Sciatic Nerve and its Branches

A 38-year-old woman from Bangalore presents to the emergency department with acute onset weakness of the right foot (inability to dorsiflex the ankle or evert the foot) and foot drop. She reports tripping over a low step 2 days ago and falling directly on the lateral aspect of her right knee. On examination, there is tenderness over the fibular head region. Sensation is preserved over the medial sole of the foot but diminished over the lateral leg and dorsum of the foot. Ankle plantarflexion and toe flexion are intact. What is the most likely diagnosis?

A 52-year-old man from Delhi presents with inability to invert the foot and loss of sensation over the medial border of the sole. Which nerve injury best explains these findings, and what is the key distinguishing feature from a superficial peroneal nerve injury?

A 52-year-old man from Delhi presents with a 3-week history of progressive weakness in his right leg, particularly affecting hip extension and knee flexion. On examination, he has marked weakness of the gluteus maximus and biceps femoris muscles. Sensation is diminished over the posterior and lateral aspects of the leg and dorsum of the foot. He denies bowel or bladder involvement. An MRI of the pelvis reveals a 4 cm mass compressing the sciatic nerve at the level of the greater sciatic foramen. Which of the following is the most likely site of nerve compression?

During a routine examination of a patient with sciatic nerve injury, the examiner tests for the most common site of injury to the sciatic nerve in the lower limb. Which anatomical location represents the most frequent site of sciatic nerve injury in clinical practice?

A 52-year-old man from Delhi presents to the emergency department with acute onset severe pain in the left buttock and posterior thigh, radiating down to the foot, following a fall onto his left hip. On examination, he has weakness of hip extension and knee flexion, with diminished sensation over the lateral leg and dorsum of foot. An X-ray shows a posterior hip dislocation with an associated sciatic nerve injury. After initial stabilization and reduction of the dislocation, what is the most appropriate next step in management of the nerve injury?