Biomaterial Database

Somatosensory evoked potentials (SSEPs) in rheumatoid cervical subluxation. 1987

G Toolanen, and M Knibestöl, and S E Larsson, and K Landman

Somatosensory evoked potentials (SSEPs) were recorded in 34 patients with severe rheumatoid arthritis. Eighteen had atlanto-axial subluxation and 16 had no roentgenological evidence of cervical subluxation. Four patients in the group with cervical subluxation showed pathological SSEP values from both median and tibial nerves indicating conduction block in the upper cervical medulla. In the group with no cervical subluxation, 6 patients had prolonged SSEP latency, 5 of these on recordings from the tibial nerves with normal median nerve latencies and one with only bilaterally prolonged median nerve latencies. The pathological SSEP findings in the former group of patients we attribute to the cervical subluxation, while the findings in the latter group might be related to spinal cord vasculitis or extradural granulation tissue. The SSEP method can be useful in providing objective evidence for spinal cord lesions in patients with rheumatoid cervical subluxation.

UI	MeSH Term	Description	Entries
D008475	Median Nerve	A major nerve of the upper extremity. In humans, the fibers of the median nerve originate in the lower cervical and upper thoracic spinal cord (usually C6 to T1), travel via the brachial plexus, and supply sensory and motor innervation to parts of the forearm and hand.	Median Nerves,Nerve, Median,Nerves, Median
D011930	Reaction Time	The time from the onset of a stimulus until a response is observed.	Response Latency,Response Speed,Response Time,Latency, Response,Reaction Times,Response Latencies,Response Times,Speed, Response,Speeds, Response
D002574	Cervical Vertebrae	The first seven VERTEBRAE of the SPINAL COLUMN, which correspond to the VERTEBRAE of the NECK.	Cervical Spine,Cervical Spines,Spine, Cervical,Vertebrae, Cervical
D004204	Joint Dislocations	Displacement of bones from their normal positions at a joint.	Inferior Dislocation,Joint Subluxations,Luxatio Erecta,Dislocation, Joint,Dislocations, Joint,Inferior Dislocations,Joint Dislocation,Joint Subluxation,Subluxation, Joint,Subluxations, Joint
D005073	Evoked Potentials, Somatosensory	The electric response evoked in the CEREBRAL CORTEX by stimulation along AFFERENT PATHWAYS from PERIPHERAL NERVES to CEREBRUM.	Somatosensory Evoked Potentials,Evoked Potential, Somatosensory,Somatosensory Evoked Potential
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001172	Arthritis, Rheumatoid	A chronic systemic disease, primarily of the joints, marked by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures. Etiology is unknown, but autoimmune mechanisms have been implicated.	Rheumatoid Arthritis
D013118	Spinal Cord Diseases	Pathologic conditions which feature SPINAL CORD damage or dysfunction, including disorders involving the meninges and perimeningeal spaces surrounding the spinal cord. Traumatic injuries, vascular diseases, infections, and inflammatory/autoimmune processes may affect the spinal cord.	Myelopathy,Spinal Cord Disorders,Myelopathies,Spinal Cord Disease,Spinal Cord Disorder
D013979	Tibial Nerve	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.	Medial Plantar Nerve,Posterior Tibial Nerve,Medial Plantar Nerves,Nerve, Medial Plantar,Nerve, Posterior Tibial,Nerve, Tibial,Nerves, Medial Plantar,Nerves, Posterior Tibial,Nerves, Tibial,Plantar Nerve, Medial,Plantar Nerves, Medial,Posterior Tibial Nerves,Tibial Nerve, Posterior,Tibial Nerves,Tibial Nerves, Posterior