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您请求的操作仅限于组中的用户:[文件:Acetabulum Primal.png|拇|300x300px|Acetabular Labrum][文件:Acetabulum Primal.png|拇|300x300px|Acetabular Labrum]]唇状面形成骨臼的纤维软骨延伸，主要由1型胶原蛋白组成，通常厚度在2-3mm之间。它与髋臼窝相连并与髋臼骨缘相连。它的形状不规则，前宽后薄，后厚。Groh MM, Herrera J. [https://link.springer.com/article/10.1007/s12178-009-9052-9髋关节唇裂的综合综述。骨骼肌医学进展[j]; 2009;2(2):105-17。Lewis CL, Sahrmann SA。[https://academic.oup.com/ptj/article/86/1/110/3852530髋臼唇撕裂。]物理治疗[j]; 2006; 26(1):110-21。在前部，唇形在桡骨切面呈三角形。在后部，唇形呈方形，但远端表面呈圆形。Narvani AA, Tsiridis E, Tai CC, Thomas P. [https://bjsm.bmj.com/content/37/3/207.short髋臼唇及其撕裂。]英国运动医学杂志2003;37(3):207-11。Lovell G. [https://www.researchgate.net/profile/Greg_Lovell/publication/14600300_The_diagnosis_of_chronic_groin_pain_in_athletes_A_review_of_189_cases/links/541b6e2f0cf2218008c4afe8.pdf运动员慢性腹股沟疼痛的诊断:189例回顾。澳大利亚体育科学与医学杂志1995;27:76-9。关节唇有三个表面:“内关节面”——与关节相邻(无血管);“外关节面”——与关节囊接触(血管);“基底面”——与髋臼骨和韧带相连。横向韧带环绕髋关节，在运动时帮助将其固定在适当的位置。 It is thought that the majority of the labrum is avascular with only the outer third being supplied by the obturator, superior gluteal and inferior gluteal arteries. There is controversy as to whether there is a potential for healing with the limited blood supply and this is an important clinical consideration. The superior and inferior portions are believed to be innervated, containing both free nerve endings and nerve sensory end organs (giving the senses of pain, pressure and deep sensation). [[File:Hip joint - Kenhub.png|alt=Hip joint|right|frameless|500x500px|Hip joint]] The functions of the acetabular labrum are: *Joint stability - increases the containment of the femoral head, deepening the joint by 21%, increasing the surface area of the joint by 28%, thus allowing a wider area of force distribution and resisting lateral and vertical motion within the acetabulum *Sensitive shock absorber *Joint lubricator - sealing mechanism keep the synovial fluid in contact with the articular cartilage *Pressure distributor - obstructs fluid flow in and out of the joint through a sealing action which is often referred to as a “suction effect” in view of the resistance generated to distraction of the head from the acetabular socket. This sealing function not only enhances joint stability, but is thought to more uniformly distribute compressive loads applied to the articular surfaces, thereby reducing peak cartilage stresses during weight-bearing.Crawford MJ, Dy CJ, Alexander JW, Thompson M, Schroder SJ, Vega CE, Patel RV, Miller AR, McCarthy JC, Lowe WR, Noble PC. [https://journals.lww.com/clinorthop/Fulltext/2007/12000/THE_2007_FRANK_STINCHFIELD_AWARD__The_Biomechanics.5.aspx The 2007 Frank Stinchfield Award: the biomechanics of the hip labrum and the stability of the hip.] Clinical Orthopaedics and Related Research 2007;465:16-22. *Decreasing contact stress between the acetabular and the femoral cartilageByrd JT. [https://www.sciencedirect.com/science/article/abs/pii/S0749806396902017 Labral lesions: an elusive source of hip pain case reports and literature review.] Arthroscopy: The Journal of Arthroscopic & Related Surgery 1996;12(5):603-12. Martin RL, Enseki KR, Draovitch P, Trapuzzano T, Philippon MJ. [https://www.jospt.org/doi/pdfplus/10.2519/jospt.2006.2135 Acetabular labral tears of the hip: examination and diagnostic challenges.] Journal of Orthopaedic & Sports Physical Therapy 2006;36(7):503-15. Image: Hip joint from different perspectives Hip joint image - © Kenhub https://www.kenhub.com/en/library/anatomy/hip-joint

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