Originally Posted by
MSPeconomist
When is the flight? If 17A is also a special needs case, you could still lose it unless your knee qualifies for special needs seating. [I'm not sure whether the left side bulkhead seats are also considered special needs seats on the 767 like the ones on the right of the aircraft.]
Technically the rules are quite simple. Your knee must either be fused or immobilized to qualify to bump someone or prevent someone from taking it. A bad knee in itself doesn't qualify.