Tears of the rotator cuff require greater forces to be exerted by both the deltoid as well as the muscles of the rotator cuff itself to achieve stable abduction [1]. Forces required increase with tear size and can contribute to the anterior or posterior extension of a tear. The part of th...
Rotator crescent 撕裂导致肩关节力学异常和肩关节不稳定; RC和crescent的应力保护来自于“悬索桥模型suspension bridge model”; Rotator crescent 是无血管的,损伤愈合缓慢; 肩袖损伤时,肩间隔(RI)解剖结构也会受到干扰; 注:以上仅个人学习资料整理: 资料来源: IMPT Approach《CSP》; Revisiting the Anatomy of Rota...
The primary muscle group that supports the shoulder joint is the rotator cuff muscles. The four rotator cuff muscles are the supraspinatus, infraspinatus, teres minor, and subscapularis. Together the rotator cuff muscles form a musculotendinous cuff as they insert on the proximal humerus. The ro...
of the shoulder–acromioclavicular, sternoclavicular, glenohumeral, scapulothoracic joints, which rely on associated muscles–eg, those attached to the scapula, to provide dynamic stability. SeeFrozen shoulder,Little League shoulder,Milwaukee shoulder, Pathologists' shoulder, Rotator cuff, Scapular reaction...
The head of your upper arm bone fits into a rounded socket in your shoulder blade. This socket is called the glenoid. A combination of muscles and tendons keeps your arm bone centered in your shoulder socket. These tissues are called the rotator cuff. They cover the head of your upper ar...
Posterior axio-appendicular musclesExtrinsic muscles: Trapezius, latissimus dorsi, levator scapulae, rhomboid major, rhomboid minor Intrinsic muscles: Deltoid, teres major, rotator cuff muscles (supraspinatus, infraspinatus, teres minor, subscapularis)...
If the joint is overstuffed, the cuff muscles may be at the high end of their length-tension curve. Overtensioning of the cuff may increase the risk of rotator cuff failure (see Fig. 16-199). After surgical optimization of the shoulder kinematics, the principal method for improving strength...
Muscles and Fascia of the Shoulder. Henry Vandyke Carter,Public Domain, via Wikimedia Commons [1] Javed O, Maldonado KA, Ashmyan R. Anatomy, Shoulder and Upper Limb, Muscles. StatPearls. 2023 Jan:():[PubMed PMID: 29494017] [2]
Shoulder symptoms in overhead athletes are related mainly to failure of the kinetic chain. Once the kinetic chain fails, shoulder biomechanics may change, resulting in overstress of specific soft tissues, including tendons, ligaments, and muscles, or at the joint surface. ...
The scapulohumeral muscles stabilize the glenohumeral joint by connecting thehumerusHumerusBone in humans and primates extending from the shoulder joint to the elbow joint.Arm: Anatomyto the scapula, including the rotator cuff muscles. Table: Origin, insertion, innervation, and function of the scapul...