Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 433 articles


Does Combined Intra- and Extraarticular ACL Reconstruction Improve Function and Stability? A Meta-analysis

Fernando Cury Rezende MD, Vinicius Ynoe Moraes MD, Ana Luiza Cabrera Martimbianco Bsc, Marcus Vinícius Luzo PhD, Carlos Eduardo Silveira Franciozi PhD, João Carlos Belloti PhD

ACL reconstruction aims to restore knee function and stability; however, rotational stability may not be completely restored by use of standard intraarticular reconstruction alone. Although individual studies have not shown the superiority of combined ACL reconstruction compared with isolated intraarticular reconstruction in terms of function and stability, biomechanical principles suggest a combined approach may be helpful, therefore pooling (meta-analyzing) the available randomized clinical studies may be enlightening.

Morbid Obesity: Increased Risk of Failure After Aseptic Revision TKA

Chad D. Watts MD, Eric R. Wagner MD, Matthew T. Houdek MD, David G. Lewallen MD, Tad M. Mabry MD

Patients with obesity are known to have a higher risk of complications after primary TKA; however, there is a paucity of data regarding the effects of obesity with revision TKAs.

The John Insall Award: No Functional Benefit After Unicompartmental Knee Arthroplasty Performed With Patient-specific Instrumentation: A Randomized Trial

Matthieu Ollivier MD, Sebastien Parratte MD, PhD, Alexandre Lunebourg MD, Elke Viehweger MD, PhD, Jean-Noel Argenson MD, PhD

Component alignment can influence implant longevity as well as perhaps pain and function after unicompartmental knee arthroplasty (UKA), but correct alignment is not consistently achieved. To increase the likelihood that good alignment will be achieved during surgery, smart tools such as robotics or patient-specific instrumentation (PSI) have been introduced.

Is There a Benefit to Highly Crosslinked Polyethylene in Posterior-stabilized Total Knee Arthroplasty? A Randomized Trial

Paul F. Lachiewicz MD, Elizabeth S. Soileau BSN

Polyethylene wear and osteolysis remain a concern with the use of modular, fixed-bearing total knee arthroplasty (TKA). A variety of highly crosslinked polyethylenes (XLPs) have been introduced to address this problem, but there are few data on the results and complications of this polyethylene in posterior-stabilized knee prostheses.

Do Psychological Factors Predict Poor Outcome in Patients Undergoing TKA? A Systematic Review

Yasser Khatib MBBS, MSports Med, FRACS(Orth), Aman Madan BSc(Med), MBBS, Justine M. Naylor PhD, BAppSc(Phty), Ian A. Harris MBBS, MMed(Clin Epi), PhD, FRACS(Orth)

A subgroup of patients undergoing TKA is unhappy with the outcome of surgery and preoperative psychological factors may play a role in their dissatisfaction.

Bicruciate-retaining Total Knee Replacement Provides Satisfactory Function and Implant Survivorship at 23 Years

James W. Pritchett MD

One of the goals of a TKA is to approximate the function of a normal knee. Preserving the natural ligaments might provide a method of restoring close to normal function. Sacrifice of the ACL is common and practical during a TKA. However, this ligament is functional in more than 60% of patients undergoing a TKA and kinematic studies support the concept of bicruciate-retaining (that is, ACL-preserving) TKA; however, relatively few studies have evaluated patients treated with bicruciate-retaining TKA implants.

Recurrent Hemarthroses After TKA Treated With an Intraarticular Injection of Yttrium-90

Stephen Fine MBBCh, FRACS, Alex Klestov MBBS, BSc, FRACP

Recurrent hemarthroses after a TKA are uncommon and usually respond to nonoperative treatment or intervention using angiographic embolization or synovectomy. However, in rare circumstances, the problem can be resistant to treatment.

The Mark Coventry Award: Custom Cutting Guides Do Not Improve Total Knee Arthroplasty Clinical Outcomes at 2 Years Followup

Denis Nam MD, Andrew Park MD, Jeffrey B. Stambough MD, Staci R. Johnson Med, Ryan M. Nunley MD, Robert L. Barrack MD

Custom cutting guides (CCGs; sometimes called patient-specific instrumentation [PSI]) in total knee arthroplasty (TKA) use preoperative three-dimensional imaging to fabricate cutting blocks specific to a patient’s native anatomy.

Are There Sex Differences in Knee Cartilage Composition and Walking Mechanics in Healthy and Osteoarthritis Populations?

Deepak Kumar PT, PhD, Richard B. Souza PT, PhD, Karupppasamy Subburaj PhD, Toran D. MacLeod PT, PhD, Justin Singh BS, Nathaniel E. Calixto BS, Lorenzo Nardo MD, Thomas M. Link MD, Xiaojuan Li PhD, Nancy E. Lane MD, Sharmila Majumdar PhD

Women are at a greater risk for knee osteoarthritis (OA), but reasons for this greater risk in women are not well understood. It may be possible that differences in cartilage composition and walking mechanics are related to greater OA risk in women.

Functional Impairment Is a Risk Factor for Knee Replacement in the Multicenter Osteoarthritis Study

Barton L. Wise MD, MSc, Jingbo Niu DSc, David T. Felson MD, MPH, Jean Hietpas LCSW, Alesia Sadosky PhD, MPH, MBA, James Torner PhD, MS, Cora E. Lewis MD, MSPH, Michael Nevitt PhD, MPH

Debilitating pain associated with knee osteoarthritis (OA) often leads patients to seek and complete total knee arthroplasty (TKA). To date, few studies have evaluated the relation of functional impairment to the risk of TKA, despite the fact that OA is associated with functional impairment.