Article

Leg-length discrepancy (LLD) can be a sequela of slipped
capital femoral epiphysis (SCFE). We tried to identify factors that affect the
development of LLD following SCFE.
METHOD: We evaluated 85 patients
who had been treated using percutaneous screw fixation.
The average age of the
patients at the time of surgery was 12 (8-16) years. The relationship of LLD and
various clinical and radiographic parameters was evaluated: the degree of slip,
articulotrochanteric distance (ATD), and articulotrochanteric distance difference
(ATDD) (healthy side minus the side with SCFE). We assessed the relationship
between ATDD and LLD based on scanogram. RESULTS: The average LLD was 1.4
(0.1-3.8) cm at 6 (2-15) years postoperatively. 48 of 85 patients had an LLD of
greater than 1 cm and 10 patients had an LLD of greater than 2 cm. There was a
correlation between the magnitude of LLD and the severity of the slip. There was
no statistically significant correlation between LLD and the stability of the
slip, age, BMI, sex, or race. There was a significant correlation between LLD and
ATDD. INTERPRETATION: Patients with a high degree of slip are prone to develop
clinically significant LLD. Although ATDD does not give the exact LLD, it can be
used as a primary measurement, which should be supplemented with scanogram in
cases of clinically significant differences in length.

Langue : ANGLAIS