Extensor indicis proprius tendon: Case report of a rare anatomic variation

Yamaguchi, Satoshi; Viegas, Steven F.

doi:10.1002/(sici)1098-2353(2000)13:1<63::aid-ca7>3.0.co;2-s

Cited by 6 publications

(1 citation statement)

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“…22 There is also an 0.5% possibility that EIP may be absent, which would make its use impossible. 17 Also, rare variations of the EIP anatomy, such as radial insertion of the EIP, 23 supernumerary muscles or tendons, and intertendinous connections, 24 would require careful dissection of the tendon.…”

Section: Figurementioning

confidence: 99%

Extensor Indicis Proprius Transfer for the Abducted Small Finger

Chung

Baek

et al. 2008

The Journal of Hand Surgery

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Section: Figurementioning

confidence: 99%

Extensor Indicis Proprius Transfer for the Abducted Small Finger

Chung

Baek

et al. 2008

The Journal of Hand Surgery

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The anatomical variations of the extensor tendons to the dorsum of the hand

et al. 2008

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To lead a quality life, tendon repair must be performed in a trauma causing damage to the extensor tendon of the hand. The aim of this study is to study the structures that can be used as donor tendons. Fifty-four dissected adult hands were examined to study the pattern of the extensor tendons on the dorsum of the hand. The most common distribution patterns of the extensor tendons of the fingers were as follows: a single extensor indicis proprius (EIP) tendon which inserted ulnar to the extensor digitorum (ED)-index; a single ED-index; a single ED-middle; a single ED-ring; an absent ED-little; a double extensor digiti minimi (EDM), and a single ED-ring to the little finger. The frequency of the number of tendons is as follows: a single (87.03%) EIP, a single ED-index (100%), a single (92.6%) ED-middle, a single (75.9%) ED-ring, and an absent (68.5%) or a single (24.1%) ED-little. A double (88.9%) EDM tendons were seen. The thickest type of juncturae tendinum (JT) is found primarily between the ring and little fingers (90%). Suitable excessive tendon and the thickest JT as donor tendon were found in the fourth intermetacarpal space. The present findings, especially the fourth intermetacarpal space, may explain why incisions on the dorsum of the hand should be large and performed with particular care. It is necessary to have a thorough understanding of the arrangements of the multiple extensor muscles and their junctural connections of the hand when tenoplasty or tendon transfer is required.

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