Legg calve Perthes

Question 1

What is LCP etiology

Answer 1

Repeated episodes of hip synovitis

Question 2

More common in M or F

Answer 2

M

4-8 yoa

Question 3

4 phases of LCP

Answer 3

1) failure of femoral ossification nucleus to increase in size due to lack of blood flow
2) fragmentation phase - bony epiphysis with fragments
3) reossification phase - alterations in femoral head shape with normal
Bone density
4) healed

Question 4

Older the age of onset, better/worse the outcome

Answer 4

Worse

Question 5

LCP common age range

Answer 5

4-8 yoa

Total range: 3-12 yoa

Question 6

F/M have worse prognosis

Answer 6

F

Question 7

S/S LCP (5)

Answer 7

pain with activity but relieved with rest ( in groin or anteromedial thigh)
decreased hip ABD and IR
insidious onset of limp
(+) Trendelenburg
Possible LLD due to bony changes in femoral head and neck