Intense open tibial fracture! 😷
There are many muscles that lie within the lower leg. They are commonly divided in 3 compartments (anterior, lateral, posterior) that each have an associated nerve and primary function. Let's get to it!
Anterior Compartment: Innervated by the deep fibular/peroneal nerve and primarily dorsiflexes the foot.
* Tibialis Anterior
* Extensor Digitorum Longus
* Extensor Hallucis Longus
* Fibularis (peroneus) Tertius
Lateral Compartment: Innervated by the superficial fibular/peroneal nerve and primarily everts the foot.
* Fibularis Longus
* Fibularis Brevis
Posterior Compartment: Innervated by the tibial nerve and primarily plantarflexes the foot.
* Flexor Digitorum Longus
* Flexor Hallucis Longus
* Tibialis Posterior
Clinical Relevance: The deep and superficial peroneal nerves mentioned above branch from a more proximal nerve known as the common peroneal nerve. This nerve passes through the fibular neck before giving off it many branches. Fracture of the fibular neck/head can cause a laceration of this nerve resulting in foot drop, where dorsiflexion of the foot is compromised and the foot drags (the toe points) during walking; and in sensory loss to the dorsal surface of the foot and portions of the anterior, lower-lateral leg.
If you or a loved one are experiencing these conditions, go to the emergency room immediately to prevent any further complications. Stay safe and stay healthy everyone! 🤓
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