knock knee vs bow knee

Knock knees (genu valgum) is condition when legs have deformity inward of natural legs position.
Bow legs (genu varum) is condition when legs have deformity outward of natural legs position.

   

postural bow legs - combination of medial rotation of femur, pronation of the feet, hyperextension of knee
                               - marked medial rotation femur in relation to tibia(↓Rt. L/E of 2nd. fig.)
                               - posterolateral displacement of the tibia(↓2nd. fig.)
                               - increased varus and medial rotation of femur during single-leg standing(↓last fig.)

decreased medial rotation of the femur when activating the pelvic girdle lateral rotator muscles during single-leg stand
(위의 그림처럼 한다리로 섰을때 tibia에 대해 femur가 med. rotation되어진다면 bow knee를 의심해 볼 수 있다. 그러나 한다리로 섰을때 hip lateral rotator contraction을 시켜 준다면 femur의 med. rotation을 감소시켜 줄 수 있다!
→ 교정 방법!!!)






hip anterversion(→ 과도한 hip medial rotation으로 인해 knock knee로 변형 → Q-angle 증가)

hip retroversion(→ 과도한 hip lateral rotation으로 인해 bow knee로 변형)