1. Some illustrative cases
The limping child
Some illustrative cases

2. Case #1

3. Case 2

4. Case 3

5. Case 4

6. Case 5 - Which side is abnormal?

7. The lines drawn along the superior border of the proximal femur metaphysis (the Klein line) should intersect part of the proximal femoral epiphysis.
The patient's right hip (left on the screen) shows the line just touching the lateral margin of the epiphysis. This is abnormal, indicating that the femoral capital epiphysis has slipped inferiorly and medially.
The patient's normal left hip (right on the screen) shows the line intersecting the lateral part of the femoral epiphysis. This is normal.

8. Case 6
Sufe

9. Case 6

10. Other pathology

11. Osteosarcoma

12. Ewing
tumour

13. Osteoid
osteoma

14. Bone cyst

15. 1 Septic hip
2,3,4 Perthes
5,6 SUFE
Other cases - malignancy