Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 447 articles


Ethnic and Gender Differences in the Functional Disparities after Primary Total Knee Arthroplasty

Atul F. Kamath MD, John G. Horneff MD, Vandy Gaffney BA, Craig L. Israelite MD, Charles L. Nelson MD

The benefits of TKA have been well documented. Whether these benefits apply equally across gender and ethnic groups is unclear. Given the underuse of TKA among certain demographic groups, it is important to understand whether gender or ethnicity influence pain and function after TKA.

Increased Chondrocyte Death after Steroid and Local Anesthetic Combination

Boglárka Farkas MD, Krisztián Kvell MD, PhD, Tamás Czömpöly MD, PhD, Tamás Illés MD, PhD, Tamás Bárdos MD, PhD

Hyaline articular cartilage has limited repair and regeneration capacity. Intraarticular administration of glucocorticoid and local anesthetic injections play an important role in the therapy of osteoarthritis. Glucocorticoids and anesthetics reportedly enhance apoptosis in chondrocytes, but effects of the combined use of glucocorticoids and local anesthetics are unknown.

Minimizing Electromagnetic Interference from Surgical Instruments on Electromagnetic Surgical Navigation

Faustin Stevens BS, Michael A. Conditt PhD, Nikhil Kulkarni MS, Sabir K. Ismaily BS, Philip C. Noble PhD, David R. Lionberger MD

Electromagnetic computer-assisted surgery (EM-CAS) can be affected by various metallic or ferromagnetic factors.

Cruciate-retaining TKA Using a Third-generation System with a Four-pegged Tibial Component: A Minimum 10-year Followup Note

Adam J. Schwartz MD, Craig J. Della Valle MD, Aaron G. Rosenberg MD, Joshua J. Jacobs MD, Richard A. Berger MD, Jorge O. Galante MD

A third-generation TKA system was designed to address problems encountered with earlier designs including a high rate of patellofemoral complications. At a minimum of 5 years, we previously reported survivorship of 98.7% using revision for any reason as the endpoint for a cohort that includes the patients described in this report. That cohort was unique in that a tibial component that uses four short pegs for fixation was used in a subset of patients undergoing cruciate-retaining TKA and the tibial and femoral components were precoated with polymethylmethacrylate.

How Does Osteonecrosis About the Knee Progress in Young Patients with Leukemia?: A 2- to 7-year Study

E. J. Karimova MD, A. Wozniak MS, J. Wu PhD, M. D. Neel MD, S. C. Kaste DO

Osteonecrosis is a major treatment complication of pediatric leukemias owing to its potential to cause joint deterioration. Because of potential long-term effects of osteonecrosis on joints, information regarding its progression and collapse in different patients can be used to identify high-risk groups, advise the patients and parents of this complication, and potentially consider the risk for development of osteonecrosis in planning primary treatment.

Osteolysis in Well-functioning Fixed- and Mobile-bearing TKAs in Younger Patients

Young-Hoo Kim MD, Yoowang Choi MD, Jun-Shik Kim MD

Periprosthetic osteolysis is an increasingly prevalent complication of TKA. To reduce the polyethylene wear and periprosthetic osteolysis, particularly in young patients, the design of the contemporary fixed-bearing TKAs has been modified and mobile-bearing TKAs have been introduced.

Rotational References for Total Knee Arthroplasty Tibial Components Change with Level of Resection

Bradley P. Graw MD, Alexander H. Harris PhD, Krishna R. Tripuraneni MD, Nicholas J. Giori MD, PhD

Various landmarks can guide tibial component rotational alignment in routine TKA, but with the deeper tibial resection levels common in complex primary and revision TKAs, it is unknown whether these landmarks remain reliable.

Routine Surveillance of Modular PFC TKA Shows Increasing Failures after 10 Years

Andrew S. Malin MD, John J. Callaghan MD, Kevin J. Bozic MD, MBA, Steve S. Liu MD, Devon D. Goetz MD, Nicholas Sullivan BS, Scott S. Kelley MD

A 10-year survivorship of 100% was reported for patients with PFC cruciate-retaining prostheses. Beyond 10 years, we observed additional polyethylene wear likely related to thin liners gamma-irradiated in air and were concerned this wear might predispose to implant construct failure.

Knee Pain in a 17-year-old Girl

Skander Chaabane MD, Amira Merghani MD, Cyrine Drissi MD, Mohamed Fethi Ladeb PhD

Medial Knee Osteoarthritis Treated by Insoles or Braces: A Randomized Trial

Tom M. Raaij MD, PhD, Max Reijman PhD, Reinoud W. Brouwer MD, PhD, Sita M. A. Bierma-Zeinstra PhD, Jan A. N. Verhaar MD, PhD

There is controversial evidence regarding whether foot orthoses or knee braces improve pain and function or correct malalignment in selected patients with osteoarthritis (OA) of the medial knee compartment. However, insoles are safe and less costly than knee bracing if they relieve pain or improve function.