Neuralgic Amyotrophy Manifesting as Mimicking Posterior Interosseous Nerve Palsy

Yang, Jin Seo; Cho, Yong Jun; Kang, Suk Hyung; Choi, Eun Hi

doi:10.3340/jkns.2015.58.5.491

Cited by 10 publications

(4 citation statements)

References 11 publications

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“…18–21 A single case report with confirmation by MRN findings was recently added to these few individual descriptions. 22 Our study is the first to systematically investigate this observation in a larger group of patients with PINS.…”

Section: Discussionmentioning

confidence: 83%

Posterior interosseous neuropathy

Bäumer

Kele

Xia³

et al. 2016

Neurology

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Objective:To investigate the spatial pattern of lesion dispersion in posterior interosseous neuropathy syndrome (PINS) by high-resolution magnetic resonance neurography.Methods:This prospective study was approved by the local ethics committee and written informed consent was obtained from all patients. In 19 patients with PINS and 20 healthy controls, a standardized magnetic resonance neurography protocol at 3-tesla was performed with coverage of the upper arm and elbow (T2-weighted fat-saturated: echo time/repetition time 52/7,020 milliseconds, in-plane resolution 0.27 × 0.27 mm2). Lesion classification of the radial nerve trunk and its deep branch (which becomes the posterior interosseous nerve) was performed by visual rating and additional quantitative analysis of normalized T2 signal of radial nerve voxels.Results:Of 19 patients with PINS, only 3 (16%) had a focal neuropathy at the entry of the radial nerve deep branch into the supinator muscle at elbow/forearm level. The other 16 (84%) had proximal radial nerve lesions at the upper arm level with a predominant lesion focus 8.3 ± 4.6 cm proximal to the humeroradial joint. Most of these lesions (75%) followed a specific somatotopic pattern, involving only those fascicles that would form the posterior interosseous nerve more distally.Conclusions:PINS is not necessarily caused by focal compression at the supinator muscle but is instead frequently a consequence of partial fascicular lesions of the radial nerve trunk at the upper arm level. Neuroimaging should be considered as a complementary diagnostic method in PINS.

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Section: Discussionmentioning

confidence: 83%

Posterior interosseous neuropathy

Bäumer

Kele

Xia³

et al. 2016

Neurology

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“…There are several case reports of proximal radio-ulnar ganglion lesions involving the PIN with excellent recovery following excision [9], of intraneural PIN lipomas [10], isolated case reports of PIN schwannomas [11], neuralgic amyotrophy presenting as an isolated PIN palsy [12], and rheumatoid arthritis with synovial invasion [13].…”

Section: Discussionmentioning

confidence: 99%

The “Texas Longhorn” Syndrome: A Case of Posterior Interosseous Nerve Palsy With Noteworthy Observations

Kesserwani¹

2021

Cureus

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The posterior interosseous nerve (PIN) is quite a fascinating nerve. It wraps around the radial neck akin to the fibular nerve wrapping around the fibular neck. It can be compressed by the arcade of Frohse in a fashion similar to median nerve entrapment by the carpal tunnel. Furthermore, it divides into a number of branches, a simulacrum of the cauda equina, as it emerges from the supinator muscle. It is also associated with spaceoccupying pathologies; lipomas, and ganglion cysts being among the most common. It also has other interesting anatomical properties, such as fascicular compartmentalization, explaining PIN paralysis with radial nerve injuries. Finally, PIN lesions can lead to partial paralysis of finger extensors leading to the "Texas longhorn" hand gesture. We seize upon a case of PIN entrapment by fibrous adhesions and the arcade of Frohse, and explore the functional anatomy of the PIN.

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“…When considering the differential diagnosis, musculoskeletal disorders of shoulder, CR, poliomyelitis, amyotrophic lateral sclerosis, herpes zoster, tumors of spinal cord or brachial plexus, posterior interosseous nerve palsy, traumatic or compressive nerve injuries should be considered (12,13).…”

Section: Discussionmentioning

confidence: 99%

Idiopathic Brachial Neuritis Mimics Cervical Radiculopathy: A Case Report

Saygı¹,

Toprak²,

Cubukcu³

et al. 2018

meandros

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Özİdiyopatik brakial nörit (İBN) akut başlangıçlı omuz ağrısını, omuz kuşağı ve üst ekstremitede gelişen progresif kas güçsüzlüğü ve atrofinin takip ettiği nadir görülen bir hastalıktır. Olgu sunumu: 47 yaşında erkek hasta sol kol ve omuzda ani başlayan ve 2 aydır devam eden şiddetli ağrı şikayeti ile başvurdu. Ayrıca üst ekstremitede fizik muayene ile gösterilebilen ciddi kas güçsüzlüğü vardı. Manyetik rezonans görüntülemede (MRG) C6 seviyesinde foraminal kanalda basısı mevcuttu. Bu bulgulara göre ön tanı cerrahi girişim gerektirebilecek servikal radikülopati (SR) idi. Ancak detaylı anamnez, fizik muayene bulguları ve elektronöromiyografi (ENMG) sonuçları konservatif tedavi ile yavaş ancak progresif iyileşme gösteren İBN ile uyumlu idi. İBN tanısında kilit noktalar detaylı anamnez ve fizik muayane olsa da gereksiz girişimleri engellemek amacıyla erken ve doğru tanı için ENMG en faydalı testtir. IntroductionIdiopathic brachial neuritis (IBN) is a peripheral neuropathy, with an unknown etiology, which mostly affects the upper trunk of brachial plexus, although focal involvement of individual nerves is also seen. Although there is no consensus about the most frequently affected Idiopathic brachial neuritis (IBN) is an uncommon clinical disorder with onset of acute, aching shoulder pain, followed by progressive muscle weakness and atrophy of shoulder girdle and upper extremity. Case report: A 47 year old male patient presented with an acute onset left shoulder pain which has been lasting for two months. He had also severe upper extremity weakness demonstrated on physical examination and compression in C6 level on the left foraminal canal in imaging. According to these findings, primary diagnosis was cervical radiculopathy (CR) which may have required surgical intervention. However, detailed history of pain, physical examination findings and electroneuromyography (ENMG) results were consistent with IBN that had a slow but progressive recovery with conservative treatment. Although detailed history and physical examination are key points in the diagnosis of IBN, ENMG is the most helpful study for early and correct diagnosis which helps in avoiding unnecessary interventions. Ad

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Neuralgic Amyotrophy Manifesting as Mimicking Posterior Interosseous Nerve Palsy

Cited by 10 publications

References 11 publications

Posterior interosseous neuropathy

Posterior interosseous neuropathy

The “Texas Longhorn” Syndrome: A Case of Posterior Interosseous Nerve Palsy With Noteworthy Observations

Idiopathic Brachial Neuritis Mimics Cervical Radiculopathy: A Case Report

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