Descrição anatômica do terço proximal da artéria circunflexa femoral medial: estudo em cadáver

Abstract

ObjectiveTo describe, in a cadaver study, the anatomical arrangement of the proximal third medial femoral circumflex artery (MFCA).MethodsWe evaluated the anatomic arrangement of the proximal third of the MFCA through dissection in 12 cadaver hips. After measuring their height in meters (M), several parameters were determined: angle of lateralization of MFCA (Â), Depth MFCA in relation to the superomedial origin of the quadratus femoris muscle (P), and distance of MFCA from the superolateral insertion of the muscle quadratus femoris (D).ResultsIn the comparison of mean parameters between the sexes, it was noted that: Male  = 43.6 degrees, female  = 38.3 degrees. Male D = 6mm, female D = 9.5mm. Male P = 20.8 mm, female P = 18.3mm. The average for parameters A and P were lower in females, but parameter D was higher in females.ConclusionWe should use, as the secure surface parameter for the proximal third of the MFCA, the superolateral insertion point of the quadratus femoris. The fact that the parameter D of MFCA is greater in females than in males. Disconnecting the quadratus femoris at its point of origin in the isquio may offer greater security to MFCA than doing it at the point of femoral insertion. Level of Evidence.

The origin of the medial circumflex femoral artery: a meta-analysis and proposal of a new classification system

“…Accurate data regarding the artery may help reduce the incidence of avascular necrosis of the femoral head during embolization and hip surgery (Kalhor et al, 2009; Oide, 1979). For example, the KL approach, a common orthopedic technique used in acetabular fractures, poses a significant risk of vascular iatrogenic injury to the MCFA, especially when coupled with a poor understanding of the artery’s anatomy (Freitas et al, 2012). …”

“…In orthopedic surgeries of the hip region, the Kocher–Langenbeck (KL) approach is an important technique allowing for optimum exposure to certain acetabular fractures, most notably those affecting the posterior component of the acetabulum. Without proper anatomical information on this region there is a substantial risk of vascular injury to the MCFA (Freitas et al, 2012). …”