Postpartum Sciatic Neuropathy After Uncomplicated Vaginal Delivery

Area of Science:

• Neurology
• Obstetrics
• Nerve Disorders

Background:

• Postpartum neuropathies are relatively common, with femoral, peroneal, and lateral femoral cutaneous neuropathies being frequently observed.
• Sciatic mononeuropathy during the peripartum period is considered rare, with prior reports primarily linked to cesarean sections.

Observation:

• This case series details two young women who developed sciatic mononeuropathy with foot drop immediately following uncomplicated vaginal deliveries.
• Clinical presentation included flail foot, reduced hamstring strength, sensory disturbances in the leg and foot, and absent ankle reflexes.

Findings:

• Magnetic Resonance Imaging (MRI) ruled out spinal cord, nerve root, or plexus involvement.
• Electrodiagnostic studies confirmed sciatic mononeuropathy proximal to the short head of the biceps femoris muscle.
• Both patients experienced complete resolution of motor weakness within three months with conservative management.

Implications:

• The findings suggest that sciatic mononeuropathy, though rare, can occur after vaginal delivery, not exclusively after cesarean sections.
• This underscores the importance for clinicians to consider postpartum sciatic neuropathy in the differential diagnosis of lower extremity weakness after both operative and uncomplicated vaginal deliveries.
• Increased awareness may lead to earlier diagnosis and appropriate management, potentially improving patient outcomes.