Yoon Kyoung Ho, Song Sang Jun, Lee Hee Sung, Park Cheol Hee
Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Republic of Korea.
Department of Medicine, Graduate School, Kyung Hee University, Seoul, Republic of Korea.
Orthop J Sports Med. 2020 Feb 27;8(2):2325967120904328. doi: 10.1177/2325967120904328. eCollection 2020 Feb.
Meniscal allograft transplant requires precise matching of the size of the allograft with the dimensions of the recipient knee. Estimation of contralateral meniscal size on magnetic resonance imaging (MRI) has been considered the ideal method to measure menisci before transplant. We questioned whether a contralateral intact meniscus with meniscal injury in the opposite compartment could be used as a reference to determine allograft size. Our question was derived from knowledge of meniscal injury influencing structures of the opposite compartment of the knee, including the meniscus.
To compare meniscal dimensions between intact meniscus with meniscal injury in the opposite compartment and normal meniscus with a normal opposite compartment.
Cross-sectional study; Level of evidence, 3.
This observational, cross-sectional study was performed between 2016 and 2017. The control group consisted of 200 knees with normal medial and lateral menisci. The medial intact group consisted of 150 cases of medial intact meniscus with injured lateral meniscus, and the lateral intact group consisted of 150 cases of lateral intact meniscus with injured medial meniscus. All patients were male. Mean age, height, and weight did not differ among groups. We investigated meniscal dimensions on MRI, including anteroposterior and mediolateral lengths, distance between the anterior and posterior horns (AHPH distance), and widths and heights of the anterior and posterior horns and midbody.
Most medial meniscal dimensions were similar between the control and medial intact groups, but the AHPH distance was smaller in the medial intact group ( < .001). Likewise, most lateral meniscal dimensions were similar between the control and lateral intact groups, but the AHPH distance was smaller in the lateral intact group ( < .001).
Most dimensions of the intact meniscus with meniscal injury in the opposite compartment were similar to those of the normal meniscus with normal opposite compartment. Measuring the dimensions of the contralateral intact meniscus with meniscal injury in the opposite compartment on MRI can be an appropriate method to determine meniscal allograft size.
半月板同种异体移植需要将同种异体移植物的大小与受体膝关节的尺寸精确匹配。在磁共振成像（MRI）上估计对侧半月板大小被认为是移植前测量半月板的理想方法。我们质疑对侧半月板完整但对侧间室存在半月板损伤的情况是否可作为确定同种异体移植物大小的参考。我们的问题源于了解到半月板损伤会影响膝关节对侧间室的结构，包括半月板。
比较对侧间室存在半月板损伤的完整半月板与对侧间室正常的正常半月板之间的半月板尺寸。
横断面研究；证据等级，3级。
这项观察性横断面研究于2016年至2017年进行。对照组由200个内侧和外侧半月板均正常的膝关节组成。内侧完整组由150例内侧半月板完整但外侧半月板损伤的病例组成，外侧完整组由150例外侧半月板完整但内侧半月板损伤的病例组成。所有患者均为男性。各组间的平均年龄、身高和体重无差异。我们在MRI上研究了半月板尺寸，包括前后径和内外侧长度、前后角之间的距离（AHPH距离）以及前后角和半月板体部的宽度和高度。
对照组和内侧完整组之间大多数内侧半月板尺寸相似，但内侧完整组的AHPH距离较小（<0.001）。同样，对照组和外侧完整组之间大多数外侧半月板尺寸相似，但外侧完整组的AHPH距离较小（<0.001）。
对侧间室存在半月板损伤的完整半月板的大多数尺寸与对侧间室正常的正常半月板相似。在MRI上测量对侧间室存在半月板损伤的对侧完整半月板的尺寸可能是确定半月板同种异体移植物大小的合适方法。
