Clinical Focus

• Orthopaedic Surgery
• Primary Total Hip and Knee Replacement
• Revision Total Hip and Knee Replacement
• Evaluation of Failed Joint Replacement
• Unicompartmental Knee Replacement

Honors and Awards

• Guest Speaker, 55th Annual Meeting of Korean Hip Society (2011)
• Visiting Professor, Columbia University, New York, NY (2011)
• Presidential Guest Speaker, 41st Annual Japanese Society for Replacement Arthroplasty (2011)
• Guest Speaker, Combined 33rd SOA- 30th AOA Annual Congress (2010)
• AAHKS President's Honor Roll, Gold Level, American Association of Hip and Knee Surgeons (2010)

Professional Education

Postdoctoral Advisees

Philipp Leucht

Graduate & Fellowship Program Affiliations

• Orthopedic Surgery

Industry Relationships

Stanford is committed to ethical and transparent interactions with our industry partners. It is our policy to disclose payments of $5,000 or more, equity valued at $5,000 or more in a publicly traded company, or any equity in a privately held company, to physicians and scientists employed by Stanford University from companies or other commercial entities with which they interact as part of their professional activities. View Full Information

Current Research Interests

Dr. Maloney is nationally and internationally recognized for his contributions to the improved understanding of the causes of failure of surgical joint replacement. For example, he established a critical link between polyethylene wear debris and bony erosion, with resulting significant changes in the materials and design strategies of joint replacement surgery. More recently, he has shown that wear debris particles are coated in vivo with human proteins, such as albumin; this observation has notably improved the validity of in vitro investigation in this area. His research in the area of joint replacement has twice won awards from the Hip Society. Dr. Maloney is a member of the Central Program Committee of the American Academy of Orthopedic Surgeons, and he chairs multiple additional national committees, including the National Hip and Knee Registry Work Group of the American Academy of Orthopedic Surgeons, the Awards Committee of the Association of Bone and Joint Surgeons, the Awards and Publications Committee of the Hip Society, and the ABC Exchange Fellowship Subcommittee of the American Orthopedic Association. He has been a Visiting Professor to numerous universities and institutions throughout the United States and Asia.

Clinical Trials

• Evaluation of E-Poly (tm) and Regenerex (tm) Cementless Acetabular Components: Clinical and Radiographic Outcomes Recruiting

Publications

• Age and obesity are risk factors for adverse events after total hip arthroplasty. Huddleston JI, Wang Y, Uquillas C, Herndon JH, Maloney WJ. Clin Orthop Relat Res. 2012; 470 (2): 490-6
• Decreased length of stay after TKA is not associated with increased readmission rates in a national Medicare sample. Vorhies JS, Wang Y, Herndon JH, Maloney WJ, Huddleston JI. Clin Orthop Relat Res. 2012; 470 (1): 166-71
• Effects of intermittent hydrostatic pressure and BMP-2 on osteoarthritic human chondrocyte metabolism in vitro. Smith RL, Lindsey DP, Dhulipala L, Harris AH, Goodman SB, Maloney WJ. J Orthop Res. 2011; 29 (3): 361-8
• Human bone marrow hematopoietic stem cells are increased in frequency and myeloid-biased with age. Pang WW, Price EA, Sahoo D, Beerman I, Maloney WJ, Rossi DJ, Schrier SL, Weissman IL. Proc Natl Acad Sci U S A. 2011; 108 (50): 20012-7
• Readmission and length of stay after total hip arthroplasty in a national Medicare sample. Vorhies JS, Wang Y, Herndon J, Maloney WJ, Huddleston JI. J Arthroplasty. 2011; 26 (6 Suppl): 119-23