Nerves of Lower Limb and Their Injuries, S-Ii-Lm-0120
Nerves of Lower Limb and Their Injuries, S-Ii-Lm-0120
Nerves of Lower Limb and Their Injuries, S-Ii-Lm-0120
LEARNING OBJECTIVES
• Know the names of nerves and their main branches innervating lower limb
• Know the nerves closely related to a bone or other structure of lower limb
• Know the main area and loss of function if particular nerve is injured
• Define and under stand terms neuritis, anesthesia, par aesthesia, paralysis, neuralgia,
sciatica
LECTURE OUTLINE
Presentation
• Sharp pain in the course of distribution
SUPERIOR GLUTEAL NERVE
• Branch of sacral plexus
• Enters gluteal region from pelvis through greater sciatic foramen above piriformis
• Runs between gluteus medius and minimus
Muscles innervated
• Gluteus medius
• Gluteus minimus
• Tensor fascia lata
Muscle paralyzed
• Gluteus maximus muscle
Motor loss
• Impairment of hip extension and lateral rotation
• Difficulty in raising the body from sitting or stooping position
Sensory loss
• All sensation below knee below the knee except the medial aspect of leg and foot upto
ball of big toe.
• Loss of sensation of sole makes the patient vulnerable to trophic ulcers
SCIATICA
• Pain along the sensory distribution of sciatic nerve
• Posterior aspect of thigh
• Posterior and lateral sides of leg
• Lateral part of foot
Causes
• Prolapse of intervertebral disc
• Intrapelvic tumor
• Inflammation of sciatic nerve