PMID- 36064155 OWN - NLM STAT- MEDLINE DCOM- 20230109 LR - 20230207 IS - 1526-3231 (Electronic) IS - 0749-8063 (Linking) VI - 39 IP - 2 DP - 2023 Feb TI - Mosaicplasty With High Tibial Osteotomy for Knee Subchondral Insufficiency Fracture Had Better Magnetic Resonance Observation of Cartilage Repair Tissue Scores With Less Bone Marrow Edema and Better Plug Union and Less Plug Necrosis Compared With Mosaicplasty Alone. PG - 337-346 LID - S0749-8063(22)00479-0 [pii] LID - 10.1016/j.arthro.2022.07.020 [doi] AB - PURPOSE: To determine the magnetic resonance imaging (MRI) findings after mosaicplasty (MOS) for knee subchondral insufficiency fracture (SIFK), and to analyze the relationship between MRI findings and clinical outcomes. METHODS: We retrospectively reviewed the cases of consecutive patients who underwent MOS for SIFK with/without high tibial osteotomy (HTO) between January 1998 and December 2015. The MRI findings at 12 months after the surgery were assessed by the modified magnetic resonance observation of cartilage repair tissue (MOCART) score to determine the degree of bone marrow edema (BME), plug union, and plug necrosis. The clinical outcomes were assessed by Lysholm score to clarify the minimal clinically important difference (MCID) and patient acceptable symptom state analysis. RESULTS: In total, 58 patients (17 men and 41 women) were enrolled in this study. Among them, 30 knees were treated by MOS alone and 28 knees were treated by MOS with HTO. The MOCART scores of patients who received MOS alone were significantly lower in BME score (P = .0060), plug union score (P = .0216), and in plug necrosis score (P = .0326) than patients who received MOS with HTO. BME lesion was less likely to persist among elderly (odds ratio 1.20, P = .0248) and female (OR 41.8, P = .0118) patients. The MCID of Lysholm score was 6.6 in MOS alone and 8.4 in MOS with HTO cases, but there were no significant association between MRI findings and the postoperative Lysholm score. CONCLUSIONS: The MOS with HTO cases had better MOCART scores with less BME, better plug union, and less plug necrosis compared with MOS alone cases. Female and older patients had better resolution of BME, but there was no significant correlation between MRI findings and the postoperative Lysholm score. All cases in both groups showed improvement of Lysholm score exceeding MCID; thus, MOS may be effective as a joint preserving surgery for SIFK. LEVEL OF EVIDENCE: Level IV, clinical case series. CI - Copyright (c) 2022 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved. FAU - Mukai, Shogo AU - Mukai S AD - Department of Orthopedic Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan. Electronic address: shomu67d@gmail.com. FAU - Nakagawa, Yasuaki AU - Nakagawa Y AD - Department of Orthopedic Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan. FAU - Nishitani, Kohei AU - Nishitani K AD - Department of Orthopedic Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan; Department of Orthopedic Surgery, Kyoto University, Kyoto, Japan. FAU - Sakai, Sayako AU - Sakai S AD - Department of Orthopedic Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan. FAU - Nakamura, Ryouta AU - Nakamura R AD - Department of Orthopedic Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan. FAU - Takahashi, Motoi AU - Takahashi M AD - Department of Orthopedic Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan. LA - eng PT - Journal Article DEP - 20220903 PL - United States TA - Arthroscopy JT - Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association JID - 8506498 SB - IM CIN - Arthroscopy. 2023 Feb;39(2):347-348. PMID: 36604001 MH - Male MH - Humans MH - Female MH - Aged MH - Retrospective Studies MH - Bone Marrow MH - *Fractures, Stress MH - Treatment Outcome MH - Knee Joint/surgery MH - Magnetic Resonance Imaging MH - *Knee Fractures MH - Magnetic Resonance Spectroscopy MH - Cartilage MH - Necrosis/surgery MH - Osteotomy/methods MH - Edema/etiology MH - *Osteoarthritis, Knee/surgery EDAT- 2022/09/06 06:00 MHDA- 2023/01/10 06:00 CRDT- 2022/09/05 19:28 PHST- 2022/01/06 00:00 [received] PHST- 2022/07/20 00:00 [revised] PHST- 2022/07/28 00:00 [accepted] PHST- 2022/09/06 06:00 [pubmed] PHST- 2023/01/10 06:00 [medline] PHST- 2022/09/05 19:28 [entrez] AID - S0749-8063(22)00479-0 [pii] AID - 10.1016/j.arthro.2022.07.020 [doi] PST - ppublish SO - Arthroscopy. 2023 Feb;39(2):337-346. doi: 10.1016/j.arthro.2022.07.020. Epub 2022 Sep 3.