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Surgical approach and nerve injury

Choice of incision, gluteal nerve and skin necrosis risk, lateral cutaneous nerve of thigh injury.

9 questions 2 source pages

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Q1Why is a longitudinal incision preferred in this approach?▸

Q2Describe the incision used.▸

Q3What structures are at risk of damage in this approach?▸

Q4What is the lateral cutaneous nerve of the thigh and from where does it arise?▸

Is a cutaneous nerve that innervates the skin on the lateral part of the thigh
From the lumbar plexus, L2, L3 dorsal branches

Q5Describe the course of the lateral cutaneous nerve of the thigh into the thigh.▸

Passes under the inguinal canal, 2 cm medial to the ASIS
Splits and pierces the fascia, running over the lateral thigh in the subcutaneous region, superficial to sartorius

Q6Where does the nerve cross and divide?▸

Most commonly crosses the lateral border of sartorius 5.4 cm distal and 1.2 cm medial to ASIS
Divides into anterior and posterior divisions on the surface of sartorius 5 cm distal to ASIS
27% divide before the inguinal ligament

Q7What are the common anatomical variations of the nerve?▸

Q8What does the anterior branch communicate with?▸

Communicates with the femoral nerve and saphenous nerve --> peripatellar plexus

Q9Where can the lateral cutaneous nerve of the thigh be injured, and which condition does it cause?▸

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