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1 Tibial nerve. N. tibialis. Nerve arising from L4-S3. It is the second terminal branch of the sciatic nerve. It passes through the popliteal fossa, disappears beneath the tendinous arch of the soleus muscle and proceeds, accompanied by the posterior tibial artery, around the medial malleolus to the sole of the foot. A

2 Muscular branches. Rami musculares. Rami to the gastrocnemius, plantaris, soleus and the deep flexors at the lower leg. A

3 interosseous nerve of leg. N. interosseus cruris. It is accompanied by the anterior tibial artery and contains fibers for the bones and ti-biofibular joint. A

4 Medial sural cutaneous nerve. N. cutaneus surae medialis. Nerve that arises from the tibial nerve in the popliteal fossa, then descends sub-fascially lateral to the small saphenous vein and joins the communicating branch of the common fibular nerve to form the sural nerve. A B

5 Sural nerve. N. suralis. Continuation of the medial sural cutaneous nerve after its union with the communicating branch of the common fibular nerve. B

6 Lateral dorsal cutaneous nerve. N. cutaneus dorsalis lateralis. It passes to the lateral aspect of the dorsum of the foot and anastomoses with the intermediate dorsal cutaneous nerve. B

7 Lateral calcaneal branches. Rami calcanei laterales. Lateral branches to the calcaneus. B

8 Medial calcaneal branches. Rami calcanei mediales. Branches arising directly from the tibial nerve. They pass to the medial aspect of the calcaneus. B

9 Medial plantar nerve. N. plantaris medialis. The larger terminal branch of the tibial nerve. It proceeds beneath the flexor retinaculum and the abductor hallucis to the sole of the foot which it supplies, as well as the skin and the flexor hallucis brevis and flexor digitorum brevis. A

10 Common plantar digital nerves. Nn. digitales plantares communes. They course in the interval between toes 1-4 and divide to form the proper plantar digital nerves. A

11 Proper plantar digital nerves. Nn. digitales plantares proprii. Cutaneous nerves passing on the tibial and fibular sides of the flexor aspect of the medial 3V2 toes. They supply the distal phalanges, including their dorsal aspect. A

12 Lateral plantar nerve. N. plantaris lateralis. Smaller terminal branch of the tibial nerve. It passes beneath the flexor digitorum brevis medial to the lateral plantar artery as far as the base of the 5th metatarsal bone. A

13 Superficial branch. Ramus superficialis. Perdom-inantly sensory branch of lateral plantar nerve. A

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Essentials of Human Physiology

Essentials of Human Physiology

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