Influência do ligamento da cabeça do fêmur na mecânica do quadril

Abstract

Investigamos a influência do ligamento da cabeça do fêmur no arco de movimento de flexão-extensão e de adução-abdução do quadril. Para isso foram realizadas medidas em 7 quadris de cadáveres humanos, inicialmente com os ligamentos íntegros; posteriormente com a artroscopia e a seguir com os ligamentos seccionados também através de técnica artroscópica. Foi utilizado para isso um dispositivo elaborado para se medir o arco de movimento submetido a um torque de 2,5 N.m . Foi observado aumento com significância estatística no arco de abdução-adução às custas de adução. Concluímos que o ligamento da cabeça do fêmur influi limitando a adução do quadril.

Function of the ligamentum teres during multi-planar movement of the hip joint

“…Tears of the ligamentum teres are commonly found in athletes undergoing hip arthroscopy [4], particularly in patients with femoroacetabular impingement [17]. While ligamentum teres pathology is becoming more recognized, there remains continued debate regarding the mechanical function of the ligamentum teres and its role in stabilization of the hip joint [1–3, 5, 7, 8, 10, 15, 16, 18].…”

A cadaveric model for ligamentum teres function: a pilot study

“…The role the ligamentum teres has in limiting motion and stabilizing the hip joint has not been clearly established. It has been suggested that the ligamentum teres limits hip movement in combined flexion, adduction, and lateral rotation [1, 9, 17], adduction [7, 8], abduction [6, 17] and lateral rotation [4, 5]. It was also found that during the combined motion of hip flexion‐abduction (i.e.…”

Classification of Runners with High versus Low Hip Adduction Based on Measures of Pelvis and Femur Morphology

“…Given the fact that femoral head anteversion in the current study was measured using the axis that went through the centers of femoral fovea and femoral head, it is reasonable to speculate a contributory role of ligamentum teres in affecting frontal plane hip kinematics. With fibers oriented primarily in the superior-inferior direction, ligamentum teres has been reported to be an important structure in limiting hip adduction motion (27)(28)(29)(30) and possesses comparative mechanical properties to anterior cruciate ligament (31) and the medial patellofemoral ligament (32). Anatomically speaking, a larger angle of femoral head anteversion would re-orient the ligamentum teres and consequently reduce its effectiveness in resisting hip adduction motion.…”