Department of Orthopaedic Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Republic of Korea.
Knee Surg Sports Traumatol Arthrosc. 2021 Apr;29(4):1197-1205. doi: 10.1007/s00167-020-06120-3. Epub 2020 Jul 12.
To investigate degenerative morphological changes in meniscus allograft after lateral meniscus allograft transplantation (MAT) based on extrusions.
Ninety-one patients who underwent lateral MAT were divided into extruded and non-extruded groups. Serial magnetic resonance imaging scans obtained 6 weeks, 1 year, and at the last follow-up (midterm, 3-7 years) post-surgery were evaluated retrospectively. Degenerative morphological changes at each time point in each group were compared using the postoperative meniscal width, thickness, and intrameniscal signal intensity (IMSI) at the anterior horn, mid-body, and posterior horn. The Lysholm scores and meniscal tears based on graft extrusion were also investigated.
The mean age was 33.7 ± 11.1 years (64 men and 27 women). Fifty-three (58%) and 38 knees (42%) were classified into the non-extruded and extruded groups, respectively. The overall meniscal width of the mid-body decreased from 9.6 ± 1.3 to 6.5 ± 1.2 mm (p < 0.01), and IMSI of mid-body was increased from 1.2 ± 0.1 to 1.7 ± 0.1 (p < 0.01) during midterm follow-ups. No significant differences were observed between the meniscal width, thickness, and IMSI at the anterior horn (n.s.), mid-body (n.s.), and posterior horn (n.s.) of the two groups during the midterm follow-ups. The incidence of meniscus tears and Lysholm scores did not differ significantly between the groups during midterm follow-ups.
The overall meniscus width of mid-body decreased while the relative IMSI of mid-body increased during midterm follow-ups after lateral MAT. Meniscal allograft extrusions did not influence postoperative changes in meniscus width, thickness, and relative intrameniscal signal intensity.
Level III.
基于挤压，研究外侧半月板移植（MAT）后半月板同种异体移植物的退行性形态变化。
将 91 例接受外侧 MAT 的患者分为挤压组和非挤压组。回顾性分析术后 6 周、1 年和末次随访（中期，3-7 年）的连续磁共振成像扫描。比较两组各时间点的术后半月板宽度、厚度和前角、体中部和后角的半月板内信号强度（IMSI）的退行性形态变化。还研究了基于移植物挤压的 Lysholm 评分和半月板撕裂。
平均年龄为 33.7±11.1 岁（64 名男性和 27 名女性）。53 例（58%）和 38 例（42%）膝关节分别归入非挤压组和挤压组。体中部的整体半月板宽度从 9.6±1.3 减少到 6.5±1.2mm（p<0.01），体中部的 IMSI 从 1.2±0.1 增加到 1.7±0.1（p<0.01）在中期随访期间。在中期随访期间，两组的前角（n.s.）、体中部（n.s.）和后角（n.s.）的半月板宽度、厚度和 IMSI 无显著差异。在中期随访期间，两组的半月板撕裂和 Lysholm 评分发生率无显著差异。
在外侧 MAT 后中期随访期间，体中部的整体半月板宽度减小，而体中部的相对 IMSI 增加。半月板同种异体移植物的挤压并不影响术后半月板宽度、厚度和相对半月板内信号强度的变化。
三级。
