Magnetic Resonance Imaging in Traumatic Posterior Hip Dislocation

Abstract

In this small series of patients, posterior hip dislocation did not imply a tear of the obturator externus muscle. An intact obturator externus tendon suggests preservation of the deep branch of the medial femoral circumflex artery to the femoral head.

Systematic Review and Meta-Analysis of Avascular Necrosis and Posttraumatic Arthritis After Traumatic Hip Dislocation

“…An increased time to reduction, cartilage injury to the femoral head, associated acetabulum fracture, and the presence of polytrauma have all been associated with a worse prognosis. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] Posterior dislocations are very common and associated often with hitting the knee on the dashboard forcing the femoral head out posteriorly. Most surgeons believe that a closed reduction as soon as possible leads to an improved result, but the exact timing of this treatment and its possible benefits are unclear.…”

“…Most series are confusing because of the other previously mentioned associated injuries and with further subclassifications, resulting in the numbers in each group becoming small. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] This systematic review was undertaken to determine the incidence of AVN and PTA after traumatic hip dislocation and to examine whether the direction of dislocation, presence of associated fractures, or time to reduction were factors implicated in producing a higher complication rate.…”

Long-term outcome after traumatic anterior dislocation of the hip

“…A further limitation might be that MRI scans for the detection of any intra-articular hip joint pathologies such as labral or chondral lesions may not have been performed. This may be the result of a lack of distinct recommendations concerning the use of MRI after anterior traumatic hip dislocation as well as the deficit in the amount of general information on chondral lesions or labrum injuries available in the literature [2,4,29]. However, in the acute trauma setting in the present study, conventional X-rays and CT scans were preformed after reduction to detect injuries requiring subsequent treatment.…”

Gluteus medius avulsion in posterior hip fracture dislocation–A rare injury

“…6 A similar study by Tannast et al showed posterior wall fractures associated with obturator internus, gemelli and gluteus minimus avulsions. 7 Some authors have advocated magnetic resonance imaging in acute hip dislocation with stable posterior wall fractures for evaluating the aforementioned injuries. 8 Gluteus medius avulsion in a patient with grade IIIA open pelvic ring disruption and left posterior hip fracture dislocation has been reported by Urchak et al 1 They proceeded with open reduction and internal fixation (ORIF) of pelvic ring disruption, and since the posterior wall fracture was comminuted, simple debridement and loose body removal was done.…”