The capsule and the bead are deep anatomical elements of the shoulder joint.

The articular capsule is the envelope that limits the cavity of a joint, it is normally flexible to allow movements (sort of accordion that folds and unfolds) and is ‘sensitive’ (we feel through her movements, in the normal state unconsciously). She can contribute

  • It can excessively become loose . This pathology is found in certain diseases and most often in cases of constitutional hyperlaxity, with the possibility of pain and instability (subluxations, dislocations).
  • On the contrary, it can berigide:
    • transiently after a trauma, an operation or during a retractile capsulitis,
    • or definitively most often in the form of sequelae.