Ankle Arthroplasty
History
First generation (late 70s early 80s)
Results
First generation (late 70s early 80s)
Results
Pigmented Villo-Nodular Synovitis
- benign inflammatory process that arises in synovial tissues
- contains significant amounts of hemosiderin
Age: 20 - 50
Sex: M > F
A. Diffuse
- throughout joint synovium
- more difficult to treat / excise fully
Chondroid Metaplasia of synovium affecting large joints
Nodules of hyaline cartilage
- formed in the subsynovial layer of joint capsules
Rare lesion
Most common in 20's and 30's
Sex: M > F (2:1)
Monoarticular
Diaphyseal Aclasis / Multiple Osteochondromas
Heritable skeletal dysplasia
AD with variable penetrance (96%)
Incidence of malignant transformation much higher
- 10% overall
- 1 % / year
Chondrosarcoma (CS) > Osteosarcoma (OS)
Aids
Shoes - raises / wear patterns
Stigmata generalised disease
Hands - RA, CMT
Front
Knee alignment
Forefoot - Hallux & Lesser toes
Scars
Circulatory changes
Medial Side
Turn affected side away & ask to step foot forward
Flexed attitude of knee
Medial arch - planus / cavus
Neuropathic Arthropathy
Progressive destructive arthropathy 2° to neurological condition
- usually minimal to no trauma