Osaka University Graduate School of Medicine, Department of Orthopaedic Medical Engineering, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan.
Bone Joint J. 2013 Oct;95-B(10):1320-5. doi: 10.1302/0301-620X.95B10.31647.
We investigated differences in the location and mode of labral tears between dysplastic hips and hips with femoroacetabular impingement (FAI). We also investigated the relationship between labral tear and adjacent cartilage damage. We retrospectively studied 72 symptomatic hips (in 68 patients: 19 men and 49 women) with radiological evidence of dysplasia or FAI on high-resolution CT arthrography. The incidence and location of labral tears and modes of tear associated with the base of the labrum (Mode 1) or body of the labrum (Mode 2) were compared among FAI, mildly dysplastic and severely dysplastic hips. The locations predominantly involved with labral tears were different in FAI and mild dysplastic hips (anterior and anterosuperior zones) and in severely dysplastic hips (anterosuperior and superior zones) around the acetabulum. Significant differences were observed in the prevalence of Mode 1 versus Mode 2 tears in FAI hips (72% (n = 13) vs 28% (n = 5)) and severe dysplastic hips (25% (n = 2) vs 75% (n = 6)). The frequency of cartilage damage adjacent to Mode 1 tears was significantly higher (42% (n = 14)) than that adjacent to Mode 2 tears (14% (n = 3)). Hip pathology is significantly related to the locations and modes of labral tears. Mode 1 tears may be a risk factor for the development of adjacent acetabular cartilage damage.
我们研究了发育不良髋关节和髋关节股骨髋臼撞击症（FAI）之间的盂唇撕裂位置和模式的差异。我们还研究了盂唇撕裂与相邻软骨损伤之间的关系。我们回顾性研究了 72 例有髋关节症状的患者（68 例患者：19 名男性和 49 名女性），这些患者在高分辨率 CT 关节造影上有发育不良或 FAI 的放射学证据。在 FAI、轻度发育不良和重度发育不良髋关节中，比较了盂唇撕裂的发生率和位置以及与盂唇基底（模式 1）或盂唇体（模式 2）相关的撕裂模式。在 FAI 和轻度发育不良髋关节（前和前上区）以及重度发育不良髋关节（前上和上区）中，盂唇撕裂的主要位置不同髋臼周围。在 FAI 髋关节（72%（n=13）比 28%（n=5））和重度发育不良髋关节（25%（n=2）比 75%（n=6））中，模式 1 撕裂比模式 2 撕裂更常见，观察到显著差异。模式 1 撕裂附近的软骨损伤频率明显更高（42%（n=14）比模式 2 撕裂附近的软骨损伤频率 14%（n=3））。髋关节病变与盂唇撕裂的位置和模式密切相关。模式 1 撕裂可能是相邻髋臼软骨损伤发展的危险因素。
