Anatomical variation of radial wrist extensor muscles

A study in cadavers

Soubhagya Ranjan Nayak, Ashwin Krishnamurthy, Latha Venkatraya Prabhu, Rajalakshmi Rai, Anu Vinod Ranade, Sampath Madhyastha

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

OBJECTIVE: The tendons of the extensor carpi radialis longus and brevis muscles are quite useful in tendon transfer, such as in correction of finger clawing and restoration of thumb opposition. Knowledge of additional radial wrist extensor muscle bellies with independent tendons is useful in the above-mentioned surgical procedures. METHODS: The skin, subcutaneous tissue, and antebrachial fascia of 48 (24 on the right side and 24 on left side) male upper limb forearms were dissected. The following aspects were then analyzed: (a) the presence of additional muscle bellies of radial wrist extensors, (b) the origin and insertion of the additional muscle, and (c) measurements of the muscle bellies and their tendons. RESULTS: Five out of 48 upper limbs (10.4.1%) had additional radial wrist extensors; this occurred in 3 out of 24 left upper limbs (12.5%) and 2 out of 24 right upper limbs (8.3%). In one of the right upper limbs, two additional muscles were found. The length and width of each additional muscle belly and its tendon ranged between 2 - 15cm by 0.35 - 6.4cm and 2.8 - 20.8cm by 0.2 -0.5cm, respectively. The additional radial wrist extensor tendons in our study basically originated either from the extensor carpi radialis longus or brevis muscles and were inserted at the base of the 2nd or 3rd metacarpal bone. CONCLUSION: The present study will inform surgeons about the different varieties of additional radial wrist extensors and the frequency of their occurrence.

Original languageEnglish
Pages (from-to)85-90
Number of pages6
JournalClinics
Volume63
Issue number1
Publication statusPublished - 2008

Fingerprint

Wrist
Cadaver
Muscles
Upper Extremity
Tendons
Tendon Transfer
Metacarpal Bones
Fascia
Thumb
Subcutaneous Tissue
Forearm
Fingers
Skin

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

Nayak, S. R., Krishnamurthy, A., Prabhu, L. V., Rai, R., Ranade, A. V., & Madhyastha, S. (2008). Anatomical variation of radial wrist extensor muscles: A study in cadavers. Clinics, 63(1), 85-90.
Nayak, Soubhagya Ranjan ; Krishnamurthy, Ashwin ; Prabhu, Latha Venkatraya ; Rai, Rajalakshmi ; Ranade, Anu Vinod ; Madhyastha, Sampath. / Anatomical variation of radial wrist extensor muscles : A study in cadavers. In: Clinics. 2008 ; Vol. 63, No. 1. pp. 85-90.
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abstract = "OBJECTIVE: The tendons of the extensor carpi radialis longus and brevis muscles are quite useful in tendon transfer, such as in correction of finger clawing and restoration of thumb opposition. Knowledge of additional radial wrist extensor muscle bellies with independent tendons is useful in the above-mentioned surgical procedures. METHODS: The skin, subcutaneous tissue, and antebrachial fascia of 48 (24 on the right side and 24 on left side) male upper limb forearms were dissected. The following aspects were then analyzed: (a) the presence of additional muscle bellies of radial wrist extensors, (b) the origin and insertion of the additional muscle, and (c) measurements of the muscle bellies and their tendons. RESULTS: Five out of 48 upper limbs (10.4.1{\%}) had additional radial wrist extensors; this occurred in 3 out of 24 left upper limbs (12.5{\%}) and 2 out of 24 right upper limbs (8.3{\%}). In one of the right upper limbs, two additional muscles were found. The length and width of each additional muscle belly and its tendon ranged between 2 - 15cm by 0.35 - 6.4cm and 2.8 - 20.8cm by 0.2 -0.5cm, respectively. The additional radial wrist extensor tendons in our study basically originated either from the extensor carpi radialis longus or brevis muscles and were inserted at the base of the 2nd or 3rd metacarpal bone. CONCLUSION: The present study will inform surgeons about the different varieties of additional radial wrist extensors and the frequency of their occurrence.",
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Nayak, SR, Krishnamurthy, A, Prabhu, LV, Rai, R, Ranade, AV & Madhyastha, S 2008, 'Anatomical variation of radial wrist extensor muscles: A study in cadavers', Clinics, vol. 63, no. 1, pp. 85-90.

Anatomical variation of radial wrist extensor muscles : A study in cadavers. / Nayak, Soubhagya Ranjan; Krishnamurthy, Ashwin; Prabhu, Latha Venkatraya; Rai, Rajalakshmi; Ranade, Anu Vinod; Madhyastha, Sampath.

In: Clinics, Vol. 63, No. 1, 2008, p. 85-90.

Research output: Contribution to journalArticle

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T1 - Anatomical variation of radial wrist extensor muscles

T2 - A study in cadavers

AU - Nayak, Soubhagya Ranjan

AU - Krishnamurthy, Ashwin

AU - Prabhu, Latha Venkatraya

AU - Rai, Rajalakshmi

AU - Ranade, Anu Vinod

AU - Madhyastha, Sampath

PY - 2008

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N2 - OBJECTIVE: The tendons of the extensor carpi radialis longus and brevis muscles are quite useful in tendon transfer, such as in correction of finger clawing and restoration of thumb opposition. Knowledge of additional radial wrist extensor muscle bellies with independent tendons is useful in the above-mentioned surgical procedures. METHODS: The skin, subcutaneous tissue, and antebrachial fascia of 48 (24 on the right side and 24 on left side) male upper limb forearms were dissected. The following aspects were then analyzed: (a) the presence of additional muscle bellies of radial wrist extensors, (b) the origin and insertion of the additional muscle, and (c) measurements of the muscle bellies and their tendons. RESULTS: Five out of 48 upper limbs (10.4.1%) had additional radial wrist extensors; this occurred in 3 out of 24 left upper limbs (12.5%) and 2 out of 24 right upper limbs (8.3%). In one of the right upper limbs, two additional muscles were found. The length and width of each additional muscle belly and its tendon ranged between 2 - 15cm by 0.35 - 6.4cm and 2.8 - 20.8cm by 0.2 -0.5cm, respectively. The additional radial wrist extensor tendons in our study basically originated either from the extensor carpi radialis longus or brevis muscles and were inserted at the base of the 2nd or 3rd metacarpal bone. CONCLUSION: The present study will inform surgeons about the different varieties of additional radial wrist extensors and the frequency of their occurrence.

AB - OBJECTIVE: The tendons of the extensor carpi radialis longus and brevis muscles are quite useful in tendon transfer, such as in correction of finger clawing and restoration of thumb opposition. Knowledge of additional radial wrist extensor muscle bellies with independent tendons is useful in the above-mentioned surgical procedures. METHODS: The skin, subcutaneous tissue, and antebrachial fascia of 48 (24 on the right side and 24 on left side) male upper limb forearms were dissected. The following aspects were then analyzed: (a) the presence of additional muscle bellies of radial wrist extensors, (b) the origin and insertion of the additional muscle, and (c) measurements of the muscle bellies and their tendons. RESULTS: Five out of 48 upper limbs (10.4.1%) had additional radial wrist extensors; this occurred in 3 out of 24 left upper limbs (12.5%) and 2 out of 24 right upper limbs (8.3%). In one of the right upper limbs, two additional muscles were found. The length and width of each additional muscle belly and its tendon ranged between 2 - 15cm by 0.35 - 6.4cm and 2.8 - 20.8cm by 0.2 -0.5cm, respectively. The additional radial wrist extensor tendons in our study basically originated either from the extensor carpi radialis longus or brevis muscles and were inserted at the base of the 2nd or 3rd metacarpal bone. CONCLUSION: The present study will inform surgeons about the different varieties of additional radial wrist extensors and the frequency of their occurrence.

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Nayak SR, Krishnamurthy A, Prabhu LV, Rai R, Ranade AV, Madhyastha S. Anatomical variation of radial wrist extensor muscles: A study in cadavers. Clinics. 2008;63(1):85-90.