Biomechanics of posterior shoulder instability-current knowledge and literature review  

作　　者：Henrik Constantin B?cker Samuel E Galle Mauro Maniglio Melvin Paul Rosenwasser 

机构地区：[1]Department of Orthopedic Surgery,New York Presbyterian/Columbia University Medical Center [2]Department of Orthopedics,HFR Cantonal Hospital of Fribourg

出　　处：《World Journal of Orthopedics》2018年第11期245-254,共10页世界骨科杂志（英文版）

摘　　要：Posterior instability of the shoulder is a rare condition and represents about 10% of shoulder instability. It has become more frequently recognized in the last year,even though it is more difficult to diagnose than anterior shoulder instability. As this form of shoulder pathology is somewhat rare,biomechanical knowledge is limited. The purpose of our study was to perform an extensive literature search,including PubMed and Medline,and to give an overview of the current knowledge on the biomechanics of posterior shoulder instability. The Pub Med/Medline databases were utilized,and all articles related to posterior shoulder instability and biomechanics were included to form a comprehensive compilation of current knowledge. A total of 93 articles were deemed relevant according to our inclusion and exclusion criteria. As expected with any newly acknowledged pathology,biomechanical studies on posterior shoulder instability remain limited in the literature. Current biomechanical models are performed in a static manner,which limits their translation for explaining a dynamic pathology. Newer models should incorporate dynamic stabiliza-tion of both the rotator cuff and scapulothoracic joint. There is a current lack of knowledge with regards to the pathomechanism of posterior shoulder instability,with no consensus on appropriate treatment regimens. Further investigation is therefore required at both basic science and clinical levels.Posterior instability of the shoulder is a rare condition and represents about 10% of shoulder instability. It has become more frequently recognized in the last year,even though it is more difficult to diagnose than anterior shoulder instability. As this form of shoulder pathology is somewhat rare,biomechanical knowledge is limited. The purpose of our study was to perform an extensive literature search,including PubMed and Medline,and to give an overview of the current knowledge on the biomechanics of posterior shoulder instability. The Pub Med/Medline databases were utilized,and all articles related to posterior shoulder instability and biomechanics were included to form a comprehensive compilation of current knowledge. A total of 93 articles were deemed relevant according to our inclusion and exclusion criteria. As expected with any newly acknowledged pathology,biomechanical studies on posterior shoulder instability remain limited in the literature. Current biomechanical models are performed in a static manner,which limits their translation for explaining a dynamic pathology. Newer models should incorporate dynamic stabiliza-tion of both the rotator cuff and scapulothoracic joint. There is a current lack of knowledge with regards to the pathomechanism of posterior shoulder instability,with no consensus on appropriate treatment regimens. Further investigation is therefore required at both basic science and clinical levels.

关 键 词：POSTERIOR SHOULDER instability ANATOMY SHOULDER complex SCAPULA HUMERUS GLENOHUMERAL 

分 类 号：R[医药卫生]