Male 47 years old; Reason: Evaluate patella for chondral damage vs subchondral changes, s/p left knee microfracture October 2013. History: Left knee pain MENISCI: The medial and lateral menisci appear intact.ARTICULAR CARTILAGE AND BONE: Again seen is mild irregularity of the subchondral bone of the lateral patellar facet, likely representing the site prior microfracture surgery. There is less bone marrow edema at the microfracture site, with new bone formation within the defect. The overlying cartilage appears slightly thinned, with a tiny partial thickness defect (series 4, image 6) also appearing similar to the prior study accounting for technical differences. No definite fluid-filled full-thickness defect is seen. The remainder of the articular cartilage of the patella is intact. The articular cartilage of the trochlea subjectively appears slightly thinned, without fluid filled full thickness defect seen. No fluid-filled full-thickness cartilage defect is seen elsewhere. Small intra-articular osteophytes are noted along the lateral femoral condyle, which are new. LIGAMENTS: The cruciate and collateral ligaments are intact.EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1. Postoperative changes of a patellar microfracture surgery, as described above, with overlying tiny partial thickness cartilage defect, similar to the prior study, which may be of no clinical significance.2. Small intra-articular osteophytes along the lateral femoral condyle.3. Removal of the previously seen intra-articular loose bodies.