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Journal of Long-Term Effects of Medical Implants

Publication de 4  numéros par an

ISSN Imprimer: 1050-6934

ISSN En ligne: 1940-4379

SJR: 0.184 SNIP: 0.485 CiteScore™:: 1.1 H-Index: 39

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Establishing Normal Values of the Proximal Median Motor Nerve−A Study of the Pronator Teres and Flexor Carpi Radialis in Healthy Volunteers

Volume 16, Numéro 5, 2006, pp. 341-348
DOI: 10.1615/JLongTermEffMedImplants.v16.i5.30
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RÉSUMÉ

The importance of normative peripheral nerve data is increasing due to advances in medical implantation, microsurgical suturing, and tubulization repair techniques. Because the median nerve is often affected, its normal values must be reliable.
Although the distal portion of the median nerve has been well studied using electrodiagnostic methods, the proximal forearm segment has not. This study establishes a normative database for median nerve conduction to the pronator teres (PT) and to the flexor carpi radialis (FCR). Two hundred-eight asymptomatic subjects were studied using proximal median motor stimulation at 10 cm. Latencies, amplitudes, areas, and durations were recorded.
To the pronator teres: The upper limit for normal (ULN) motor latency was 3.5 ms (2.9 ± 0.3 ms). The side-to-side latency difference was ≤ 0.5 ms. Overall, the lower limit of normal (LLN) amplitude was 2.2 mV. However, this decreased to 1.5 mV in the over-50 age group.
To the flexor carpi radialis: The ULN motor latency was 3.6 ms (2.8 ± 0.4 ms). The side-to-side latency difference was ≤ 0.7 ms. Overall, the LLN amplitude was 2.3 mV. However, this decreased to 1.7 mV in the over-50 group.
This study produced a large database of normal results for the median motor nerve conduction to the pronator teres and to the flexor carpi radialis. The 10-cm techniques are easily reproducible and helpful when evaluating this portion of the median nerve.

CITÉ PAR
  1. Chen Shan, Andary Michael, Buschbacher Ralph, Del Toro David, Smith Benn, So Yuen, Zimmermann Kuno, Dillingham Timothy R., Electrodiagnostic reference values for upper and lower limb nerve conduction studies in adult populations, Muscle & Nerve, 54, 3, 2016. Crossref

  2. Foley Brian S., Roslonski Eric T., Buschbacher Ralph M., Reference Values for Median Nerve Conduction to the Pronator Quadratus, Archives of Physical Medicine and Rehabilitation, 87, 1, 2006. Crossref

  3. Gentili Giuliano, Di Napoli Mario, Elbow – Forearm, in The Median Nerve, 2015. Crossref

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