• Long head arises from the superior glenoid margin and the
• short head from the tip of the coracoid process.
• Exits joint at 90 degree turn stabilised by the rotator sling
• Sling comprises coracohumeral and superior GH ligs
• Biceps dislocation occurs with an interval or combined interval and subscapularis tear
• Subluxation can be incomplete and the biceps is perched on the medial margin of the groove
• If the groove is empty and the long head cannot be located medially, then rupture is likely
• Careful examination of the more inferior positioned axial MR images or
• scanning more inferiorly with ultrasound will usually demonstrate the ruptured tendon end
• There are many variants of the proximal biceps
• Accessory slips are common
