T., Steinbeck, M., and Ries, M.D.: Molecular Mechanisms of Arthrofibrosis following Total Knee Arthroplasty. Association of Bone and Joint Surgeons, 57th Annual Meeting, Carmel, CA, June 8-12, 2005.
• Bozic, K. and Ries, M.D.: The Impact of Infected Total Hip Arthroplasty on Hospital and Surgeon Resource Utilization and Patient Access to Care. Association of Hip and Knee Surgeons, Dallas, TX November 4-6, 2005.
• Parvizi, J., Steinbeck, M., Freeman, T., Ries, M.D., Rand, J. and Sherkey, Pi: Mleculare Mechanisms of Idiopathic Arthrobrosis following Total Knee Arthroplasy, American Association of Hip and Knee Surgeons, Dalals, TX,: November 4-6, 2005.
• Ries, M.D., Bozic, K., Andersen, M.: Patella Augmentation Using a Porous Tantalum Implant: The Importance of Residual Patellar Bone Stock. 22nd Annual Interim Meeting of the Knee Society, New York, NY, September 8-16, 2005.

Grants and Awards

• 2000 - Resident Teaching Award, UCSF Department of Orthopaedic Surgery
• 2001 - Association of Bone and Joint Surgeons Hip Society Scholar
• 2003 - California Orthopaedic Association Lloyd Taylor Award ????????? Morshed, S., Huffman, G., Ries, M.: Extended Trochanteric Osteotomy for Two-Stage Revision of Infected Total Hip Arthroplasty
• 2004 - Association of Bone and Joint Surgeons ????????? Best Slide Presentation. Lee, K-Y, Slavinsky, J.P., Ries, M.D., Blumenkrantz, G., and Majumdar, S.: Magnetic Resonance Imaging of In Vivo Kinematics After Total Knee Arthroplasty.

Membership & Committees

• American Academy of Orthopaedic Surgeons
• American Orthopaedic Association
• American Association of Hip and Knee Surgeons
• Association for Arthritic Hip and Knee Surgery
• California Orthopaedic Association
• Eastern Orthopaedic Association
• Hip Society
• Knee Society
• New York Orthopaedic Society
• Orthopaedic Research Society
• Otsego County Medical Society
• University of California Joint Graduate Group in Bioengineering
• Western Orthopaedic Association