Severe LBP
- most common indication
Ipsilateral knee pain
- less beneficial
Malposition
- especially abduction
Absent abductor mechanism
Flail
Active infection
Insufficient bone stock
LLD
Young adult
- 16 - 30 years old
- monoarticular disease
- heavy demand
Exhausted options of osteotomy
- risk of THA failure / multiple revision surgeries considered too high
Maximise bony contact
Minimise shortening
Schwannoma
- benign tumour of nerve sheath
Less common than neurofibroma
- occurs in adults
- can occur along any peripheral nerve
- also can occur along a nerve root
Usually a large nerve
More common in forearm
Seen in NF 2
- acoustic Schwannoma
Rare low-grade malignant tumour
- cell of origin unknown
Usually second or third decade of life
90% diaphysis of tibia
Mandible
Most common anterior cortex of tibia
Fracture talus through articular cartilage into subchondral bone
- 2° force transmitted from distal tibia
Osteochondritis dissecans v osteochondral fracture
6% ankle sprains
Average age = 25
M > F
Compression of some or all of the nerve roots in the cauda equina
- bladder dysfunction
- bowel dysfunction
- saddle anaesthesia
- variable motor and sensory loss
HNP
- most common
Epidural haematoma
- post surgical
- spinals and anticoagulation