56.DEGREE OF ADJUSTMENT IN KNEE ARTHRODESIS

A.5'-10' FLEXION
B.70'
C.90'
D.120'

ANS:5'-10' FLEXION



Knee Arthrodesis


Indications

1. painful ankylosis after infection or trauma
2. neuropathic arthropathy
3. tumor resection
4. salvage for failed TKA (most common)
5. loss of extensor mechanism

Optimal Position

• 5-8° valgus
• 0-10° of external rotation (match other leg)
• 0-15° of flexion

Techniques
intramedullary rod fixation is preferred technique -- union rates of 100%
external fixation--union rate of 38%