• Anatomy
    1. Sublabral recess
    2. Axillary recess
    3. Anterior capsule attachment
    4. Middle glenohumeral ligament
  • LT
  • Vascular
  • Congenital
    1. Sprengel deformity
      1. Congenital deformity in which the scapula is hypoplastic and elevated.
      2. Associated with Klippel-Feil syndrome
  • Infection
  • Inflammatory
  • Neoplastic
  • Trauma
  • Iatrogenic
  • Metabolic
  • Clavicle
    1. Absent distal clavicle (MISCHTR)
      1. Metastases/myeloma
      2. Infection
      3. Surgery
      4. Cleidocranial dysplasia
      5. Hyperparathyroidism (calvicle is widened and irregular)
      6. Trauma
      7. RA (clavicle tapers to a point)
    2. Malignant neoplasms
      1. Ewings sarcoma
      2. Osteogenic sarcoma
  • Shoulder
    1. Os acromiale
      1. May show impingement like symptoms.
    2. High-riding shoulder - RA, CPPD, Torn Rotator Cuff
    3. Hyperparthyroidism - subchondral bone loss