The medial plantar nerve (MPN) is the large division, of the tibial nervegiving cutaneous, muscular, articular and digital nerve branches to the medial aspect of thesole of the foot.
On its distalcourse, the MPN accompanies themedial plantar artery, which is also a major landmark to identifythe nerve.
Originating under thelaciniate ligament the nerve passes below theabductor hallucis muscle and gives off a proper digital plantar nerveof thegreat toesupplying the flexor hallucis brevis muscle and the skin on the medial side of the great...
Methods and materials
HRUS with high-frequency probes (15-22MHz) was used to locate the MPN in 5 fresh anatomic specimens at both feet.HRUS-guided ink-marking and consecutiveanatomicaldissectionverified the correct nerve identification in the specimen. HRUS was performed in ten healthy volunteers to evaluate thefeasibility of the MPN course, in addition, five of them underwent 3T MRN for HRUS-MRN comparability.
Five patients referred for suspected MPN lesions were assessed for any pathological findings on HRUS and MRN.
MPN was clearly visible in all anatomical specimens and healthy volunteers evaluated on HRUS and 3T MRN equally. Anatomical dissection verified the accurate identification of the MPN in all sonographically ink-marked cadavers.
In addition,patients withvariousMPNabnormalitieswere identified inHRUS and MRN equally, such as idiopathicand iatrogenic neuritis, compression neuropathy, traction syndrome of the medial plantar nerve, a cut injury, postoperative neuromas and an intraneural ganglion cyst of the nerve. Two of the pathologies are demonstrated in the illustrations[4-6].
HRUS and MRN can reliably visualize the normal and diseased MPN.HRUS and MRNcan, therefore, be considered a reliable technique for diagnostic assessment of MPN pathologies, and enable image-guided interventional therapies.
Personal information and conflict of interest
S. A. Jengojan; Vienna/AT - nothing to disclose G. Bodner; Vienna/AT - nothing to disclose D. V. Moser; Vienna/AT - nothing to disclose
 Kowalska, B., and Sudoł-Szopińska, I. (2012). Normal and sonographic anatomy of selected peripheralnerves. Part III: Peripheral nerves of the lower limb. J. Ultrason.12, 148–163.
 Oh SJ, Lee KW. Medial plantar neuropathy. Neurology. 1987;37(8):1408–10.
 Trescot, A.M. (2016). Peripheral nerve entrapments: Clinical diagnosis and management. Peripher. Nerve Entrapments Clin. Diagnosis Manag. 1–902.
Rask MR. Medial plantar neurapraxia (jogger’s foot): report of 3 cases. Clin Orthop Relat Res. 1978;134:193–5.
 Arakawa T, Sekiya S, Terashima T, Miki A. Pseudoganglion on the connecting branch between the...