Abstract
The presence and disposition of supernumerary tendons in the fourth extensor compartment of the wrist have been described by several authors. The aim of this communication was to describe a finding in a study of an anatomical dissection of an adult cadaver that presents a rare disposition of extensor tendons in the fourth extensor compartment of both wrists. In the right wrist, we found an extensor pollicis et indicis communis with three slips: two toward the index finger and one toward the thumb. We found no similar reports in a review of the literature. Additionally, we found an extensor indicis radialis in the left wrist. In both hands, the course of accessory slips was modified by fiber derived from intertendinous fascia. Although this represents a small percentage of the distribution of tendons of the dorsal hand, knowledge of these anatomical variations and their relationships to intertendinous fascia is critical for clinical decisions because this area is used frequently in treatments related to tendon graft, transfer, and transplantation.
References
Abu-Hijleh MF (1993) Extensor pollicis tertius: an additional extensor muscle to the thumb. Plast Reconstr Surg 92:340–343
Baker J, Gonzalez MH (2008) Snapping wrist due to an anomalous extensor indicis proprius: a case report. Hand NY 3:363–365
Bluth BE, Wu B, Elena Stark M, Wisco JJ (2010) Variant of the extensor pollicis tertius: a case report on a unique extensor muscle to the thumb. Anat Sci Int 86:160–163
Casanova Martínez D, Valdivia Gandur I, Golanó P (2013) Extensor pollicis et indicis communis or extensor indicis radialis muscle. Anat Sci Int 88:153–155
Cauldwell EW, Anson BJ, Wright RR (1943) The extensor indicis proprius muscle: a study of 263 consecutive specimens. Q Bull Northwest Univ Med School 17:267–269
Celik S, Bilge O, Pinar Y, Govsa F (2008) The anatomical variations of the extensor tendons to the dorsum of the hand. Clin Anat 21:652–659
Chiu DT (1981) Supernumerary extensor tendon to the thumb: a report on a rare anatomic variation. Plast Reconstr Surg 68:937–939
Culver JE Jr (1980) Extensor pollicis and indicis communis tendon: a rare anatomic variation revisited. J Hand Surg Am 5:548–549
Cusenz BJ, Hallock GG (1986) Multiple anomalous tendons of the fourth dorsal compartment. J Hand Surg Am 11:263–264
De Vilhena H (1933) Le muscle surnuméraire extenseur commun du pouce et de l’index. C R Assoc Anatom 28:685–702
Gaulke R (2001) The extensor pollicis et indicis: an accessory or rudimentary deep extensor tendon to the thumb? Variants–frequency–clinical relevance. Handchir Mikrochir Plast Chir 33:310–320
Godwin Y, Ellis H (1992) Distribution of the extensor tendons on the dorsum of the hand. Clin Anat 5:394–403
Kaplan EB, Nathan P (1969) Accessory extensor pollicis longus. Bull Hosp Joint Dis Orthop Inst 30:202–207
Komiyama M, Nwe TM, Toyota N, Shimada Y (1999) Variations of the extensor indicis muscle and tendon. J Hand Surg 24:575–578
Nayak SR, Hussein M, Krishnamurthy A, Mansur DI, Prabhu LV, D’Souza P, Potu BK, Chettiar GK (2009) Variation and clinical significance of extensor pollicis brevis: a study in South Indian cadavers. Chang Gung Med J 32:600–604
Patel MR, Moradia VJ, Bassini L, Lei B (1996) Extensor indicis proprius syndrome: a case report. J Hand Surg Am 21:914–915
Ritter MA, Inglis AE (1969) The extensor indicis proprius syndrome. J Bone Joint Surg 51:1645–1648
Steichen JB, Petersen DP (1984) Junctura tendinum between extensor digitorum communis and extensor pollicis longus. J Hand Surg Am 9:674–676
Von Schroeder HP, Botte MJ (1995) Anatomy of the extensor tendons of the fingers: variations and multiplicity. J Hand Surg Am 20:27–34
Wood J (1869) On some variations in human myology. Proc R Soc Lond 15:518–546
Yoshida Y (1990) Anatomical study on the extensor digitorum profundus muscle in the Japanese. Okajimas Folia Anat Jpn 66:339–353
Yoshida Y (1995) Anatomical studies on the extensor pollicis et indicis accessorius muscle and the extensor indicis radialis muscle in Japanese. Okajimas Folia Anat Jpn 71:355–363
Acknowledgments
The authors would like to thank the personnel of the Anatomy Unit, University of Barcelona, and are grateful for support from the ANT1298 project of MECE higher education program of the Chilean Ministry of Education.
Conflict of interest
All authors declare that they have no conflicts of interest or financial ties to disclose.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Casanova-Martínez, D., Valdivia-Gandur, I. & Golanó, P. Extensor pollicis et indicis communis with triple slips in a bilateral case of accessory muscles of the hand. Anat Sci Int 89, 250–254 (2014). https://doi.org/10.1007/s12565-013-0223-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12565-013-0223-9