ulnar neuropathy

WordNet

1. the inner and longer of the two bones of the human forearm (同)elbow bone
2. relating to or near the ulna
3. any pathology of the peripheral nerves

PrepTutorEJDIC

1. (人の腕,動物の前肢の)尺骨

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/09/27 20:40:45」(JST)

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Ulnar neuropathy
Nerves of the left upper extremity. (Ulnar labeled at center)
Classification and external resources
Specialty	neurology
ICD-10	G56.2
ICD-9-CM	354.2
eMedicine	article/1141515

Ulnar neuropathy is a disorder involving the ulnar nerve. Ulnar neuropathy may be caused by entrapment of the ulnar nerve with resultant numbness and tingling. Motor function can be assessed by testing for a positive Froment's sign, or making an OK sign (which the individual will be unable to do), little finger abduction can be tested as well.

Signs and symptoms

In terms of the signs/symptoms of ulnar neuropathy trauma and pressure to the arm and wrist, especially the elbow, the medial side of the wrist, and other sites close to the course of the ulnar nerve are of interest in this condition..Many people complain of sensory changes in the fourth and fifth digits. Rarely, an individual actually notices that the unusual sensations are mainly in the medial side of the ring finger (fourth digit). Sometimes the third digit is also involved, especially on the ulnar (medial) side. The sensory changes can be a feeling of numbness or a tingling, pain rarely occurs in the hand. Complaints of pain tend to be more common in the arm, up to and including the elbow area, which is probably the most common site of pain in an ulnar neuropathy.

Causes

Among the causes of ulnar neuropathy are the following-

Olecranon

• Olecranon fractures
• Distal humerus fractures
• Medial epicondylar fractures
• Valgus stress
• Childhood supracondylar fracture
• Transient occlusion brachial artery (surgery)
• Subdermal contraceptive (implant)
• Hemophilia
• Tumor
• Blunt injuries

Pathophysiology

In regards to the pathophysiology of ulnar neuropathy:the axon, and myelin can be affected. Within the axon, fascicles to individual muscles could be involved, with subsequent motor unit loss and amplitude decrease. Conduction block means impaired transmission via a part of the nerve. Conduction block can mean myelin damage to the involved area, slowing of conduction or significant spreading out of the temporal profile of the response with axonal integrity is a hallmark of demyelination.

Diagnosis

Nerve conduction study (Calculation of NCV)

Among the diagnostic procedures done to determine if the individual has ulnar neuropathy are:

• Nerve conduction exam/study (Nerve Conduction Velocity is a measurements made in a nerve conduction exam)
• Physical exam
• Medical history
• X ray
• CBC
• Urinalysis
• MRI
• Ultrasound
• Histology study

Treatment

Treatment for ulnar neuropathy can entail: NSAID (non-steroidal anti-inflammatory) medicines. there is also the option of cortisone. Another possible option is splinting, to secure elbow, a conservative procedure endorsed by some. In cases where surgery is needed, cubital tunnel release, were the ligament of the cubital tunnel is cut, thereby alleviating pressure on nerve can be performed.

Prognosis

In terms of the prognosis of ulnar neuropathy early decompression of the nerve sees a return to normal ability (function). which should be immediate.Severe cubital tunnel syndrome tends to have a faster recovery process in individuals below the age of 70, as opposed to those above such an age. Finally, revisional surgery for cubital tunnel syndrome does not result well for those individuals over 50 years of age.

References

Further reading

• "NIOSHTIC-2 Publications Search - 20045060 - Do comorbid ulnar symptoms or ulnar neuropathy affect the prognosis of workers with carpal tunnel syndrome?". www.cdc.gov. Retrieved 2016-07-22. 
• Yoon, Joon Shik; Walker, Francis O.; Cartwright, Michael S. (1 February 2010). "Ulnar Neuropathy With Normal Electrodiagnosis and Abnormal Nerve Ultrasound". Archives of physical medicine and rehabilitation. 91 (2): 318–320. doi:10.1016/j.apmr.2009.10.010. ISSN 0003-9993. Retrieved 23 July 2016. 
• Warner, Mark A.; Warner, David O.; Matsumoto, Joseph Y.; Harper, Michel C.; Schroeder, Darrell R.; Maxson, Pamela M. (1 January 1999). "Ulnar Neuropathy in Surgical Patients". The Journal of the American Society of Anesthesiologists. 90 (1): 54–59. ISSN 0003-3022. Retrieved 23 July 2016. 

External links

• "DMOZ - Health: Conditions and Diseases: Neurological Disorders: Muscle Diseases: Reflex Sympathetic Dystrophy". www.dmoz.org. Retrieved 23 July 2016. 

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

• 1. 肘および手首の尺骨神経障害 ulnar neuropathy at the elbow and wrist
• 2. 上肢末梢神経症候群の概要 overview of upper extremity peripheral nerve syndromes
• 3. 亜急性または慢性の手首の疼痛を有する成人の評価 evaluation of the adult with subacute or chronic wrist pain
• 4. 手首の解剖学および基本的な生体力学 anatomy and basic biomechanics of the wrist
• 5. 若年アスリートにおける肘関節損傷 elbow injuries in the young athlete

English Journal

• Ultrasonography of ulnar neuropathy at the elbow: Axonal involvement leads to greater nerve swelling than demyelinating nerve lesion.

• Scheidl E, Böhm J, Farbaky Z, Simó M, Bereczki D, Arányi Z.SourceDepartment of Neurology, Semmelweis University, Budapest, Hungary.
• Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology.Clin Neurophysiol.2013 Mar;124(3):619-25. doi: 10.1016/j.clinph.2012.08.027. Epub 2012 Oct 12.
• OBJECTIVE: To evaluate nerve size parameters measured by ultrasound in patients with ulnar neuropathy at the elbow (UNE) and to correlate them with the type of nerve lesion.METHODS: The largest cross sectional area (CSA(max)) of the ulnar nerve around the elbow and the cubital-to-humeral nerve area
• PMID 23068559

• A rare case of elbow dislocation associated with unrecognized fracture of medial epicondyle and delayed ulnar neuropathy in pediatric age.

• Lima S, Correia JF, Ribeiro RP, Martins RM, Alegrete N, Coutinho J, Costa GM.SourceCentro Hospitalar Tâmega e Sousa, Penafiel, Portugal. Electronic address: saralimaraujo@gmail.com.
• Journal of shoulder and elbow surgery / American Shoulder and Elbow Surgeons ... [et al.].J Shoulder Elbow Surg.2013 Mar;22(3):e9-e11. doi: 10.1016/j.jse.2012.11.009.
• PMID 23439311

Japanese Journal

• 最新原著レビュー 肘部管症候群患者における肘屈曲テストと肘部管内圧の関連

• 越智 健介,堀内 行雄
• 整形外科 63(7), 687-690, 2012-07
• NAID 40019361268

• 手掌部尺骨神経障害

• 向原 茂雄,橘 滋國,工藤 洋平,坂本 真幸,西島 洋司
• 脊髄外科 : 日本脊髄外科研究会機関誌 = Spinal surgery : official journal of the Japanese Society of Spinal Surgery 26(1), 68-73, 2012-04-25
• NAID 10030126158

Related Links

• Ulnar Neuropathy - Diseases & Conditions - Medscape Reference

Ulnar Neuropathy. The ulnar nerve is an extension of the medial cord of the brachial plexus. ... Upon entering the cubital tunnel, the ulnar nerve gives off an articular branch to the elbow. It then passes between the ...

• Ulnar Neuropathy

Upon entering the cubital tunnel, the ulnar nerve gives off an articular branch to the elbow. It then passes between the humeral and ulnar heads of the flexor carpi ulnaris and descends into the forearm between the flexor carpi ulnaris ...

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★リンクテーブル★

リンク元	「尺骨神経障害」「ulnar nerve palsy」「ulnar neuritis」
関連記事	「ulnar」「neuropathy」

「尺骨神経障害」

　　[★]

英

ulnar neuropathy

関

尺骨神経麻痺、尺骨神経炎

「ulnar nerve palsy」

　　[★]

尺骨神経麻痺

関

ulnar neuritis、ulnar neuropathy

「ulnar neuritis」

　　[★]

尺骨神経炎

関

ulnar nerve palsy、ulnar neuropathy

「ulnar」

　　[★]

• adj.

(前腕の小指側を指して):*尺側の、尺骨の

関

basilic、ulna

　

「neuropathy」

　　[★] ニューロパチー

同

NARP