Tibialis posterior, flexor hallucis longus, flexor digitorum Tibialis anterior, extensor hallucis longus, extensor digitorumĭeep fibular nerve andanterior tibial vesselsįibularis longus and brevis Superficial fibular nerve Together with the four adductors the longus, brevis, magnus andīiceps femoris, semitendinosus and semimembranosus muscles Pectineus, external obturator, and the gracilis muscles, Vastus lateralis, vastus intermedius vastus medialis and the Sartorius muscle and the four quadriceps the rectus femoris, This is in contrast to an upper motor neuron lesion, which often presents with spastic paralysis – paralysis accompanied by severe hypertonia.Ĭompartment Muscles Neurovascular Structures One major characteristic used to identify a lower motor neuron lesion is flaccid paralysis – paralysis accompanied by loss of muscle tone. This is in contrast to a lower motor neuron lesion, which affects nerve fibers traveling from the anterior horn of the spinal cord or the cranial motor nuclei to the relevant muscle(s). Compartments of the Thigh Compartment Muscles Neurovascular Structures Anterior compartment sartorius muscle and the four quadriceps – the rectus femoris, vastus lateralis, vastus intermedius vastus medialis and the articularis genus femoral nerve Medial compartment pectineus, external obturator, and the gracilis muscles, together with the four adductors – the longus, brevis, magnus and minimus obturator nerve Posterior compartment biceps femoris, semitendinosus and semimembranosus muscles sciatic nerve Compartments of the Leg Compartment Muscles Neurovascular Structures Anterior compartment Tibialis anterior, extensor hallucis longus, extensor digitorum longus and peroneus tertius Deep fibular nerve andanterior tibial vessels Lateral compartment Fibularis longus and brevis Superficial fibular nerve Deep posterior compartment Tibialis posterior, flexor hallucis longus, flexor digitorum longus and Popliteus Tibial nerve, posterior tibial artery and posterior tibial vessels such as the fibular artery Superficial posterior compartment Gastrocnemius, soleus and plantaris Medial sural cutaneous nerve Compartments of the Foot Compartment Muscles Neurovascular Structures Medial Abductor hallucis, flexor hallucis brevis Lateral Abductor digiti minimi, flexus digiti minimi brevis Interosseous (4x) Intrinsic muscles between the 1st and 5th metatarsals Superficial central Flexor digitorum brevis Central Quadratus plantae Deep central Adductor hallucis posterior tibial neurovascular bundle An upper motor neuron lesion (also known as pyramidal insufficiency ) is a lesion of the neural pathway above the anterior horn cell of the spinal cord or motor nuclei of the cranial nerves.
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