Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 450 articles


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.

Does Combined Intra- and Extraarticular ACL Reconstruction Improve Function and Stability? A Meta-analysis

Fernando Cury Rezende MD, Vinicius Ynoe Moraes MD, Ana Luiza Cabrera Martimbianco Bsc, Marcus Vinícius Luzo PhD, Carlos Eduardo Silveira Franciozi PhD, João Carlos Belloti PhD

ACL reconstruction aims to restore knee function and stability; however, rotational stability may not be completely restored by use of standard intraarticular reconstruction alone. Although individual studies have not shown the superiority of combined ACL reconstruction compared with isolated intraarticular reconstruction in terms of function and stability, biomechanical principles suggest a combined approach may be helpful, therefore pooling (meta-analyzing) the available randomized clinical studies may be enlightening.

Morbid Obesity: Increased Risk of Failure After Aseptic Revision TKA

Chad D. Watts MD, Eric R. Wagner MD, Matthew T. Houdek MD, David G. Lewallen MD, Tad M. Mabry MD

Patients with obesity are known to have a higher risk of complications after primary TKA; however, there is a paucity of data regarding the effects of obesity with revision TKAs.

The John Insall Award: No Functional Benefit After Unicompartmental Knee Arthroplasty Performed With Patient-specific Instrumentation: A Randomized Trial

Matthieu Ollivier MD, Sebastien Parratte MD, PhD, Alexandre Lunebourg MD, Elke Viehweger MD, PhD, Jean-Noel Argenson MD, PhD

Component alignment can influence implant longevity as well as perhaps pain and function after unicompartmental knee arthroplasty (UKA), but correct alignment is not consistently achieved. To increase the likelihood that good alignment will be achieved during surgery, smart tools such as robotics or patient-specific instrumentation (PSI) have been introduced.