A case is presented of arthralgia of the left knee associated with osteochondrosis of the tibial tuberosity (Osgood-Schlatter's disease). Orthopedic findings included normal active ranges of knee flexion and extension, but pain with passive flexion and extension movements. Radiographic findings included the presence of slight prominence of the soft tissue overlying the tibial tuberosity. Initially, management of this case consisted of conservative therapy to alleviate pain, inflammation and swelling. Subsequent treatments were designed to result in complete recovery from any discomfort in the knee joint/muscle/ligaments complex.