Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 443 articles


Surgical Technique: Muscle Transfer Restores Extensor Function After Failed Patella-Patellar Tendon Allograft

Leo A. Whiteside MD

Extensor mechanism allograft provides an effective remedy for severe quadriceps deficiency caused by loss of the patella, patellar tendon, and quadriceps tendon in TKA. Late failure is common, however, and major quadriceps deficiency occurs after removal of the allograft material.

Do Patients Return to Work After Total Knee Arthroplasty?

Adolph V. Lombardi MD, Ryan M. Nunley MD, Keith R. Berend MD, Erin L. Ruh MS, John C. Clohisy MD, William G. Hamilton MD, Craig J. Della Valle MD, Javad Parvizi MD, Robert L. Barrack MD

Although there is extensive literature supporting a high success rate, there are limited data on return to work after total knee arthroplasty (TKA).

Total Knee Arthroplasty in Patients With Juvenile Idiopathic Arthritis

Thomas J. Heyse MD, Michael D. Ries MD, Johan Bellemans MD, Stuart B. Goodman MD, Richard D. Scott MD, Timothy M. Wright PhD, Jospeh D. Lipman MSc, Ran Schwarzkopf MD, Mark P. Figgie MD

Total knee arthroplasty (TKA) for juvenile idiopathic arthritis is rare but is nonetheless indicated for many patients with this disease. Few reports exist on the results of TKA in patients with juvenile idiopathic arthritis.

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.