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Lateral femoral cutaneous nerve
90%
691/769
Femoral nerve
6%
46/769
Femoral artery
2%
15/769
Superior gluteal nerve
1%
7/769
Sciatic nerve
0%
2/769
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The anterior portal for hip arthroscopy is approximately 6 cm distal to the anterior superior iliac spine, penetrating the muscle belly of the sartorius and the rectus femoris before entering through the anterior capsule. The lateral femoral cutaneous nerve is divided into three or more branches at the level of this portal and may be injured during portal placement. The femoral nerve and artery are more medial and at less risk. The superior gluteal and sciatic nerves are posterior and not at risk with an anterior portal.
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