Effects of Somatic Dysfunction on Leg Length and Weight Bearing

Abstract

Specific pelvic and sacral somatic dysfunctions have the potential to influence leg lengths, leading to mild disparities in length and in weight-bearing distribution through the lower extremities. (ClinicalTrials.gov number NCT01097109).

Correlación entre la dismetría, reparto de carga y alteraciones estructurales del miembro inferior.

“…el reparto de peso era mayor en el retropié derecho (85.7%). de acuerdo con Qureshi et al (14). que demostró que los sujetos con dismetrías verdaderas mayores a 10 mm.…”

“…Además, el peso no es compartido entre las dos extremidades, constituyendo un factor de riesgo para la degeneración de las articulaciones (9,11,13,14).…”

Rethinking Superior and Inferior Sacroiliac Shear: A New Approach to Diagnosis and Treatment

“…However, it has been demonstrated that there is no consistency in the relationship between sacral base declination and apparent leg length discrepancy. 7 In fact, most sacral base unleveling is associated with L5 segmental dysfunctions, not with sacroiliac shears. Interestingly, Qureshi et al found the superior sheared innominate to be more common than either anterior or posterior rotated innominates when side was not considered and the left superior sheared innominate to be the most common innominate dysfunction overall.…”

“…7 A projection from the iliac side with a concomitant sacral indentation is sometimes noted at S2 and is considered the pivot area for sacral nutation and counternutation. 7 In addition to the expected joint capsule enclosing the whole joint, there are a number of transverse supporting ligaments both anterior to the joint and posterior. Relatively, the posterior ligaments are among the thickest and strongest in the body.…”

“…Motion allowed by the anatomy of the joint itself and these powerful ligaments is between 2° and 18° of nutation/counternutation and up to 4 mm motion in any direction. 7 The 2 primary muscle groups attaching to the sacrum are multifidis between the upper posterior sacrum and the PSIS and piriformis anteriorly and inferiorly. Piriformis inserts on the femur, bridging across the anterior surface of the ilium.…”