Explanation:
The anterior portal is typically placed at the intersection of a sagittal line drawn distally from the ASIS and a transverse line from the greater trochanter. The lateral femoral cutaneous nerve (LFCN) courses highly variably in this region and is the most commonly injured nerve during anterior portal placement. Reference: Byrd JW, 'Hip arthroscopy: The supine position', Instr Course Lect (2003).