Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 443 articles


The Value of Valgus Stress Radiographs in the Workup for Medial Unicompartmental Arthritis

Wenzel Waldstein MD, Jad Bou Monsef MD, Johannes Buckup MD, Friedrich Boettner MD

High tibial osteotomy and unicompartmental knee arthroplasty are surgical treatment options for unicompartmental knee arthritis; these procedures are indicated for patients who do not have severe arthritis in the lateral compartment. Valgus stress radiographs sometimes are used to make this evaluation, but this test has not been critically evaluated.

Is TKA Using Patient-specific Instruments Comparable to Conventional TKA? A Randomized Controlled Study of One System

Yoon Whan Roh MD, Tae Woo Kim MD, Sahnghoon Lee MD, PhD, Sang Cheol Seong MD, PhD, Myung Chul Lee MD, PhD

Patient-specific CT-based instrumentation may reduce implant malpositioning and improve alignment in TKA. However, it is not known whether this innovation is an advance that benefits patients.

Does Vitamin D Improve Osteoarthritis of the Knee: A Randomized Controlled Pilot Trial

Divya Sanghi PhD, Abhishek Mishra MSc, Amar Chandra Sharma MSc, Ajai Singh MS, S. M. Natu PhD, Sarita Agarwal PhD, Rajeshwar Nath Srivastava MS

Animal, epidemiologic, and human clinical studies suggest a putative role for vitamin D in osteoarthritis (OA). Inadequate sunlight exposure and lower serum levels of 25(OH)D appear in some reports to be associated with an increased risk for progression of knee OA.

Continuous Adductor Canal Blocks Are Superior to Continuous Femoral Nerve Blocks in Promoting Early Ambulation After TKA

Seshadri C. Mudumbai MD, MS, T. Edward Kim MD, Steven K. Howard MD, J. Justin Workman MD, Nicholas Giori MD, Steven Woolson MD, Toni Ganaway BA, Robert King BS, Edward R. Mariano MD, MAS (Clinical Research)

Femoral continuous peripheral nerve blocks (CPNBs) provide effective analgesia after TKA but have been associated with quadriceps weakness and delayed ambulation. A promising alternative is adductor canal CPNB that delivers a primarily sensory blockade; however, the differential effects of these two techniques on functional outcomes after TKA are not well established.

Single-injection or Continuous Femoral Nerve Block for Total Knee Arthroplasty?

Eric Albrecht MD, DESA (Fellow), Dorothea Morfey BSc, MBBS, Vincent Chan MD, Rajiv Gandhi MD, Arkadiy Koshkin MD, Ki Jinn Chin MD, MBBS, Sylvie Robinson BSc, Philippe Frascarolo PhD, Richard Brull MD

The ideal local anesthetic regime for femoral nerve block that balances analgesia with mobility after total knee arthroplasty (TKA) remains undefined.

Does Adding Antibiotics to Cement Reduce the Need for Early Revision in Total Knee Arthroplasty?

Eric Bohm MD, MSc, FRCSC, Naisu Zhu MD, DrPH, Jing Gu MD, Nicole Guia MHSc, Cassandra Linton MSc, Tammy Anderson MSc, David Paton MSc, Michael Dunbar MD, FRCSC, PhD

There is considerable debate about whether antibiotic-loaded bone cement should be used for fixation of TKAs. While antibiotics offer the theoretical benefit of lowering early revision due to infection, they may weaken the cement and thus increase the likelihood of aseptic loosening, perhaps resulting in a higher revision rate.

Coronal Limb Alignment and Indications for High Tibial Osteotomy in Patients Undergoing Revision ACL Reconstruction

Ho Hyun Won MD, Chong Bum Chang MD, PhD, Min Soo Je MD, Moon Jong Chang MD, Tae Kyun Kim MD, PhD

Failed ACL reconstruction frequently is accompanied by irreparable medial meniscal tear and/or visible osteoarthritis (OA) in the medial tibiofemoral joint. Thus, assessment for the presence of varus malalignment is important in caring for patients in whom revision ACL reconstruction is considered.

Trabecular Metal in Total Knee Arthroplasty Associated with Higher Knee Scores: A Randomized Controlled Trial

Mariano Fernandez-Fairen MD, PhD, Daniel Hernández-Vaquero MD, PhD, Antonio Murcia MD, PhD, Ana Torres MD, PhD, Rafael Llopis MD, PhD

Porous tantalum is an option of cementless fixation for TKA, but there is no randomized comparison with a cemented implant in a mid-term followup.

The Oxford Unicompartmental Knee Fails at a High Rate in a High-volume Knee Practice

William C. Schroer MD, C. Lowry Barnes MD, Paul Diesfeld PA, Angela LeMarr RN, Rachel Ingrassia RN, Diane J. Morton MS, Mary Reedy RN

The Oxford knee is a unicompartmental implant featuring a mobile-bearing polyethylene component with excellent long-term survivorship results reported by the implant developers and early adopters. By contrast, other studies have reported higher revision rates in large academic practices and in national registries. Registry data have shown increased failure with this implant especially by lower-volume surgeons and institutions.

Continuous Femoral Nerve Block Using 0.125% Bupivacaine Does Not Prevent Early Ambulation After Total Knee Arthroplasty

Michael J. Beebe MD, Rachel Allen MD, Mike B. Anderson MS, ATC, Jeffrey D. Swenson MD, Christopher L. Peters MD

Continuous femoral nerve block has been shown to decrease opioid use, improve postoperative pain scores, and decrease length of stay. However, several studies have raised the concern that continuous femoral nerve block may delay patient ambulation and increase the risk of falls during the postoperative period.