Scapulohumeral rhythm

• Scapulohumeral rhythm:

  • Coordinated rhythm between scapula and humerus during shoulder flexion and abduction

  
• Scapulohumeral rhythm:

  • Initial 25 ° - 30 ° of flexion/abduction from glenohumeral joint alone
  • Beyond this, scapular lateral rotation occurs in conjunction with glenohumeral movement (1:2 ratio) to permit full ROM