Arthritis Clinic and Research Center, Peking University People's Hospital, Beijing, China.
Beijing Longfu Hospital, Beijing, China.
Cartilage. 2022 Jul-Sep;13(3):19476035221114242. doi: 10.1177/19476035221114242.
To perform conventional, morphological, and T2 mapping compositional MRI imaging to assess the cartilage degeneration and osteoarthritic progression in patients with medial meniscus posterior root tears (MMPRTs) who underwent trans-posterior cruciate ligament (PCL) all-inside repair or partial meniscectomy.
Patients with MMPRTs after trans-PCL all-inside repair (group AR) or partial meniscectomy (group PM) between 2015 and 2018 were retrospectively identified. Preoperative and postoperative conventional MRI were collected to assess medial meniscus extrusion (MME) and the whole-organ magnetic resonance imaging score (WORMS). Postoperative morphological MRI and T2 mapping compositional MRI were collected to evaluate the quantitative cartilage thickness/volume and cartilage composition.
The final cohort consisted of 21 patients in group AR and 22 patients in group PM, with no differences in demographic data and baseline patient characteristics between the 2 groups. Group AR demonstrated less progression of articular cartilage wear ( 0.05) and decreased meniscal extrusion ( = 0.008) than group PM at the final follow-up. In addition, group AR demonstrated less extracellular matrix degeneration in the cartilage subregion of the medial compartment ( 0.05) than group PM with lower T2 relaxation times in the superficial layer of the articular cartilage.
Trans-PCL all-inside repair of MMPRTs could delay the initial cartilage deterioration and morphological cartilage degeneration compared with partial meniscectomy. However, the amount of residual meniscal extrusion is clinically important, and an improved root repair fixation method should be investigated.
通过常规、形态学和 T2 映射成分 MRI 成像来评估内侧半月板后根撕裂（MMPRT）患者的软骨退变和骨关节炎进展，这些患者接受了经后交叉韧带（PCL）全内修复或部分半月板切除术。
回顾性地确定了 2015 年至 2018 年间接受经 PCL 全内修复（AR 组）或部分半月板切除术（PM 组）的 MMPRT 患者。收集术前和术后常规 MRI 以评估内侧半月板突出（MME）和全器官磁共振成像评分（WORMS）。术后形态学 MRI 和 T2 映射成分 MRI 用于评估定量软骨厚度/体积和软骨成分。
最终队列包括 AR 组的 21 名患者和 PM 组的 22 名患者，两组患者的人口统计学数据和基线患者特征无差异。与 PM 组相比，AR 组在最终随访时关节软骨磨损的进展较小（ = 0.05），半月板突出程度较低（ = 0.008）。此外，与 PM 组相比，AR 组内侧间室软骨亚区的细胞外基质退变较少（ = 0.05），关节软骨浅层的 T2 弛豫时间较低。
与部分半月板切除术相比，MMPRT 的经 PCL 全内修复可延迟初始软骨退变和形态学软骨退变。然而，残留半月板突出的程度具有临床意义，应研究改进的根修复固定方法。
