Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 433 articles


The Knee Society Short Form Reduces Respondent Burden in the Assessment of Patient-reported Outcomes

Giles R. Scuderi MD, Alla Sikorskii PhD, Robert B. Bourne MD, Jess H. Lonner MD, James B. Benjamin MD, Philip C. Noble PhD

The patient’s own evaluation of function and satisfaction is a fundamental component of assessing outcomes after total knee arthroplasty (TKA). The new Knee Society Knee Score was introduced in 2012 and has been shown to be a valid and reliable instrument for measuring the outcome of TKA. This score combines an objective, physician-derived component and a patient-reported component to characterize the expectations, satisfaction, and functional activities of diverse lifestyles of contemporary patients undergoing TKA. However, in the routine clinical setting, the administration and scoring of outcome measures is often resource-intensive, as the expenditure of time and budget for outcome measurement increase with the length and complexity of the instrument used, and so a short-form assessment can help to reduce the burden the assessment of outcomes.

What Is the Role for Patelloplasty With Gullwing Osteotomy in Revision TKA?

Jeremy M. Gililland MD, Presley Swann MD, Christopher E. Pelt MD, Jill Erickson PA, Nadia Hamad MSc, ATC, Christopher L. Peters MD

Management of the patella in revision total knee arthroplasty (TKA) is challenging as a result of the deficient or unusable bone stock for patellar resurfacing that is frequently encountered. Options proposed in this setting include various patelloplasty procedures, patellectomy, and special patellar components. We sought to better define the role and results of one patelloplasty procedure, the gullwing osteotomy, used in revision TKA.

What Are the Prognostic Factors for Radiographic Progression of Knee Osteoarthritis? A Meta-analysis

Alex N. Bastick MD, MSc, Janneke N. Belo MD, PhD, Jos Runhaar PhD, Sita M. A. Bierma-Zeinstra PhD

A previous systematic review on prognostic factors for knee osteoarthritis (OA) progression showed associations for generalized OA and hyaluronic acid levels. Knee pain, radiographic severity, sex, quadriceps strength, knee injury, and regular sport activities were not associated. It has been a decade since the literature search of that review and many studies have been performed since then investigating prognostic factors for radiographic knee OA progression.

Surface Damage Is Not Reduced With Highly Crosslinked Polyethylene Tibial Inserts at Short-term

Tong Liu MD, Christina Esposito PhD, Marcella Elpers BS, Timothy Wright PhD

Highly crosslinked ultrahigh-molecular-weight polyethylene (XLPE) has been shown to reduce wear in hip arthroplasty, but the advantages over conventional polyethylene (PE) in total knee arthroplasty (TKA), if any, remain unclear.

Fixator-assisted Technique Enables Less Invasive Plate Osteosynthesis in Medial Opening-wedge High Tibial Osteotomy: A Novel Technique

Dong Hoon Lee MD, PhD, Keun Jung Ryu MD, Hae Hwa Kim MD, PhD, Sahyun Soung MD, Soowan Shin BS

Opening-wedge high tibial osteotomy is a well-established procedure in the management of medial osteoarthritis of the knee and correction of proximal tibia vara. Recently, surgical approaches using less invasive plate osteosynthesis have been used with the goal of minimizing complications from more extensive soft tissue exposures. However, to our knowledge, less invasive fixator-assisted plate osteosynthesis has not been tested in the setting of opening-wedge high tibial osteotomy.

Tantalum Cones Provide Durable Mid-term Fixation in Revision TKA

Ivan Martino MD, Vincenzo Santis MD, Peter K. Sculco MD, Rocco D’Apolito MD, Joseph B. Assini MD, Giorgio Gasparini MD

Multiple studies have reported favorable short-term outcomes using tantalum cones to reconstruct massive bone defects during revision TKA. However, longer-term followup is needed to determine the durability of these reconstructions.

Low Albumin Levels, More Than Morbid Obesity, Are Associated With Complications After TKA

Charles L. Nelson MD, Nabil M. Elkassabany MD, MSCE, Atul F. Kamath MD, Jiabin Liu MD, PhD

Morbid obesity and malnutrition are thought to be associated with more frequent perioperative complications after TKA. However, morbid obesity and malnutrition often are co-occurring conditions. Therefore it is important to understand whether morbid obesity, malnutrition, or both are independently associated with more frequent perioperative complications. In addition, assessing the magnitude of an increase in complications and whether these complications are major or minor is important for both conditions.

Knee Society Award Papers Are Highly Cited Works

Tommy P. Mroz, Henry D. Clarke MD, Yu-Hui H. Chang PhD, Giles R. Scuderi MD

Since 1993, The Knee Society has presented three annual awards recognizing the best research papers presented at the annual meetings. To date, no quantitative evaluation has determined whether the selection process identifies the most meritorious papers based on subsequent citations. In the absence of validation of this process, it is unclear whether the journal readership should view the award-winning papers as those with potentially greater impact for the specialty.

Arthroscopic Transplantation of Synovial Stem Cells Improves Clinical Outcomes in Knees With Cartilage Defects

Ichiro Sekiya MD, PhD, Takeshi Muneta MD, PhD, Masafumi Horie MD, PhD, Hideyuki Koga MD, PhD

Transplantation of mesenchymal stem cells (MSCs) is one possible strategy to achieve articular cartilage repair. We previously reported that synovial MSCs were highly proliferative and able to undergo chondrogenesis. We also found that placing a suspension of synovial MSCs on a cartilage defect for 10 minutes promoted cartilage repair in rabbit and pig models. However, the in vivo efficacy of this approach has not been tested clinically.

Subchondral Calcium Phosphate is Ineffective for Bone Marrow Edema Lesions in Adults With Advanced Osteoarthritis

Dipal Chatterjee MD, Alan McGee MD, Eric Strauss MD, Thomas Youm MD, Laith Jazrawi MD

Injury to subchondral bone is associated with knee pain and osteoarthritis (OA). A percutaneous calcium phosphate injection is a novel approach in which subchondral bone marrow edema lesions are percutaneously injected with calcium phosphate. In theory, calcium phosphate provides structural support while it is gradually replaced by bone. However, little clinical evidence supports the efficacy of percutaneous calcium phosphate injections.