Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 440 articles

Articles

Patients With Knee Osteoarthritis Have a Phenotype With Higher Bone Mass, Higher Fat Mass, and Lower Lean Body Mass

Magnus K. Karlsson MD, PhD, Håkan Magnusson MD, PhD, Maria Cöster MD, Caroline Karlsson MD, PhD, Björn E. Rosengren MD, PhD

Although knee osteoarthritis (OA) is common, its etiology is poorly understood. Specifically, it is not known whether knee OA is associated with abnormal anthropometric and musculoskeletal characteristics known to be associated with OA in general. We recently studied this topic for patients with hip arthritis; however, it is important to evaluate it for knee OA separately, because there are reports indicating that patients with primary OA in different joints may have a different phenotype.

Do Laterally Wedged Insoles or Valgus Braces Unload the Medial Compartment of the Knee in Patients With Osteoarthritis?

Tijs Duivenvoorden MD, Tom M. Raaij MD, PhD, Herwin L. D. Horemans PhD, Reinoud W. Brouwer MD, PhD, P. Koen Bos MD, PhD, Sita M. A. Bierma-Zeinstra PhD, Jan A. N. Verhaar MD, PhD, Max Reijman PhD

The results of conservative treatment of knee osteoarthritis (OA) are generally evaluated in epidemiological studies with clinical outcome measures as primary outcomes. Biomechanical evaluation of orthoses shows that there are potentially beneficial biomechanical changes to joint loading; however, evaluation in relation to clinical outcome measures in longitudinal studies is needed.

Does Sequence of Graft Tensioning Affect Outcomes in Combined Anterior and Posterior Cruciate Ligament Reconstructions?

Sung-Jae Kim MD, PhD, Sung-Hwan Kim MD, Min Jung MD, Jong-Min Kim MD, Se-Won Lee MD

Controversy persists regarding the protocol for tensioning and securing the grafts in one-stage reconstruction of combined anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) injuries. Many authors have reported stability examinations and functional results after reconstruction for this relatively rare injury, and the best sequence for tensioning the grafts is not known.

A New Method for Calculating Femoral Anterior Cortex Point Location and Its Effect on Component Sizing and Placement

Mohamed R. Mahfouz PhD, Emam ElHak Abdel Fatah PhD, Lyndsay Bowers MSc, Giles Scuderi MD

Variation in anterior femoral cortex morphology can cause improper component placement and alignment. When surgical inaccuracies occur, the mechanical properties of the distal femur may be altered, which could result in lower surgical success rates and an increased chance of postoperative complications.

Comorbidities in Patients Undergoing Total Knee Arthroplasty: Do They Influence Hospital Costs and Length of Stay?

Andrew J. Pugely MD, Christopher T. Martin MD, Yubo Gao PhD, Daniel A. Belatti BS, John J. Callaghan MD

Increasing national expenditures and use associated with TKA have resulted in pressure to reduce costs through various reimbursement cuts. However, within the arthroplasty literature, few studies have examined the association of medical comorbidities on resource use and length of stay after joint arthroplasty.

Collateral Ligament Laxity in Knees: What Is Normal?

Kamal Deep MBBS, MS, DNB, FRCS, MCh Orth, FRCS(Orth)

Proper alignment and balancing of soft tissues of the knee are important goals for TKA. Despite standardized techniques, there is no consensus regarding the optimum amount of collateral ligament laxity one should leave at the end of the TKA.

High Tibial Valgus Osteotomy: Closing, Opening or Combined? Patellar Height as a Determining Factor

Oliver Portner BSc, MDCM, FRCSC

According to the literature, closing and opening wedge high tibial valgus osteotomies can raise or lower the patella, and diffèrent methods of patella height measurement show similarly conflicting results. Clarification of this was thought to be important because there is much literature describing morbidity secondary to patella alta or patella infera (baja). Effects on tibial slope and patellar tendon length are not well delineated and the influence of sex and age is unknown.

Patient Activity After TKA Depends on Patient-specific Parameters

Cornelia Lützner Dipl-Päd, Stephan Kirschner Dr med, PD, Jörg Lützner Dr med, PD

Most patients expect an improvement of walking ability and an increase in activity levels after TKA. Unfortunately, few studies report qualitative and quantitative activity improvements after TKA.

Infrapatellar Saphenous Neuralgia After TKA Can Be Improved With Ultrasound-guided Local Treatments

Steven Clendenen MD, Roy Greengrass MD, Joseph Whalen MD, PhD, Mary I. O’Connor MD

Current opinion suggests that in some patients, chronic pain after total knee arthroplasty (TKA) has a neuropathic origin. Injury to the infrapatellar branch of the saphenous nerve (IPSN) has been implicated as a cause of medial knee pain; however, local treatments for this condition remain controversial.

Does Advanced Cryotherapy Reduce Pain and Narcotic Consumption After Knee Arthroplasty?

Emmanuel Thienpont MD, MBA

Cryotherapy has been used to enhance recovery after orthopaedic surgery. Several cooling devices are available but few can guarantee a fixed temperature during a prolonged time and therefore have been criticized. The arrival of new advanced cryotherapy devices made it possible to test the effect of prolonged cooling on rehabilitation after joint replacement.