2015 ISAKOS Biennial Congress ePoster #1505

Chronological Changes of the Cartilage in Recipient Sites and Their Mirror Areas on Second-Look Imaging After Mosaicplasty

Yasuaki Nakagawa, MD, Kyoto, Kyoto JAPAN
Shogo Mukai, MD, Kyoto JAPAN
Hiromitsu Yabumoto, MD, Kyoto JAPAN
Eri Tarumi, MD, Kyoto JAPAN
Ryuzo Arai, MD, Kyoto JAPAN
Takahiko Saji, MD, Kyoto JAPAN
Takashi Nakamura, MD, Kyoto JAPAN

Department of Orthopaedic Surgery, National Hospital Organization, Kyoto Medical Center, Kyoto, Kyoto, JAPAN

FDA Status Not Applicable

Summary: Chlonological changes of the cartilage after mosaicplasty




It has been reported that the short-term results of mosaicplasty are good, but there have been no reports of the chronological changes of the cartilage in the recipient sites and their mirror areas for mosaicplasty. The purpose of this study was to examine the chronological changes of the cartilage in the recipient sites and their mirror areas using second-look imaging.


There were 33 cases (37 knees 40 sites) that underwent mosaicplasty and second-look arthroscopy in our hospital over a 7 year periods. There were 14 men and 19 women (12 right knees and 25 left knees). Their recipient sites were 3 patellas,7 patellar grooves,21 medial femoral condyles, and 9 lateral femoral condyles. The mean age at operation was 38.3 years, the mean period from mosaicplasty to second-look arthroscopy was 15.4 months, and the mean follow-up period was 34.9 months (range 24-65 months). A smooth surface in the recipient sites on second-look arthroscopy was defined as Group G, while fibrillation or an irregular surface was defined as Group B. Deterioration in the mirror area on second-look arthroscopy was defined as Group W, and improvement or no change was defined as Group U.


There were 30 cases in Group G and 10 cases in Group B, with 37 cases in Group U and 3 cases in Group W. The age at operation was significantly older in group G than in Group B. There was a significant correlation between Group G and U. The clinical outcome was significantly worse in Group W than in Group U


If a smooth surface was seen in the recipient site during second-look, the cartilage degeneration in their mirror area did not become worse in mosaicplasty.