Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 450 articles


The Effect of Geometric Variations in Posterior-stabilized Knee Designs on Motion Characteristics Measured in a Knee Loading Machine

Peter S. Walker PhD, Michael T. Lowry BS, Anoop Kumar MS

In different posterior-stabilized (PS) total knees, there are considerable variations in condylar surface radii and cam-post geometry. To what extent these variations affect kinematics is not known. Furthermore, there are no clearly defined ideal kinematics for a total knee.

Oxidized Zirconium versus Cobalt-Chromium in TKA: Profilometry of Retrieved Femoral Components

Thomas J. Heyse MD, Marcella E. Elpers BS, Danyal H. Nawabi MD, Timothy M. Wright PhD, Steven B. Haas MD

Oxidized zirconium (OxZr) was introduced as an alternative bearing for femoral components in total knee arthroplasty (TKA) in an attempt to reduce wear compared with conventional cobalt-chromium (CoCr) alloys.

Correction of Varus Deformity During TKA With Reduction Osteotomy

Arun B. Mullaji FRCS Ed, MCh Orth, MS Orth, Gautam M. Shetty MS Orth

Reduction osteotomy (removing the posteromedial tibial bony flare) is one step to aid in achieving deformity correction in varus arthritic knees during TKA. However, the amount of deformity correction achieved with reduction osteotomy during TKA is unclear.

Comparison of Total Knee Arthroplasty With Highly Congruent Anterior-stabilized Bearings versus a Cruciate-retaining Design

Christopher L. Peters MD, Patrick Mulkey MD, Jill Erickson PA-C, Michael B. Anderson MS, ATC, Christopher E. Pelt MD

The use of a highly conforming, anterior-stabilized bearing has been associated with clinical success in a limited number of studies.

Is There a Role for Knee Arthrodesis With Modular Endoprostheses for Tumor and Revision of Failed Endoprostheses?

Andrea Angelini MD, Eric Henderson MD, Giulia Trovarelli MD, Pietro Ruggieri MD, PhD

Knee arthrodeses are performed to treat infection after arthroplasty and tumors requiring extensive soft tissue resection. Many techniques have been described, but most have important disadvantages. Currently, endoprosthetic arthrodesis implants are available, but little is known about them.

How Useful Is MRI in Diagnosing Isolated Bundle ACL Injuries?

Moon Jong Chang MD, Chong Bum Chang MD, PhD, Ja-Young Choi MD, PhD, Ho Hyun Won MD, Tae Kyun Kim MD, PhD

Selective bundle anterior cruciate ligament (ACL) reconstruction and/or remnant ACL preservation may be reasonable options for some patients. However, the frequency of isolated anteromedial (AM) or posterolateral (PL) bundle injuries in patients undergoing ACL reconstruction is unknown, and the value of MRI for prediction of this injury pattern is likewise unknown.

Maximizing Tibial Coverage Is Detrimental to Proper Rotational Alignment

Stacey Martin MD, Alex Saurez BS, Sabir Ismaily BS, Kashif Ashfaq MD, Philip Noble PhD, Stephen J. Incavo MD

Traditionally, the placement of the tibial component in total knee arthroplasty (TKA) has focused on maximizing coverage of the tibial surface. However, the degree to which maximal coverage affects correct rotational placement of symmetric and asymmetric tibial components has not been well defined and might represent an implant design issue worthy of further inquiry.

Translation and Cultural Adaptation of the Turkish Lysholm Knee Scale: Ease of Use, Validity, and Reliability

Derya Celik PT, PhD, Dilber Coşkunsu PT, MSc, Önder Kılıçoğlu MD, PhD

The Lysholm knee scale, first published in 1982, is an eight-item questionnaire designed to evaluate patients after knee ligament injury. However, as a tool developed in English, its use as a validated instrument has been limited to English-language populations.

Risk Factors for Early Revision After Primary TKA in Medicare Patients

Kevin J. Bozic MD, MBA, Edmund Lau MS, Kevin Ong PhD, Vanessa Chan MPH, Steven Kurtz PhD, Thomas P. Vail MD, Harry E. Rubash MD, Daniel J. Berry MD

Patient, surgeon, health system, and device factors are all known to influence outcomes in total knee arthroplasty (TKA). However, patient-related factors associated with an increased risk of early failure are not well understood, particularly in elderly patients.

Total Knee Arthroplasty After High Tibial Osteotomy: No Differences Between Medial and Lateral Osteotomy Approaches

Stephen Preston MDCM, James Howard MD, FRCSC, Douglas Naudie MD, FRCSC, Lyndsay Somerville PhD, James McAuley MD, FRCSC

High tibial osteotomy (HTO) has long been accepted as an effective treatment for unicompartmental osteoarthritis of the knee in young, active adults. For varus knees, the two most commonly performed valgus-producing HTOs are the lateral closing wedge and the medial opening wedge. Regardless of technique, some HTOs fail and are converted to TKA. To our knowledge, no studies have directly compared TKAs done after lateral closing-wedge osteotomies to those done after medial opening-wedge osteotomies.