chondrolysis

Deformity

Varus / extension / external rotation

Options

Intertrochanteric

Base of Neck

Subcapital

Osteotomy

Valgus / flexion / internal rotation

Intertrochanteric / Southwick 

Technique

- biplanar

- valgising / flexion / internal rotation 

Definition

Displacement of proximal femoral epiphysis in the immature hip

- due to imbalance of mechanical and endocrine factors 

Epidemiology

Age Peak Incidence : M 12-14; F 11-13; Slight downward trend due to earlier maturation of children

L hip > R

10 / 100 000

Bilateral SUFE

No endocrine abnormality

- 20% at time of of diagnosis

- another 20% during diagnosis

- up to 60% with long term follow up

Chondrolysis

Definition

- loss of 50% joint space or < 3mm joint space

Epidemiology

- female 2:1

- 10-20% of SUFE 

Causes

1.  Head penetration

- use only 1 screw

2.  Immunologically mediated global loss of articular cartilage

- can occur in no treatment of SUFE

Clinical