Contact Mechanics of the Replaced and Remaining Compartments in Unicompartmental Knee Arthroplasty


Carl Imhauser, PhD, Biomechanics Department
Geoffrey H. Westrich, MD, Arthroplasty Service

Project Description

Unicompartmental arthroplasty of the medial compartment of the knee can alleviate pain and improve function in patients suffering from medial knee osteoarthritis (OA). However, progression of OA in the remaining lateral compartment is a common cause for failure of this treatment. The long-term objective of this study is to identify mechanical factors that may be associated with progression of OA in the lateral compartment with unicompartmental knee arthroplasty. We hypothesize that replacement of the medial compartment alters the magnitude and location of contact stresses in the lateral compartment. We will test this hypothesis through controlled mechanical loading of cadaver knee joints using robotic technology while simultaneously measuring contact stresses at the tibiofemoral joint using a specially-designed stress transducer. By participating in this project, the summer student will enhance their knowledge of OA treatment, knee joint anatomy, biomechanics, orthopaedic surgery and research study design by participating in specimen imaging, dissection and testing, assisting the clinician performing the surgical procedures, and analyzing and interpreting data.

This Position Has Been Filled.