LATERAL CUTANEOUS NERVE
Nerve compression syndromes around the hip joint are not particularly common although there are a few important entities to consider.

Meralgia Paraestetica
refers to compression of the lateral cutaneous nerve of thigh.
This nerve can be identified as it passes close to the anterior superior iliac spine.
Lying close to this but more superiorly and medially is another branch of the lumbar plexus, the ilioinguinal nerve.
This nerve lies between the internal oblique muscle and the transverse abdominis muscle.
Both of these nerves are best identified using ultrasound when a guided injection can also be administered.

Other Nerves
The obturator nerve can be identified deep to the pectineus muscle
Femoral nerve in the femoral triangle lateral to the artery (NAVEL = nerve, artery,vein,e, lymphatics)
Long saphenous nerve deep to sartorius muscle
Genital brach of genitofemoral nerve in the inguinal canal