{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T16:59:22Z","timestamp":1788454762137,"version":"build-2803163510"},"reference-count":12,"publisher":"Pensoft Publishers","issue":"3","license":[{"start":{"date-parts":[[2022,6,30]],"date-time":"2022-06-30T00:00:00Z","timestamp":1656547200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["FM"],"abstract":"<jats:p>\n            <jats:bold>Abstract<\/jats:bold>\n          <\/jats:p>\n          <jats:p>The Riche-Cannieu anastomosis is a neural connection between the deep branch of the ulnar nerve and the recurrent motor branch of the median nerve to the thenar. Rarely, it provides complete or nearly complete ulnar innervation of the thenar muscles (all-ulnar hand). This may lead to confusing clinical and electrodiagnostic findings in patients with median or ulnar nerve pathology, or during workup for suspected nerve lesions.<\/jats:p>\n          <jats:p>Two patients referred for electrodiagnostic assessment of carpal tunnel syndrome and one patient with suspected peripheral neuropathy presented with absent or very low compound motor action potential from the thenar after median nerve stimulation. This occurred in spite of normal thenar muscles\u2019 bulk and function, in one hand (one subject) or both hands (two subjects). Ulnar nerve stimulation at wrist and elbow while recording over abductor pollicis brevis, first and second lumbrical muscles and needle electromyography allowed us to recognize Riche-Cannieu anastomosis and avoid diagnostic errors.<\/jats:p>\n          <jats:p>The rare innervation variant of all-ulnar hand should be considered in less typical presentations of hand disorders, especially when there is a discrepancy between the clinical findings and the expected electrodiagnostic changes.<\/jats:p>","DOI":"10.3897\/folmed.64.e62461","type":"journal-article","created":{"date-parts":[[2022,6,30]],"date-time":"2022-06-30T14:53:20Z","timestamp":1656600800000},"page":"532-536","source":"Crossref","is-referenced-by-count":2,"title":["Clinical-electrodiagnostic correlates in three cases of Riche-Cannieu anomaly (all-ulnar hand)"],"prefix":"10.3897","volume":"64","author":[{"given":"Abdullah","family":"Alajmi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adnan","family":"Khuraibet","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1257-6758","authenticated-orcid":true,"given":"Todor","family":"Shamov","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2076-5356","authenticated-orcid":true,"given":"Rossen","family":"Rousseff","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2258","published-online":{"date-parts":[[2022,6,30]]},"reference":[{"key":"62461_B1","unstructured":"1. Ross AC. Wrist and hand. In: Standring S, ed. Gray\u2019s Anatomy, 41st ed. New York: Elsevier Limited; 2016: 886\u20137, 891\u20133."},{"key":"62461_B2","doi-asserted-by":"crossref","unstructured":"2. Yang H, Gil Y, Kim S, et al. From the brachial plexus to the hand, multiple connections between the median and ulnar nerves may serve as bypass routes for nerve fibres. J Hand Surg Eur Vol 2016; 41:648\u201356.","DOI":"10.1177\/1753193415622760"},{"key":"62461_B3","doi-asserted-by":"crossref","unstructured":"3. Caetano E, Vieira L, Sabongi Neto J, et al. Rich\u00e9-Cannieu anastomosis: structure, function, and clinical significance. Rev Bras Ortop (Sao Paulo) 2019: 54:564\u201371.","DOI":"10.1016\/j.rbo.2017.12.019"},{"key":"62461_B4","doi-asserted-by":"crossref","unstructured":"4. Oh S. Clinical electromyography: nerve conduction studies. 3rd ed.; Philadelphia PA, USA: Lippinkot Williams & Wilkins; 2003; 356\u20138.","DOI":"10.1046\/j.1468-1331.2003.00654.x"},{"key":"62461_B5","doi-asserted-by":"crossref","unstructured":"5. Van Dijk JG. Anomalies of innervation. In: Kimura J, Daube JR, Maugui\u00e8re F, editors. Handbook of clinical neurophysiology. Amsterdam: Elsevier; 2006; Vol. 7:311\u201333.","DOI":"10.1016\/S1567-4231(09)70075-9"},{"key":"62461_B6","doi-asserted-by":"crossref","unstructured":"6. Boland R, Krishnan A, Kiernan M. Riche-Cannieu anastomosis as an inherited trait. Clin Neurophysiol 2007; 118:770\u20135.","DOI":"10.1016\/j.clinph.2006.12.009"},{"key":"62461_B7","doi-asserted-by":"crossref","unstructured":"7. Ebata T, Imai K, Tokunaga S, et al. Thumb opposition in severe carpal tunnel syndrome with undetectable APB-CMAP. Hand Surg 2014; 19:199\u2013204.","DOI":"10.1142\/S0218810414500208"},{"key":"62461_B8","doi-asserted-by":"crossref","unstructured":"8. Fowler J. Nerve conduction studies for carpal tunnel syndrome: gold standard or unnecessary evil? Orthopedics 2017; 40:141\u20132.","DOI":"10.3928\/01477447-20170419-01"},{"key":"62461_B9","doi-asserted-by":"crossref","unstructured":"9. Hess C, Jenkins J. Riche-Cannieu anastomosis masquerading as severe median neuropathy: a case report. PM&R 2012; 10:S229\u201330.","DOI":"10.1016\/j.pmrj.2012.09.741"},{"key":"62461_B10","unstructured":"10. Saperstein D, King R. Motor neuron presentation of an ulnar neuropathy and Riche-Cannieu anastomosis. Electromyogr Clin Neurophysiol 2000; 40:119\u201322."},{"key":"62461_B11","doi-asserted-by":"crossref","unstructured":"11. Rovers J, Brekelmans G, Visser L. Piso-hamate hiatus syndrome in a patient with Riche-Cannieu anastomosis. BMJ Case Rep 2013; 2013:bcr2013008601.","DOI":"10.1136\/bcr-2013-008601"},{"key":"62461_B12","unstructured":"12. Dumitru D, Walsh NE, Weber CF. Electrophysiologic study of the Riche-Cannieu anomaly. Electromyogr Clin Neurophysiol 1988; 28:27\u201331."}],"container-title":["Folia Medica"],"original-title":[],"link":[{"URL":"https:\/\/foliamedica.bg\/article\/62461\/download\/pdf\/","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/foliamedica.bg\/article\/62461\/download\/xml\/","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/foliamedica.bg\/article_preview.php?id=62461&skip_redirect=1","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,6,30]],"date-time":"2022-06-30T14:53:34Z","timestamp":1656600814000},"score":1,"resource":{"primary":{"URL":"https:\/\/foliamedica.bg\/article\/62461\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,6,30]]},"references-count":12,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2022,6,30]]}},"URL":"https:\/\/doi.org\/10.3897\/folmed.64.e62461","relation":{},"ISSN":["1314-2143","0204-8043"],"issn-type":[{"value":"1314-2143","type":"electronic"},{"value":"0204-8043","type":"print"}],"subject":[],"published":{"date-parts":[[2022,6,30]]}}}