Acıbadem Health Group Maslak Hospital and Zekeriyaköy Outpatient Clinic Orthopaedics and Traumatology Department, Istanbul, Turkey.
Istanbul University Istanbul Medical Faculty Orthopaedics and Traumatology Department, Fatih/İstanbul, Turkey.
Orthop Traumatol Surg Res. 2022 Apr;108(2):103122. doi: 10.1016/j.otsr.2021.103122. Epub 2021 Oct 20.
Scapular morphology is an extrinsic factor playing role in rotator cuff tear (RCT) etiology. The objective of this study was to evaluate the relationship between critical shoulder angle (CSA) and acromion index (AI) with partial-bursal side and full thickness RCT and the size of the RCT.
The hypothesis was that CSA and AI would be greater in partial bursal-side RCT and full-thickness RCT patients and would increase with the size of the RCT.
This retrospective study assessed 218 patients who had standard shoulder radiographs and magnetic resonance imaging. Patients were divided into three groups: intact rotator cuff (68), partial bursal-side RCT (34) and full-thickness RCT (116). In the second part, full-thickness RCT patients were divided into four groups according to RCT size; small (<1cm), medium (1-3cm), large (3-5cm) and massive (>5cm). AI and CSA measurements were evaluated from radiographs.
The mean CSA was 32.8̊ in control group, 34.3̊ in partial group and 36.9̊ in full-thickness group. The mean AI was 0.66, 0.68 and 0.72 respectively. Significant difference was found in AI and CSA between full thickness RCT and intact RC group (p<0.01), and partial RCT and full thickness RCT group (p<0.05) in paired comparisons. In full thickness RCT size groups the mean CSA was 34.2̊, 36.4̊, 39.0̊ and 40.8̊ and mean AI was 0.70, 0.71, 0.73 and 0.79 respectively. Significant difference was found between small-large, small-massive, medium-massive groups for CSA in paired comparisons and between small-massive, medium-massive groups for AI.
CSA and AI were significantly greater in full-thickness RCT patients and the size of the RCT increased with CSA and AI. The greater CSA and AI could be predictors for larger RCT.
III; Cross-Sectional Design; Prognosis Study.
肩胛骨形态是肩袖撕裂（RCT）病因中的一个外在因素。本研究的目的是评估关键肩角（CSA）和肩峰指数（AI）与部分肩袖侧和全层 RCT 以及 RCT 大小的关系。
假设 CSA 和 AI 在部分肩袖侧 RCT 和全层 RCT 患者中更大，并随着 RCT 的大小而增加。
这项回顾性研究评估了 218 名接受标准肩部 X 线和磁共振成像检查的患者。患者分为三组：完整的肩袖（68 例）、部分肩袖侧 RCT（34 例）和全层 RCT（116 例）。在第二部分，根据 RCT 大小将全层 RCT 患者分为四组；小（<1cm）、中（1-3cm）、大（3-5cm）和巨大（>5cm）。从 X 线片评估 AI 和 CSA 测量值。
对照组的平均 CSA 为 32.8°，部分组为 34.3°，全层组为 36.9°。平均 AI 分别为 0.66、0.68 和 0.72。全层 RCT 与完整 RC 组之间的 AI 和 CSA 差异有统计学意义（p<0.01），部分 RCT 与全层 RCT 组之间的差异也有统计学意义（p<0.05）。在全层 RCT 大小组中，平均 CSA 分别为 34.2°、36.4°、39.0°和 40.8°，平均 AI 分别为 0.70、0.71、0.73 和 0.79。CSA 在配对比较中，小-大、小-巨、中-巨组之间差异有统计学意义，AI 中，小-巨、中-巨组之间差异有统计学意义。
全层 RCT 患者的 CSA 和 AI 明显更大，RCT 的大小随着 CSA 和 AI 的增加而增加。更大的 CSA 和 AI 可能是更大 RCT 的预测指标。
III；横断面设计；预后研究。
