You are here

Rotator Cuff Arthropathy Classification

Hamada Classification picture

 

Hamada Classification of Arthritis in chronic rotator cuff tears (Hamada K, CORR 1990;254:92).

  • Stage 1: Acromiohumeral interval greater than 6 mm.
  • Stage 2: Acromiohumeral interval less than 7 mm.
  • Stage 3: Acromiohumeral interval less than 7 mm with acetabulization of acromion.
  • Stage 4a: Acromiohumeral interval less than 7 mm with glenohumeral arthritis without acetabulization.
  • Stage 4b: Acromiohumeral interval less than 7 mm with acetabulization and glenohumeral arthritis.
  • Stage 5: Acromiohumeral interval less than 7 mm with osteonecrosis of humeral head.