Anatomical Landmarks for Decompression of Common Peroneal Nerve: A Cadaveric study

Area of Science:

• Anatomy
• Orthopedic Surgery
• Neuroscience

Background:

• Common peroneal nerve (CPN) neuropathy can stem from trauma or iatrogenic causes.
• Accurate incision placement is crucial for effective CPN decompression.
• This study sought to identify surface landmarks for optimal CPN decompression.

Purpose of the Study:

• To define surface anatomical landmarks for common peroneal nerve (CPN) decompression.
• To establish reliable incisional guidelines for orthopedic surgeons.
• To improve surgical outcomes for CPN neuropathy.

Main Methods:

• Dissection of 30 lower limbs from 15 cadavers with knees flexed at 90 degrees.
• Measurement of CPN compression sites and distances from anatomical landmarks.
• Determination of CPN angle relative to the fibular axis by two orthopedic surgeons.

Main Results:

• The CPN exhibited a mean angle of 37.4 ± 6.6 degrees from the fibular axis at the fibular neck.
• Key distances from bony landmarks (fibular head, tip, Gerdy tubercle) and tibial landmarks (tubercle, crest) to the CPN were recorded.
• Compression lengths between intermuscular septa were quantified.

Conclusions:

• A 37-degree orientation from the fibular neck offers a reproducible guideline for CPN decompression incision planning.
• Tibial tubercle and crest serve as valuable confirmatory landmarks for complete intermuscular septa release.
• These anatomical guidelines enhance precision in CPN decompression surgery.