Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Knee 443 articles


Implant Survival, Knee Function, and Pain Relief After TKA: Are There Differences Between Men and Women?

Mary I. O’Connor MD

As efforts continue to improve the results of TKA, the potential influence of sex and gender on long-term survival of implants, knee function, pain relief, and patient satisfaction remains relevant, particularly given the increased incidence of osteoarthritis of the knee in women and reports that women derive equal benefit from TKA.

Do We Need Gender-specific Total Joint Arthroplasty?

Aaron J. Johnson MD, Christopher R. Costa MD, Michael A. Mont MD

Gender-specific differences in knee and hip anatomy have been well documented. Although it has been accepted these differences exist, there is controversy regarding if and how these differences should be addressed with gender-specific implant designs.

Clinical Cartilage Restoration: Evolution and Overview

Jack Farr MD, Brian Cole MD, MBA, Aman Dhawan MD, James Kercher MD, Seth Sherman MD

Clinical cartilage restoration is evolving, with established and emerging technologies. Randomized, prospective studies with adequate power comparing the myriad of surgical techniques used to treat chondral injuries are still lacking and it remains a challenge for the surgeon treating patients to make evidence-based decisions.

Breakout Session: Gender Disparities in Knee Osteoarthritis and TKA

Mary I. O’Connor MD, Elizabeth Gerken Hooten ScD, MSPH, CPH

Biologically derived (sex-based) and behaviorally influenced (gender-based) disparities exist in knee osteoarthritis and treatment with TKA.

The Surgical Apgar Score in Hip and Knee Arthroplasty

Thomas H. Wuerz MD, MSc, Scott E. Regenbogen MD, MPH, Jesse M. Ehrenfeld MD, Henrik Malchau MD, PhD, Harry E. Rubash MD, Atul A. Gawande MD, MPH, David M. Kent MD, MS

A 10-point Surgical Apgar Score, based on patients’ estimated blood loss, lowest heart rate, and lowest mean arterial pressure during surgery, was developed to rate patients’ outcomes in general and vascular surgery but has not been tested for patients having orthopaedic surgery.

Persistent Hindfoot Valgus Causes Lateral Deviation of Weightbearing Axis after Total Knee Arthroplasty

Arun Mullaji FRCS Ed, MCh Orth, MS Orth, Gautam M. Shetty MS Orth

The weightbearing axis of the limb goes from the pelvis to the ground and includes the hindfoot. However, the influence of hindfoot alignment on mechanical axis and overall limb alignment after TKA is unclear.

Factors Influencing Health-related Quality of Life after TKA in Patients who are Obese

Montserrat Nuñez PhD, Lluis Lozano PhD, Esther Nuñez PhD, Josep-Maria Segur PhD, Sergi Sastre PhD

Although the health-related quality of life (HRQL) for patients who are obese seems to improve after TKA, the magnitude of improvement and the associated factors remain controversial. We previously found body mass index was not associated with changes in HRQL after TKA.

Is Minimally Invasive Total Knee Arthroplasty Associated with Lower Costs Than Traditional TKA?

Jason C. King MD, MPH, Paul A. Manner MD, Daniel L. Stamper PA-C, Douglas C. Schaad PhD, Seth S. Leopold MD

Studies of minimally invasive surgery (MIS) approaches to TKA have shown decreased postoperative pain, earlier return to function, and shorter lengths of stay in the hospital. However, it is unclear whether these differences translate into decreased costs or charges associated with care.

Continuous Infusion of UHMWPE Particles Induces Increased Bone Macrophages and Osteolysis

Pei-Gen Ren DVM, PhD, Afraaz Irani BS, Zhinong Huang MD, PhD, Ting Ma MD, MSc, Sandip Biswal MD, Stuart B. Goodman MD, PhD

Aseptic loosening and periprosthetic osteolysis resulting from wear debris are major complications of total joint arthroplasty. Monocyte/macrophages are the key cells related to osteolysis at the bone-implant interface of joint arthroplasties. Whether the monocyte/macrophages found at the implant interface in the presence of polyethylene particles are locally or systemically derived is unknown.

Effects of a Knee Extension Constraint Brace on Lower Extremity Movements after ACL Reconstruction

Christopher J. Stanley MS, R. Alexander Creighton MD, Michael T. Gross PT, PhD, FAPTA, William E. Garrett MD, PhD, Bing Yu PhD

Patients have high reinjury rates after ACL reconstruction. Small knee flexion angles and large peak posterior ground reaction forces in landing tasks increase ACL loading.