arthrodesis Flashcards
1
Q
What are the indications for arthrodesis?
A
Failed TKR
loss of extensor mechanism
Neuropathic Jt
Tumour
2
Q
What are the contraindictations?
A
Bilateral knee disease
Ipsilateral Hip/ankle
Severe segmental bone loss
Contralateral amputation
active infection
3
Q
what is the ideal position for knee fusion?
A
- 10 deg flexion
- 5 valgus
- 10 deg ER - match other leg
4
Q
what techniques are available for arthrodesis?
A
- intramedullary nailing
- frame
- plate fixation
5
Q
what are the common complications?
A
non-union - greatest risk
amputation
nail breakage - fatigue failure
6
Q
what are the goals of treatment?
A
Removal implants
Prepare osseous beds
Radical debridement
Bone cuts in correct alignment
Good apposition
Bone defect management
7
Q
what are the technical difficulties associated with arthrodesis using an intramedullary nail?
A
- difficulty getting correct varus/ valgus alignment
- nail diameter
