Right knee pain. Decreased range of motion.IMAGE ACQUISITIONS: Nonenhanced CT of the right knee There are tiny osteophytes and small cysts in the tibial plateau indicating mild osteoarthritis. A tiny, 3 mm, density projects just above the central aspect of the tibial plateau and could conceivably represent a loose body but more likely represents a small focus of calcification in the distal fibers of the anterior cruciate ligament. Please note, the integrity of the menisci and ligaments can be better assessed with MRI but the posterior cruciate ligament is well seen and appears intact. The collateral ligaments likewise appear grossly intact. The anterior cruciate ligament is largely indistinct but we cannot ascertain if this is abnormal on this study. The extensor mechanism is intact. There is a small amount of fluid within the semimembranosus/gastrocnemius bursa (Baker's cyst).
Mild degenerative changes as described above. If further imaging evaluation is clinically warranted, MRI can be considered.