SHORT LEG SYNDROME (GAIT ANALYSIS OF UNEQUAL LIMB LENGTH)
The presence of limb length discrepancy is usually associated with pelvic or lumbar misalignment. The short leg may be FUNCTIONAL, ANATOMICAL, or a COMBO of both. Studies have found that the majority of patients presenting to our offices are functional, but a growing number seen are anatomical, the result of post hip or knee replacement surgeries. Many of theses can be corrected with in shoe heel lifts. You need an understanding of unequal limb length biomechanics before prescribing a heel lift from Atlas Biomechanics
FUNCTIONAL SHORT LEG:
1. Sacroiliac joint that is misaligned causing the sacral base to drop to one side.
2. Flexion or Extension with one of the iliac bones out of its normal anatomical position.
3. Posterior Tibial Tendon Dysfunction causing the subtalar joint to over pronate, effectively shorting the limb.
ANATOMICAL SHORT LEG:
1. Hip or knee replacement surgery.
3. Congenital, birth injuries and infections to the growth plates.
BIOMECHANICS OF THE SHORT LIMB:
1. Supination of the subtalar joint.
2. External rotation of the tibia.
3. External rotation of the knee.
4. Abnormal patella tracking.
5. Pelvic tilt.
6. Shifting of the center of gravity to the short side.
BIOMECHANICS OF THE LONG LIMB:
1. Pronation of the subtalar joint.
2. Internal rotation of the tibia and the knee.
3. Abnormal patella tracking.
4. Vaulting over the hip joint.
GAIT EVALUATION OF THE UNEQUAL LIMB LENGTH:
1. Center of gravity shifted to the short side.
2. Unilateral early heel lift.
3. Pelvic tilt.
4. Shoulder drop.
5. Unilateral subtalar pronation.
6. Unilateral shoe wear (lateral heel).
7. Abnormal knee rotation and patella tracking.
Shoe Lifts come in small, medium and large.
1/8 inch (3 mm) heel lift
1/4 inch (6 mm) heel lift
3/8 inch (9 mm) heel lift
1/2 inch (12 mm) heel lift
Adjustable Heel Lift with Built in Heel Wedge