RT Journal Article SR Electronic T1 Osteoarthritis models after anterior cruciate ligament resection and medial meniscectomy in rats. A histological and immunohistochemical study JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1796 OP 1802 VO 28 IS 12 A1 Piskin, Ahmet A1 Gulbahar, Mustafa Y. A1 Tomak, Yilmaz A1 Gulman, Birol A1 Hokelek, Murat A1 Kerimoglu, Servet A1 Koksal, Bulent A1 Alic, Taner A1 Kabak, Yonca B. YR 2007 UL http://smj.org.sa/content/28/12/1796.abstract AB OBJECTIVE: To compare the amount of degeneration based on the time spent, using 2 different methods of surgically induced osteoarthritis (OA) that frequently used in treating OA.METHODS: We undertook this research in Ondokuz Mayis University, Surgical Research Center between April 2006 and July 2006. In this study, 55 rats were used, 7 as the control group, and 12 in each of 4 groups. We compared the amount of OA formed by the medial meniscectomy (MMx) and anterior cruciate ligament transection (ACLT) at 8 and 16 weeks according to the Modified Mankin Score and histologically and immunohistochemically due to their response to Matrix metalloproteinase 13 expression (MMP13).RESULTS: We observed the highest degeneration in the MMx model at 8 weeks, and this situation continued until 16 weeks. However, the degeneration in the ACLT model was lower at 8 weeks compared with the MMx group, however, it reached the same amount as the MMX group at 16 weeks.CONCLUSION: The OA model formed by the ACLT method was better than the MMx model when degeneration and time were taken into consideration and should be used when researching drugs on an experimental basis in OA.