Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 450 articles


The Risk of Revision After TKA Is Affected by Previous HTO or UKA

Otto Robertsson MD, PhD, Annette W-Dahl RN, PhD

High tibial osteotomy (HTO) and unicompartmental arthroplasty (UKA) are reconstructive surgeries advocated for younger patients. In case of failure or progression of osteoarthritis, they can both be converted to a total knee arthroplasty (TKA).

Long-term Followup of Surgically Treated Knee Dislocations: Stability Restored, but Arthritis Is Common

Gregory C. Fanelli MD, Paul L. Sousa MBA, Craig J. Edson MS

Surgical treatment of knee dislocations is intended to correct the anatomic injury and restore knee stability and patient function. Several studies have shown successful results with surgical treatment of knee dislocations with up to 10 years of followup, but longer-term studies are uncommon.

Does Imageless Computer-assisted TKA Lead to Improved Rotational Alignment or Fewer Outliers? A Systematic Review

Marrigje F. Meijer BSc (Med), Inge H. F. Reininga PhD, Alexander L. Boerboom MD, Sjoerd K. Bulstra MD, PhD, Martin Stevens PhD

Computer-assisted surgery (CAS) has been developed to enhance prosthetic alignment during primary TKAs. Imageless CAS improves coronal and sagittal alignment compared with conventional TKA. However, the effect of imageless CAS on rotational alignment remains unclear.

Increased Complication Rates After Hip and Knee Arthroplasty in Patients With Cirrhosis of the Liver

John V. Tiberi MD, Viktor Hansen MD, Naglaa El-Abbadi MS, MPH, Hany Bedair MD

Risk stratification is critical in patients with cirrhosis undergoing THAs and TKAs, as they may be more likely to have serious medical and surgical complications. As opposed to the Child-Pugh scoring system, which has limited use for orthopaedic surgeons inexperienced in assessing ascites and hepatic encephalopathy, the Model for End-stage Liver Disease (MELD) is an easily calculated, validated scoring system for severity of liver disease based on common laboratory values; however, its usefulness for predicting complications after elective arthroplasty has not been studied.

The John Insall Award: Morbid Obesity Independently Impacts Complications, Mortality, and Resource Use After TKA

Michele R. D’Apuzzo MD, Wendy M. Novicoff PhD, James A. Browne MD

The importance of morbid obesity as a risk factor for complications after total knee arthroplasty (TKA) continues to be debated. Obesity is rarely an isolated diagnosis and tends to cluster with other comorbidities that may independently lead to increased risk and confound outcomes. It is unknown whether morbid obesity independently affects postoperative complications and resource use after TKA.

Does Intact Limb Loading Differ in Servicemembers With Traumatic Lower Limb Loss?

Alison L. Pruziner DPT, Kathryn M. Werner BS, Timothy J. Copple MS, Brad D. Hendershot PhD, Erik J. Wolf PhD

The initiation and progression of knee and hip arthritis have been related to limb loading during ambulation. Although altered gait mechanics with unilateral lower limb loss often result in larger and more prolonged forces through the intact limb, how these forces differ with traumatic limb loss and duration of ambulation have not been well described.

Epidemiology of Multiligament Knee Reconstruction

Sean M. Wilson BA, Nabil Mehta BSE, Huong T. Do MA, Hassan Ghomrawi PhD, Stephen Lyman PhD, Robert G. Marx MD, MSc, FRCSC

The multiple-ligament-injured knee represents a special challenge, being an uncommon injury that is both severe and complicated to treat. Many studies have evaluated patients treated for this injury, but most are limited in their scope. The evaluation of this injury and its treatment using an administrative database might provide a different perspective.

The KSS 2011 Reflects Symptoms, Physical Activities, and Radiographic Grades in a Japanese Population

Naoya Taniguchi MD, Shuichi Matsuda MD, PhD, Takahisa Kawaguchi MS, Yasuharu Tabara PhD, Tome Ikezoe PhD, Tadao Tsuboyama MD, PhD, Noriaki Ichihashi PhD, Takeo Nakayama MD, PhD, Fumihiko Matsuda PhD, Hiromu Ito MD, PhD

Cultural and ethnic differences are present both in subjective and objective measures of patient health, but scoring systems do not always reflect these differences, and so validation of outcomes tools in different cultural settings is important. Recently, a revised version of The Knee Society Score(KSS 2011) was developed, but to our knowledge, the degree that this tool evaluates clinical symptoms, physical activities, and radiographic grades in the general Japanese population is not known.

Does Increased Topside Conformity in Modular Total Knee Arthroplasty Lead to Increased Backside Wear?

Ran Schwarzkopf MD, MSc, Richard D. Scott MD, Evan M. Carlson MSc, John H. Currier MSc

Modular metal-backed tibia components allow surgeons intraoperative flexibility. Although it is known that modular tibia components introduce the possibility for backside wear resulting from relative motion between the polyethylene insert and the tibial baseplate, it is not known to what degree variability in the conformity of the tibial polyethylene liner itself might contribute to backside wear.

Confirmation of Long-term In Vivo Bearing Mobility in Eight Rotating-platform TKAs

Michael T. LaCour BS, Adrija Sharma PhD, Christopher B. Carr PhD, Richard D. Komistek PhD, Douglas A. Dennis MD

Posterior-stabilized rotating-platform prostheses for TKAs were designed to improve contact mechanics at the femoral-polyethylene (PE) interface. Short-term followup studies have shown that the PE bearings rotate with respect to the tibia but might not necessarily track with the femur. It is important to know how kinematics in these designs change owing to long-term in vivo use.