Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 436 articles


What Can Be Learned From Minimum 20-year Followup Studies of Knee Arthroplasty?

John J. Callaghan MD, Christopher T. Martin MD, Yubo Gao PhD, Andrew J. Pugely MD, Steve S. Liu MD, Devon D. Goetz MD, Scott S. Kelley MD, Richard C. Johnston MD

Long-term evaluation of knee arthroplasty should provide relevant information concerning the durability and performance of the implant and the procedure. Because most arthroplasties are performed in older patients, most long-term followup studies have been performed in elderly cohorts and have had low patient survivorship to final followup; the degree to which attrition from patient deaths over time in these studies might influence their results has been poorly characterized.

Knee Muscle Strength After Recent Partial Meniscectomy Does Not Relate to 2-year Change in Knee Adduction Moment

Michelle Hall MSc, Tim V. Wrigley MSc, Ben R. Metcalf BSc, Rana S. Hinman PhD, Alasdair R. Dempsey PhD, Peter M. Mills PhD, Flavia M. Cicuttini PhD, David G. Lloyd PhD, Kim L. Bennell PhD

Knee muscle weakness and a greater external knee adduction moment are suggested risk factors for medial tibiofemoral knee osteoarthritis. Knee muscle weakness and a greater knee adduction moment may be related to each other, are potentially modifiable, and have been observed after arthroscopic partial meniscectomy.

Risk Factors for the Development of Heterotopic Ossification After Knee Dislocation

Daniel B. Whelan MD, Andrew P. Dold MD, Tomce Trajkovski MD, Jas Chahal MD

Results of treatment for acute knee dislocations and multiligament knee injuries may be influenced by a multitude of patient- and injury-related factors, including neurologic function, vascular status, ipsilateral fractures, and joint stability. The development of heterotopic ossification (HO) may nullify any benefits of reconstruction, because it can cause stiffness and discomfort. Identifying factors associated with HO after knee dislocation may help identify patients who might benefit from prophylaxis.

Is Single-stage Revision According to a Strict Protocol Effective in Treatment of Chronic Knee Arthroplasty Infections?

Fares Sami Haddad FRCS (Tr&O), Mohamed Sukeik MRCSEd, Sulaiman Alazzawi MRCSEd

The increasing number of patients experiencing periprosthetic total knee arthroplasty (TKA) infections and the cost of treating them suggest that we seek alternatives to two-stage revision. Single-stage revision is a potential alternative to the standard two-stage procedure because it involves only one surgical procedure, so if it is comparably effective, it would be associated with less patient morbidity and lower cost.

Preoperative Pain and Function Profiles Reflect Consistent TKA Patient Selection Among US Surgeons

David C. Ayers MD, Wenjun Li PhD, Leslie Harrold MD, MPH, Jeroan Allison MD, MS, Patricia D. Franklin MD, MBA, MPH

As the number of primary total knee arthroplasties (TKAs) performed in the United States increases, policymakers have questioned whether the indications and timing of TKA have evolved so that surgery is offered earlier.

New Total Knee Arthroplasty Designs: Do Young Patients Notice?

Ryan M. Nunley MD, Denis Nam MD, Keith R. Berend MD, Adolph V. Lombardi MD, Douglas A. Dennis MD, Craig J. Della Valle MD, Robert L. Barrack MD

Although the volume of total knee arthroplasties (TKAs) performed in the United States continues to increase, recent reports have shown the percentage of patients who remain “unsatisfied” is as high as 15% to 30%. Recently, several newer implant designs have been developed to potentially improve patient outcomes.

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.