L-shaped morphology is a key risk factor for delamination in degenerative full-thickness rotator cuff tears.

IF 3.3 2区医学 Q1 ORTHOPEDICS

Knee Surgery, Sports Traumatology, Arthroscopy Pub Date : 2025-03-03 DOI:10.1002/ksa.12640

Ethem Burak Oklaz, Ulunay Kanatli, Furkan Aral, Ramazan Duzgun, Oguzhan Ak, Muhammed Sakir Calta, Ali Turgay Cavusoglu

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Abstract

Purpose: To evaluate the relationship between delamination and tear patterns in degenerative full-thickness rotator cuff tears.

Methods: This retrospective cohort study was conducted on patients who underwent shoulder arthroscopy for rotator cuff tears between December 2020 and September 2024. The study included chronic, degenerative, full-thickness rotator cuff tears without concomitant shoulder pathology. Patients were grouped based on the presence of delamination, defined as the horizontal cleavage of the torn tendons. Age, sex, dominant extremity, symptom duration, amount of retraction, tear width and tear pattern (crescent-shaped, anterior L-shaped, posterior L-shaped and U-shaped) were compared between groups. Regression analysis was conducted to identify risk factors that may be associated with the presence of delamination.

Results: The study included 130 patients, 75 with delamination (mean age 61.1 ± 8.8 years) and 55 without (mean age 61.1 ± 8.3 years). Demographic characteristics were similar among patients with and without delamination. The rate of anterior and posterior L-shaped tears was significantly higher in delaminated tears (24% and 33%, respectively) compared to non-delaminated tears (6% and 9%, respectively) (p = 0.003 and p = 0.001, respectively). Regression analysis demonstrated that anterior L-shaped tears and posterior L-shaped tears were significantly related to delamination (p = 0.002 and p = 0.001, respectively).

Conclusion: This study demonstrates that anterior and posterior L-shaped tear patterns are significantly associated with delamination in degenerative full-thickness rotator cuff tears.

Level of evidence: Level III, retrospective cohort study.

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l型形态是退行性全层肩袖撕裂脱层的关键危险因素。

目的：探讨退行性全层肩袖撕裂中脱层与撕裂模式的关系。方法：本回顾性队列研究对2020年12月至2024年9月期间因肩袖撕裂接受肩关节镜检查的患者进行了研究。该研究包括慢性、退行性、无肩关节病变的全层肩袖撕裂。根据分层的存在对患者进行分组，分层定义为撕裂肌腱的水平劈裂。组间比较年龄、性别、优势肢体、症状持续时间、牵回量、撕裂宽度及撕裂形态（月牙形、前l形、后l形、u形）。进行回归分析以确定可能与分层存在相关的危险因素。结果：本研究纳入130例患者，其中有脱层75例（平均年龄61.1±8.8岁），无脱层55例（平均年龄61.1±8.3岁）。有无分层患者的人口学特征相似。脱层撕裂的前、后l型撕裂率（分别为24%和33%）明显高于非脱层撕裂（分别为6%和9%）（p = 0.003和p = 0.001）。回归分析显示，前l型撕裂和后l型撕裂与脱层有显著相关性（p = 0.002和p = 0.001）。结论：本研究表明，在退行性全层肩袖撕裂中，前后l型撕裂模式与脱层显著相关。证据等级：III级，回顾性队列研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Knee Surgery, Sports Traumatology, Arthroscopy 医学-外科

CiteScore

8.10

自引率

18.40%

发文量

418

审稿时长

2 months

期刊介绍： Few other areas of orthopedic surgery and traumatology have undergone such a dramatic evolution in the last 10 years as knee surgery, arthroscopy and sports traumatology. Ranked among the top 33% of journals in both Orthopedics and Sports Sciences, the goal of this European journal is to publish papers about innovative knee surgery, sports trauma surgery and arthroscopy. Each issue features a series of peer-reviewed articles that deal with diagnosis and management and with basic research. Each issue also contains at least one review article about an important clinical problem. Case presentations or short notes about technical innovations are also accepted for publication. The articles cover all aspects of knee surgery and all types of sports trauma; in addition, epidemiology, diagnosis, treatment and prevention, and all types of arthroscopy (not only the knee but also the shoulder, elbow, wrist, hip, ankle, etc.) are addressed. Articles on new diagnostic techniques such as MRI and ultrasound and high-quality articles about the biomechanics of joints, muscles and tendons are included. Although this is largely a clinical journal, it is also open to basic research with clinical relevance. Because the journal is supported by a distinguished European Editorial Board, assisted by an international Advisory Board, you can be assured that the journal maintains the highest standards. Official Clinical Journal of the European Society of Sports Traumatology, Knee Surgery and Arthroscopy (ESSKA).