plantar or lateral foot tingling
tibial nerve enervates and causes foot tingling on plantar and lateral side. this mat be due to nerve impingement by muscles of posterior and lateral parts of lower leg that it enervates. this sensations of tingling and numb foot is felt in the posterolateral side of the leg, lateral side of the foot, and the sole of the foot.
these are enervated by tibial nerve which orginates at popliteal fossa, right behind the knee. its nerve root is sciatic nerve that starts at L4-S5.
The following muscles are enervated by tibial nerve may pinch this nerve, causing foot tingling and numbness.
- Popliteus – Laterally rotates the femur on the tibia to unlock the knee.
- Flexor Hallucis Longus – Flexes the big toe and plantar flexes the ankle.
- Flexor digitorum Longus – Flexes the other digits and plantar flexes the ankle.
- Tibialis Posterior – Inverts the foot and plantar flexes the ankle.
- Plantaris – Plantar flexes the ankle.
- Soleus – Plantar flexes the ankle.
- Gastrocnemius – Plantar flexes the ankle and flexes the knee.
Tibial nerve enervate the entire sole of foot by branching out into:
- Medial calcaneal branches: arise within the tarsal tunnel, and innervate the skin over the heel.
- Medial Plantar Nerve: Innervates the plantar surface of the medial three and a half digits starting with big toes, and the associated sole area.
- Lateral Plantar Nerve: Innervates the plantar surface of the lateral one and a half digits, and the associated sole area.
dorsal foot tingling
muscles impinging a nerve in lateral compartment of the leg can cause sensation of foot tingling over the dorsum of the foot, apart from the webbing between the hallux and the second digit. It also supplies the anterior and lateral aspect of the inferior third of the leg.
The superficial fibular nerve originates from L4-S1 and supplies the fibularis longus and the fibularis brevis that span the lateral compartment of the lower leg.
fibularis longus and the fibularis brevis evert the foot (turn it out), and thus act at the subtalar joint. Both muscles also weakly contribute to plantarflexion, although this action is mainly carried out by the gastrocnemius and the soleus muscles.
The superficial fibular nerve(superficial peroneal nerve) feeds these muscles.
Ankle sprain or twisting can cause paraesthesia, pins and needles sensation) in dorsum of foot, due to nerve entrapment. damage to fibular or perforating wound along the course of this nerve can cause foot tingling on dorsal side as well as numbing of lateral anterior lower leg. since enervated muscles are effected, such injury would also effect foot eversion ability.
specialty massage can help resolve impingement!