Rotator Cuff Arthropathy
- Seebauer
- Type IA – centered, stable
- Type IB – centered medialized
- Type IIA – decentered, limited stability, superior translation
- Type IIB – decentered, unstable, anterosuperior escape
- Hamada
- Grade 1 – AHI >/= 6 mm
- Grade 2 – AHI </= 5mm
- Grade 3 – Grade 2 + acetabularization of acromion
- Grade 4A – GH OA, no acetabularization, AHI < 7mm
- Grade 4B – GH OA, acetabularization, AHI </=5mm
- Grade 5 – humeral head collapse
| Study | Title | Purpose | Methods | Observers | System | Inter | Intra |
| Iannotti, 2010 | Agreement study of radiographic classification of rotator cuff tear arthropathy | Evaluated Seebauer, Hamada, Favard classification systems | 45 radiographs | 4 surgeons | Seebauer | 0.39 | 0.39-0.97 |
| Favard | 0.13 | 0.44-0.84 | |||||
| Hamada | 0.42 | 0.72-1.00 |
Primary Glenohumeral Arthritis
- Modified Walch
- A1 – centered humeral head, minor central glenoid “erosion”
- A2 – centeted humeral head, major central glenoid “erosion”
- B1 – posterior humeral head subluxation, no glenoid “erosion”
- B2 – posterior humeral head subluxation, post glenoid “erosion”
- B3 – monoconcave glenoid “posteriorly worn”, at least 15 degree retroversion
- C – dysplastic glenoid with at least 25% retroversion
- D – glenoid anteversion or anterior humeral head subluxation