Lumbar Microdiscectomy for Neural Compression

Clinical Presentation and Findings

A 46-year-old male patient presents with a 2-month history of right buttock, groin, and knee pain with anterior shin numbness and occasional knee buckling, especially when using stairs 1
Physical examination reveals motor weakness (4/5 right quadriceps strength) 1
Diminished patellar reflex (1+ on right vs 2+ on left) 3
Antalgic gait with hyperextended right leg 2
MRI findings show a new large right cranial disc extrusion spanning the right ventral epidural space with mass effect impingement of the L4 nerve root 1, 3

Patient has clear signs and symptoms of neural compression (radiculopathy) associated with the L4-5 level 2
Advanced imaging (MRI) confirms a large disc extrusion with nerve root compression at the level corresponding with clinical findings 1, 2
Patient's activities of daily living are limited by symptoms (antalgic gait, knee buckling on stairs) 2
Other reasonable sources of pain have been ruled out 2
Severity of neurological deficit: the patient demonstrates objective neurological deficits (quadriceps weakness, diminished reflexes, and gait abnormality) that correlate with the MRI findings 2
Risk of progression: delaying surgical intervention in the presence of progressive neurological deficits could lead to permanent nerve damage 3
Failed conservative treatment: while formal physical therapy documentation is incomplete, the patient has already undergone interventional pain management including rhizotomy, indicating progression through conservative measures 2