CONCLUSIONS 1- The bifurcation of the tibial nerve into the media

CONCLUSIONS 1- The bifurcation of the tibial nerve into the medial and lateral plantar branches occurred under the flexor retinaculum in 88% of the legs, located, in 70% of the cases, in an area between 10mm proximal and distal to the MCA. 2 – The medial calcaneal branch presented considerable variation both in its origin and number of branches and in its location then in relation to the tarsal tunnel. The presentation of one branch with origin from the tibial nerve, in the tunnel or proximal to the tunnel, was observed the most frequently (58%). 3 – The lower calcaneal branch was always present and with a certain degree of variation in relation to its origin. The presentation of single branch originating from the lateral plantar nerve was the most constant (70%).

Footnotes All the authors declare that there is no potential conflict of interest referring to this article. Study conducted in the Plastic Surgery Discipline of Hospital das Cl��nicas of the School of Medicine of Universidade de S?o Paulo (FMUSP), S?o Paulo – SP, Brazil.
When orthopedists come across a diaphyseal fracture of a long bone, such as the femur, they request orthogonal radiographs (anteroposterior and lateral) of the affected region to understand the fracture lines and for preoperative planning. In the case of an acetabular fracture, this is not possible since the lateral radiograph is useless for viewing the fracture due to the considerable overlap of images. The treatment of acetabular fractures is one of the most complex subjects in orthopedics.

It involves great technical difficulty due to the involvement of a weight-bearing joint, profound and surrounded by neurovascular structures; due to the progressive increase in the number of cases, resulting from high-energy accidents; and due to the improvement of rescue systems, which are able to save the life of the polytrauma patient.1-3 Until early in this century closed reduction was the recommended treatment, and patients rarely resumed functional activities at an early stage.1 The anatomical complexity of the region hinders not only the understanding of the fracture lines and deviations, but also the planning of the surgical approach. In 1964, Judet et al.4 published a classification of this type of fracture based on three radiographic views, thus allowing the determination of the type of fracture and its treatment.

Other classifications used are: anatomical; that of the AO group; and universal based on the Judet and Letournel classification. The AO group classification maintains its alphanumeric pattern, where the acetabular fracture is a type GSK-3 62 fracture with its modifiers A, B and C as the complexity increases and the prognosis of the injury becomes worse. The most widely used and accepted classification continues to be that of Judet and Letournel, yet there is controversy regarding the accuracy and intra- and interobserver concordance in the classification of these fractures.

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