Primary
Otto's Disease
- bilateral 1/3
- middle aged females
- pain & decreased ROM early
- coxa vara & OA common
Secondary / PROFSHAMN
Paget's
RA / Radiation
Osteomalacia / OI
Fracture - Central Dislocation
Septic arthritis especially TB
Hemiarthroplasty or bipolar
Ankylosing Spondylitis / Reiter's
Marfan's syndrome / Ehler Danlos / Stickler
Malignancy
Neurofibromatosis