Sistema oblíquo posterior e longitudinal profundo como mecanismos de estabilização sacroilíaca: revisão de literatura

Abstract

The lumbopelvic region has the transfer function of weight between the legs and spine and vice versa. This role demands a great ability to maintain static stability, and especially in dynamic joint complex. The structures responsible for stabilizing SI act through two mechanisms so-called closing and closing by force, constituting the self-locking mechanism of SI. Two stabilization systems work this way under the SI joint: posterior oblique system and deep longitudinal system. The aim of this study was to review the literature on the contribution of the posterior oblique and longitudinal system deep in the sacroiliac stabilization. This narrative review was composed of three items selected from the Medline, Lilacs, Cochrane, Scielo and Peter in English and Portuguese. The posterior oblique system and deep longitudinal system are two of these systems that act directly on the sacroiliac stability due to the connection through the sacrotuberous and posterior sacroiliac ligaments along. These systems also suffer influence of the transmission mechanism myofascial force through the connections previously mentioned. Deficiency in a system, episodes of instability may occur due to increased shear joint, thus stabilizing these systems depend for proper operation of the joint complex. The SI joint is one of the causes of back pain, yet little identified due to the difficulty of clinical diagnosis, therefore, to identify possible interventions and prove them scientifically is also a factor to be studied in future. One factor identified in all studies is unstable disability under the closure, however, few studies were found in the review of systems and posterior oblique longitudinal deep. I stress that the stabilization SI should not be considered only as a result of these two systems, but other units that lead to kinesiology and postural changes. We should also consider the mechanism of MPT that can contribute or cause joint instability, thus making it more complex evaluation of the causal factor of instability SI.