A
Hip abductors (Gluteus medius and minimus)
B
Hip adductors (Adductor longus and magnus)
C
Short external rotators (Piriformis and obturator internus)
D
Hip flexors (Iliopsoas)
Explanation:Correct Option: A. Restoring or slightly increasing the femoral offset lateralizes the greater trochanter, which increases the moment arm (lever arm) of the hip abductor musculature (gluteus medius and minimus). This optimizes their tension, prevents limp (Trendelenburg gait), and improves joint stability against dislocation. (Ref: McGrory et al., J Bone Joint Surg Br, 1995)