Stiffness
Incidence
10%
Requirements
70o swing phase
80o climb up stairs
90o climb down stairs + sit down in chair
100o low chair
NHx
Stiffness usually subsides at 6-8/52
- generally improves out to 3/12
- slow improvement for up to next 9/12
stiffness
Osteoarthritis & Stiffness
Epidemiology
Relatively rare
Average age 50
Men 4:1 Women
Usually dominant arm
Aetiology
Primary
- associated with strenuous manual labour
Secondary
- trauma
- OCD
- synovial chondromatosis
- valgus extension overload / MCL insufficiency
ACL Avulsion Fracture
Meyers & McKeever classification
Type I: Undisplaced avulsion fracture
Type II: Anterior portion displaced & hinged
Type IIIA: Displaced
Type IIIB: Displaced & Rotated