This could be associated with a compensatory cervical hyperlordosis as a response to the arthrokinematic
rachis equilibrium; however, it is now possible to clarify that lumbar hyperlordosis in women is more apparent than real because it is mainly conditioned by the high muscle and gluteal fat mass on the hip .
component must occur to prevent the humeral head from colliding with the acromion which creates subacromial impingement, which is associated various pathologies (29,41).
The complaint of ankle instability during sport or recreational activity could be multi-faceted, the result of the following: pathologic laxity, (41, 42) arthrokinematic
impairments, (4, 43, 44) synovial and degenerative changes, (45-47) muscular weakness, (48, 49) decreased proprioception (50, 51) and postural control deficits, (13, 52) and impaired neuromuscular firing patterns.
Mechanical instability is the increase in accessory movement (arthrokinematic
motion that cannot voluntarily be produced, e.g.
Insufficient active muscle stiffness at the time of external perturbation might allow excessive muscle lengthening, which results in uncontrolled arthrokinematic
motion and can increase ligament loading and injury risk .
Based on the arthrokinematic
principle of that the talus glides posteriorly during dorsiflexion.