Track topics on Twitter Track topics that are important to you
We report on magnetic resonance neurography (MRN) as a supplementary diagnostic tool in sciatic nerve injection injury. The object of the study was to test if T2-weighted (w) contrast within the sciatic nerve serves as an objective criterion for sciatic injection injury. Three patients presented with acute sensory and/or motor complaints in the distribution of the sciatic nerve after dorsogluteal injection and underwent MRN covering gluteal, thigh and knee levels. Native and contrast-enhanced T1-w images were employed to identify the tibial and peroneal division of the sciatic nerve while T2-w images with fat suppression allowed visualization of the site and extent of the nerve lesion. MRN in the two patients with clinically severe sensory and motor impairment correctly depicted sciatic injury: continuity of the T2-w lesion within the nerve at the lesion site and distal to it corresponded well to severe injury confirmed by NCS/EMG as axonotmetic or neurotmetic. Topography of the T2-w lesion on cross-section corresponded to predominant peroneal involvement; moreover, associated denervation patterns of distal target muscles were revealed. One of these patients completely recovered with concomitant complete regression of MRN abnormalities on follow-up. The third patient experienced transient sensory and mild motor impairment with complete recovery after 2 weeks. In this patient, T2-w signal within the nerve and distal target muscles remained normal indicating only mild, non-axonal nerve affliction. Our case series shows that MRN can be very useful in precisely determining the site of sciatic injection injury and may provide diagnostic criteria for the assessment of lesion severity and recovery.
Department of Neuroradiology, University of Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany, firstname.lastname@example.org.
This article was published in the following journal.
Name: Journal of neurology
Piriformis muscle syndrome (PMS) is a controversial neuromuscular disorder that is presumed to involve compression neuropathy of the sciatic nerve at the level of the piriformis muscle. Botulinum toxi...
Neurological injuries following peripheral nerve blocks are a relatively rare yet potentially devastating complication depending on the type of lesion, affected extremity, and duration of symptoms. Me...
CDP-choline (cytidine-5'-diphosphocholine) improves functional recovery, promotes nerve regeneration, and decreases perineural scarring in rat peripheral nerve injury. The aim of the present study was...
Ebselen is an organoselenium compound which has strong antioxidant and anti-inflammatory effects. We investigated the neuroprotective role of ebselen pretreatment in rats with experimental sciatic ner...
Injury severity, operative technique and nerve regeneration are important factors to consider when constructing a model of peripheral nerve injury. Here, we present a novel peripheral nerve injury mod...
Sciatic nerve blocks are frequently used for anesthesia or analgesia for surgery of the lower legs. Currently, if ultrasound is used to find the sciatic nerve, the leg must be raised to l...
The primary purpose of this research study is to determine the safety of injecting ones own Schwann cells to augment sural nerve autografts after a severe, non-lacerating injury to the sci...
This study aims to compare the sensory and motor block duration and the incidence of nerve injury after sciatic nerve block between diabetic and non-diabetic patients, and screen for the f...
The purpose of this study is to compare the incidence of postoperative symptoms of neurologic injury after a single shot infragluteal-parabiceps sciatic nerve block versus a continuous inf...
This prospective, double-blinded study evaluates intraneural ropivacaine 1% Minimal Effective Volume (MEV90) for ultrasound-guided (US) popliteal sciatic nerve block, with Up-and-down meth...
A nerve which originates in the lumbar and sacral spinal cord (L4 to S3) and supplies motor and sensory innervation to the lower extremity. The sciatic nerve, which is the main continuation of the sacral plexus, is the largest nerve in the body. It has two major branches, the TIBIAL NERVE and the PERONEAL NERVE.
Disease or damage involving the SCIATIC NERVE, which divides into the PERONEAL NERVE and TIBIAL NERVE (see also PERONEAL NEUROPATHIES and TIBIAL NEUROPATHY). Clinical manifestations may include SCIATICA or pain localized to the hip, PARESIS or PARALYSIS of posterior thigh muscles and muscles innervated by the peroneal and tibial nerves, and sensory loss involving the lateral and posterior thigh, posterior and lateral leg, and sole of the foot. The sciatic nerve may be affected by trauma; ISCHEMIA; COLLAGEN DISEASES; and other conditions. (From Adams et al., Principles of Neurology, 6th ed, p1363)
Traumatic injury to the abducens, or sixth, cranial nerve. Injury to this nerve results in lateral rectus muscle weakness or paralysis. The nerve may be damaged by closed or penetrating CRANIOCEREBRAL TRAUMA or by facial trauma involving the orbit.
The lateral of the two terminal branches of the sciatic nerve. The peroneal (or fibular) nerve provides motor and sensory innervation to parts of the leg and foot.
The medial terminal branch of the sciatic nerve. The tibial nerve fibers originate in lumbar and sacral spinal segments (L4 to S2). They supply motor and sensory innervation to parts of the calf and foot.