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This Article Full Text Full Text (PDF) All Versions of this Article: 32/3/612    most recent 0095399703258744v1 Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Request Reprints Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (8) Citing Articles via Google Scholar Google Scholar Articles by Kuroki, H. Articles by Nakamura, T. Search for Related Content PubMed PubMed Citation Articles by Kuroki, H. Articles by Nakamura, T. Related Collections Chondral/cartilage Animal studies Biomechanics

Mechanical Effects of Autogenous Osteochondral Surgical Grafting Procedures and Instrumentation on Grafts of Articular Cartilage

Hiroshi Kuroki, PT, MS^*, Yasuaki Nakagawa, MD^,, Koji Mori, PhD, Ken Ikeuchi, PhD and Takashi Nakamura, MD

From the ^* College of Medical Technology, Kyoto University, Kyoto, Japan, the Department of Orthopedic Surgery, Faculty of Medicine, Kyoto University, Kyoto, Japan, and the Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan

Address correspondence to Yasuaki Nakagawa, MD, Department of Orthopedic Surgery, Faculty of Medicine, Kyoto University, 54 Kawahara-Cho, Shogoin, Sakyo-Ku, Kyoto 606-8507, Japan (e-mail: ynaka{at}kuhp.kyoto-u.ac.jp).

Purpose: To analyze the mechanical effects of autogenous osteochondral grafting procedures on articular cartilage.

Methods: The intensity, duration, and interval (indexes of stiffness, surface irregularity, and thickness) of the cartilage were assessed in a porcine model using an ultrasonic measurement system. In 7 of 12 knees, 6-mm-diameter plugs were harvested from the donor knees and grafted into 5-mm recipient holes at 3 different points per knee (21 plugs). In the remaining 5 knees, 5-mm plugs were harvested and returned to their original position (28 plugs).

Results: No significant differences in the intensity, duration, and interval of the cartilage were observed with the plugs before harvesting and after grafting by the paired t test. The 3 indexes of the 6- and 5-mm plugs that were grafted correlated significantly with those before they were.

Conclusions: These results suggest that osteochondral graft surgery does not affect the stiffness, surface irregularity, and thickness of the cartilage of the plugs at time zero.

Key Words: osteochondral graft • ultrasound • cartilage • biomechanics

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