Cho Jae-Ho, Han Kyeong-Jin, Lee Doo-Hyung, Chung Nam-Su, Park Do Young
Department of Orthopaedic Surgery, School of Medicine, Ajou University, San 5, Woncheon-dong, Yeongtong-gu, Suwon, 443-721, Korea.
Knee Surg Sports Traumatol Arthrosc. 2015 Feb;23(2):370-5. doi: 10.1007/s00167-013-2546-4. Epub 2013 Jun 8.
This study examined the relationship between the presence of a pit above the lesser tuberosity on axial view radiographs and rotator cuff tears and compared the demographic data between groups according to the presence of a pit above the lesser tuberosity. The hypothesis of this study was that the radiographic finding of a pit above the lesser tuberosity is related to rotator cuff tears.
For 112 patients with a symptomatic rotator cuff tear, plain radiographs of the symptomatic shoulder (tear side radiographs) and plain radiographs of the asymptomatic contralateral shoulder (no-tear side radiographs) were assessed. Seventeen radiological findings, including a pit above the lesser tuberosity, osteophytes, subchondral cysts, and sclerosis, were recorded by one blinded observer. Demographic data such as age, duration of symptoms, sex, arm dominance, smoking history, trauma history, American Shoulder and Elbow Surgeons score, Constant score, and involved tendon were collected.
A pit above the lesser tuberosity was noted on tear side radiographs of 40 patients (35.7 %) and on the no-tear side radiographs of 27 patients (24.1 %), representing a significant difference (P = 0.040). A pit associated with a rotator cuff tear was observed more often in the dominant arm (P = 0.040) and more often in patients with less previous trauma (P = 0.024).
A pit above the lesser tuberosity on axial view radiography was associated with a rotator cuff tear and occurred more often in the dominant arm of patients who had no trauma history.
Prognostic study, Level III.
本研究探讨轴位X线片上小粗隆上方凹陷的存在与肩袖撕裂之间的关系，并根据小粗隆上方凹陷的存在情况比较各组之间的人口统计学数据。本研究的假设是，X线片上小粗隆上方凹陷的表现与肩袖撕裂有关。
对112例有症状的肩袖撕裂患者，评估患侧肩部的X线平片（撕裂侧X线片）和无症状对侧肩部的X线平片（无撕裂侧X线片）。由一名盲法观察者记录17项影像学表现，包括小粗隆上方凹陷、骨赘、软骨下囊肿和硬化。收集年龄、症状持续时间、性别、优势臂、吸烟史、创伤史、美国肩肘外科医师评分、Constant评分和受累肌腱等人口统计学数据。
40例患者（35.7%）的撕裂侧X线片上发现小粗隆上方凹陷，27例患者（24.1%）的无撕裂侧X线片上发现该凹陷，差异有统计学意义（P = 0.040）。与肩袖撕裂相关的凹陷在优势臂中更常见（P = 0.040），在既往创伤较少的患者中更常见（P = 0.024）。
轴位X线片上小粗隆上方凹陷与肩袖撕裂有关，且在无创伤史患者的优势臂中更常见。
预后研究，III级。
