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Updated: Aug 9, 2026
15:04
An Anatomical Study of Nerves at Risk During Minimally Invasive Hallux Valgus Surgery
Published on: February 17, 2018
Variations of the posterior interosseous nerve
A A Missankov1, A K Sehgal, U Mennen
1Department of Human Anatomy, Medical University of Southern Africa, Medunsa.
Journal of Hand Surgery (Edinburgh, Scotland)
|August 29, 2000
Summary
This study details the branching patterns of the posterior interosseous nerve in South African cadavers. Understanding these anatomical variations is crucial for surgical procedures and treating nerve injuries.
Area of Science:
- Anatomy
- Neuroscience
- Orthopedics
Background:
- The posterior interosseous nerve (PIN) is a critical motor nerve in the forearm.
- Variations in its branching pattern can impact surgical approaches and diagnosis of nerve pathologies.
Purpose of the Study:
- To investigate and document the branching patterns of the posterior interosseous nerve.
- To identify and report anatomical variations of the PIN in a specific population.
Main Methods:
- Dissection of 58 cadaver forearms from black South African individuals.
- Systematic documentation of the nerve's branching order and identification of variations.
Main Results:
- A common branching pattern was observed in 74% of specimens.
- Significant variations (26%) were noted, with some previously unreported.
- The most frequent branching order involved muscles like extensor carpi radialis brevis and supinator.
Conclusions:
- Knowledge of typical and variant PIN branching patterns is essential for surgeons.
- Understanding these variations aids in precise surgical interventions and accurate diagnosis of nerve entrapment or injury.
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