MRI axial sequential T2 views of patient 1.

<p>Pre-treatment MRI scans of patient 1 (A [sequential image: 3/16], C [4/16], and E [5/16]) show retro-patellar signal changes (arrow) consistent with chondromalacia patellae (upper bone). At three months, post-treatment MRI scans of patient 1 (B [6/20], D [7/20], and F [8/20]) show changes (arrowhead) consistent with probable cartilage restoration on the patellae-femoral joint.</p

Pain measurements of patients 1 (A), 2 (B), and 3 (C).

<p>VAS is visual analog scale and T bars indicate standard deviations.</p

MRI axial sequential T2 views patient 3.

<p>Pre-treatment MRI scans of patient 3 (A [4/19], C [5/19], and E [6/19]) show retro-patellar signal changes (arrow) consistent with chondromalacia patellae along with medial meniscal maceration and cartilage thinning consistent with osteoarthritis. Post-treatment MRI scans at three months (B [5/20], D [6/20], and F [7/20]) show changes (arrowhead) consistent with probable cartilage restoration.</p

MRI axial sequential T2 views of patient 2.

<p>Pre-treatment MRI scans of patient 2 (A [16/24], C [17/24], E [18/24]) show retro-patellar signal changes (arrow) consistent with chondromalacia patellae (upper bone). At three months, post-treatment MRI scans of patient 2 (B [right; 4/20], D [5/20], and F [6/20]) show changes (arrowhead) consistent with probable cartilage restoration on the patellae-femoral joint.</p