CC BY-NC-ND 4.0 · Indian J Plast Surg 2010; 43(01): 106-107
DOI: 10.1055/s-0039-1699416
Case Report
Association of Plastic Surgeons of India

A foregoing thenar muscular branch of the median nerve

Samet Vasfi Kuvat
Department of Plastic and Reconstructive Surgery, Diyarbakır and Istanbul, Ankara, Turkey.
,
Levent Özçakar
Department of Plastic and Reconstructive Surgery, Diyarbakır and Istanbul, Ankara, Turkey.
,
Memet Yazar
Department of Plastic and Reconstructive Surgery, Diyarbakır and Istanbul, Ankara, Turkey.
› Author Affiliations
Further Information

Publication History

Publication Date:
08 January 2020 (online)

ABSTRACT

We present a 62-year-old female patient who had an anatomic variation in the median nerve of the left hand. During surgery for releasing the left carpal tunnel, an abnormally high level of origin of the thenar muscular branch of the median nerve was detected, at 2.5 cm above the proximal border of transverse carpal ligament. It traveled between the medial side of the flexor carpi radialis tendon and median nerve and entered the carpal tunnel. After exiting the carpal tunnel distally, the nerve, was noted to course towards the thenar area. Such variations in the median nerve should be kept in mind while performing carpal tunnel release.

 
  • REFERENCES

  • 1 Olave E, Prates JC, Del Sol M, Sarmento A, Gabrielli C. Distribution patterns of the muscular branch of the median nerve in the thenar region. J Anat 1995;186:441-6.
  • 2 Chung KC, Walters MR, Greenfield ML, Chernew ME. Endoscopic versus open carpal tunnel release: A cost-effectiveness analysis. Plast Reconstr Surg 1998;102:1089-99.
  • 3 Lanz U. Anatomical variations of the median nerve in the carpal tunnel. J Hand Surg Am 1977;2:44-53.
  • 4 Siverhus SW, Kremchek TE, Smith WR, Basch TM, Drake RL. A cadaveric study of the anatomic variations of the recurrent motor branch of the median nerve. Orthop Rev 1989;18:315-20.
  • 5 Linburg RM, Albright JA. An anomalous branch of the median nerve: A case report. J Bone Joint Surg Am 1970;52:182-3.
  • 6 Rockwell WB, Stone B, Zakhireh M. Three thenar motor branches of the median nerve. Ann Plast Surg 2001;46:661-2.
  • 7 Graham WP 3rd. Variations of the motor branch of the median nerve at the wrist: Case report. Plast Reconstr Surg 1973;51:90-2.
  • 8 Gruber W. Queen's Elements of Anatomy. Longman's, London: Green and Co; 1987. p. 303.
  • 9 Eiken O, Carstam N, Eddeland A. Anomalous distal branching of the median nerve: Case reports. Scand J Plast Reconstr Surg 1971;5:149-52.
  • 10 Kessler I. Unusual distribution of the median nerve at the wrist: A case report. Clin Orthop Relat Res 1969;67:124-6.