Fig. 1.
The femoral neck-shaft angle (NSA) was measured on the preoperative anteroposterior pelvic radiographs. The NSA was defined as the angle (α) between the midline of the proximal femoral diaphysis (AA′) and the anatomic axis of the neck (BB′).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.