Of these, the puboischiofemoralis externus of reptiles appears to be represented by the obturator externus of mammals, and, similarly, the ischiotrochantericus of reptiles appears to be the homologue of the obturator internus of mammals.
The initial obturator was modified with the application of a soft lining material and the patient subsequently discharged with instructions on the insertion and removal of the obturator.
To describe our surgical approach in a rare case of deep infiltrating endometriosis of the obturator internus muscle with obturator nerve involvement.
Four weeks later, the patient was returned to the operating room for removal and modification of the obturator.
Conclusions: Motor conduction properties of the obturator nerve can be assessed by the method described, particularly to differentiate between peripheral, plexus, or radicular lesions that involve the obturator nerve.
To reach this position, the retractor punctured the obturator externus, the obturator membrane and fibres of the obturator internus.
The obturator nerve is vulnerable to injury by retractors as it exits the pelvis through the obturator canal, in the superolateral region of the obturator foramen.
The extra-pelvic branches of the obturator nerve, the anterior and posterior divisions, were not in close proximity to the retractor following their emergence through the obturator canal.
The anterior and posterior branches of the obturator nerve were defined, following their emergence through the obturator canal and their relationship to the body of the examined retractor.
Pelvic rotation was assessed by measuring the widths of the obturator foramens and then calculating the foramen obturator index of Tönnis (1987).
