ORLANDO — Lateral unicompartmental knee replacement, when used in patients who meet certain key indications, such as having isolated lateral bone-on-bone arthritis, can be a viable treatment option for isolated lateral compartment disease, based on data presented at the Current Concepts in Joint Replacement Winter Meeting.

Michael E. Berend , MD, of Midwest Center for Joint Replacement in Indianapolis, said the isolated bone-on-bone diagnosis is often missed “as it is a disease of flexion.” Therefore, he recommended getting flexed posterior-anterior views in patients who are potential candidates for lateral partial knee replacement (PKR), which he described as an emerging procedure.