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Radial neuropathy

From Wikipedia, the free encyclopedia

Radial neuropathy
Other namesRadial mononeuropathy, Saturday night palsy
The suprascapular, axillary, and radial nerves.
SpecialtyNeurology Edit this on Wikidata
SymptomsWrist drop[1]
CausesBroken bone, Direct nerve injury[2]
Diagnostic methodMRI, Ultrasound[3]
TreatmentCorticosteroid, Pain medication[2]

Radial neuropathy is a type of mononeuropathy which results from acute trauma to the radial nerve that extends the length of the arm.[3] It is known as transient paresthesia when sensation is temporarily abnormal.[4]

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  • Radial Nerve Palsy ,Recovering . Part II- Everything You Need To Know - Dr. Nabil Ebraheim
  • Honeymoon Palsy

Transcription

Signs and symptoms

Symptoms of radial neuropathy vary depending on the severity of the trauma; however, common symptoms may include wrist drop, numbness on the back of the hand and wrist, and inability to voluntarily straighten the fingers. Loss of wrist extension is due to loss of the ability to move of the posterior compartment of forearm muscles.[3][1] In the event of lacerations to the wrist area the symptom would therefore be sensory. Additionally, depending on the type of trauma, other nerves may be affected such as the median nerve and axillary nerves.[5]

Causes

Radial Nerve - Anatomy, Innervation
Humerus - anterior view

There are many ways to acquire radial nerve neuropathy, including:[6]

  • Upper arm - a fracture of the bone
  • Elbow - entrapment of the nerve
  • Wrist - elbow deformity and soft-tissue masses
  • Axilla - here the most common cause is compression. However, a dislocation of the humerus is a possible factor as well. It could also be due to brachial plexus compression.

Mechanism

The mechanism of radial neuropathy is such that it can cause focal demyelination and axonal degeneration.[7] These would be caused via laceration or compression of the nerve in question.[8]

Diagnosis

Radial neuropathy may be diagnosed using MRI, ultrasound, nerve conduction study or electromyography (EMG).[3]

Treatment

Hand tendons

The treatment and management of radial neuropathy can be achieved via the following methods:[3][9][10]

  • Tendon transfer (the origin remains the same but insertion is moved)

Prognosis

Radial neuropathy is not necessarily permanent, though there could be partial loss of movement or sensation. Complications include deformity of the hand in some individuals.[2] If the injury is axonal (the underlying nerve fiber itself is damaged), recovery may take months or years and full recovery may never occur. EMG and nerve conduction studies are typically performed to diagnose the extent and distribution of the damage, and to help with prognosis for recovery.[medical citation needed]. A compressive neuropraxia of the radial nerve (Saturday night palsy) takes between 2 and 12 weeks to recover. It is a common misunderstanding to attribute severe motor weakness of the hand lasting only minutes to hours to radial nerve neuropraxia [1]

Culture and society

There are a number of terms used to describe radial nerve injuries, which are dependent on the causation factor such as:

  • Honeymoon palsy from another individual sleeping on and compressing one's arm overnight.[11]
  • Saturday night palsy from falling asleep with one's arm hanging over the arm rest of a chair, compressing the radial nerve.[12]
  • Saturnine palsy from lead poisoning[13]
  • Squash palsy, from traction forces associated with the sport squash, happens to squash players during periods between matches.[14]

See also

References

  1. ^ a b c Han, Bo Ram; Cho, Yong Jun; Yang, Jin Seo; Kang, Suk Hyung; Choi, Hyuk Jai (1 March 2014). "Clinical Features of Wrist Drop Caused by Compressive Radial Neuropathy and Its Anatomical Considerations". Journal of Korean Neurosurgical Society. 55 (3): 148–151. doi:10.3340/jkns.2014.55.3.148. ISSN 2005-3711. PMC 4024814. PMID 24851150.
  2. ^ a b c "Radial nerve dysfunction: MedlinePlus Medical Encyclopedia". medlineplus.gov. NIH. Retrieved 10 September 2016.
  3. ^ a b c d e "Radial Mononeuropathy: Background, Pathophysiology, Epidemiology". Mdscape. eMedicine. Retrieved 16 August 2016.
  4. ^ "Paresthesia Information Page: National Institute of Neurological Disorders and Stroke (NINDS)". www.ninds.nih.gov. Archived from the original on 2 December 2016. Retrieved 18 August 2016.
  5. ^ Frontera, Walter R.; Silver, Julie K.; Rizzo, Thomas D. Jr. (2014-09-05). Essentials of Physical Medicine and Rehabilitation. Elsevier Health Sciences. p. 129. ISBN 9780323222723. Retrieved 10 September 2016.
  6. ^ "Radial Nerve Lesion (C5-C8) Professional Reference | Patient". Patient. Retrieved 10 September 2016.
  7. ^ Wang, Jack T.; Medress, Zachary A.; Barres, Ben A. (9 January 2012). "Axon degeneration: Molecular mechanisms of a self-destruction pathway". The Journal of Cell Biology. 196 (1): 7–18. doi:10.1083/jcb.201108111. ISSN 0021-9525. PMC 3255986. PMID 22232700. Retrieved 10 September 2016.
  8. ^ Micheo, William, ed. (2010). Musculoskeletal, Sports and Occupational Medicine. New York: Demos Medical Pub., LLC. p. 192. ISBN 9781617050077. Retrieved 10 September 2016.
  9. ^ "Tendon Transfers: History, Concepts, Timing of Tendon Transfer". 2017-05-02.
  10. ^ Wolfe, Scott W.; Pederson, William C.; Hotchkiss, Robert N.; Kozin, Scott H.; Cohen, Mark S. (2010-11-24). Green's Operative Hand Surgery: Expert Consult: Online and Print. Elsevier Health Sciences. p. 1078. ISBN 978-1455737413. Retrieved 10 September 2016.
  11. ^ Ebnezar, John (2010). Textbook of Orthopedics. JP Medical Ltd. p. 342. ISBN 978-81-8448-744-2.
  12. ^ Goodman, Catherine C.; Fuller, Kenda S. (2011-02-14). Pathology for the Physical Therapist Assistant. Elsevier Health Sciences. p. 890. ISBN 978-1437708936.
  13. ^ Spinner, Robert J.; Poliakoff, Michael B.; Tiel, Robert L. (2002). "The Origin of "Saturday Night Palsy"?" (PDF). Neurosurgery. 51 (3): 737–741. doi:10.1227/01.NEU.0000023989.72999.40. Retrieved October 26, 2023.
  14. ^ "Medscape /Axillary Nerve Injury Associated With Sports". www.medscape.com. Retrieved 10 September 2016.

Further reading

External links

This page was last edited on 23 February 2024, at 17:25
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