caa a22 4500 605455880 CHVBK 20210128100215.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00167-012-2289-7 doi (NATIONALLICENCE)springer-10.1007/s00167-012-2289-7 Accelerated degeneration of the discoid lateral meniscus after medial opening wedge high tibial osteotomy [Elektronische Daten] [Sae Kwon, Hong-Kyo Moon, Chul-Jun Choi, Seong-Ho Park, Jae-Jung Lee, Yong-Chan Kim, Young-Sik Park, Yong-Gon Koh] Purpose: This study was undertaken to report clinical outcomes after high tibial osteotomy (HTO) in patients with a discoid lateral meniscus and to determine (1) whether discoid lateral meniscus degeneration by magnetic resonance imaging (MRI) progresses after HTO and (2) whether this progression adversely affects clinical results. Methods: The records of 292 patients (292 knees) who underwent medial opening HTO were retrospectively reviewed, and discoid types and grades of lateral meniscus degeneration as determined by MRI were recorded preoperatively. Of the 292 patients, 17 (5.8%) had a discoid lateral meniscus, and postoperative MR images were obtained at least 2years after HTO for 15 of these 17 patients. Results: American Knee Society (AKS) pain, knee and function scores significantly improved in the 15 patients after surgery (p<0.001). Eight (53%) had an incomplete and 7 (47%) had a complete discoid lateral meniscus. By preoperative MRI, the distribution of meniscal degeneration was as follows: grade 1, 4 patients; grade 2, 7 patients; and grade 3, 4 patients. At the final follow-up, the distribution of degeneration was as follows: grade 1, 2 patients; grade 2, 5 patients; and grade 3, 8 patients. Two patients with grade 3 degeneration who did not undergo partial meniscectomy showed tear progression. Thus, 8 of the 15 patients (53%) experienced progressive discoid meniscal degeneration after HTO. Median AKS pain score was significantly lower in the progression group than in the non-progression group (40 vs 45, respectively). Conclusion: The results of this study suggest that increased load on the lateral compartment after HTO can accelerate discoid lateral meniscus degeneration by MRI and caution that when a discoid lateral meniscus is found by preoperative MRI, progressive degeneration may occur after HTO and clinical outcome may be adversely affected. Level of evidence: Therapeutic study, Level IV. Springer-Verlag Berlin Heidelberg, 2012 Discoid lateral meniscus nationallicence High tibial osteotomy nationallicence Degeneration of meniscus nationallicence Magnetic resonance imaging nationallicence Kwon Sae Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut Moon Hong-Kyo Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut Choi Chul-Jun Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut Park Seong-Ho Department of Radiology, Yonsei Sarang Hospital, Bucheon, Korea aut Lee Jae-Jung Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut Kim Yong-Chan Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut Park Young-Sik Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut Koh Yong-Gon Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/1(2015-01-01), 97-103 0942-2056 23:1<97 2015 23 167 https://doi.org/10.1007/s00167-012-2289-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-012-2289-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kwon Sae Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut NATIONALLICENCE 700 1- Moon Hong-Kyo Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut NATIONALLICENCE 700 1- Choi Chul-Jun Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut NATIONALLICENCE 700 1- Park Seong-Ho Department of Radiology, Yonsei Sarang Hospital, Bucheon, Korea aut NATIONALLICENCE 700 1- Lee Jae-Jung Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut NATIONALLICENCE 700 1- Kim Yong-Chan Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut NATIONALLICENCE 700 1- Park Young-Sik Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut NATIONALLICENCE 700 1- Koh Yong-Gon Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 49-3 Yeokgok-dong, Wonmi-gu, 420-100, Bucheon, Korea aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/1(2015-01-01), 97-103 0942-2056 23:1<97 2015 23 167