Conexiones entre los nervios mediano-cubital por electromiografía en Lima (Perú), 2016

Frequency of Type-1 Berrettini's Connection in a Neurophysiology Laboratory

“…However, the frequency of Berrettini's anastomosis encountered in the present study is slightly higher than the one reported in a study performed in Lima, Perú, which was 9.4% of the cases. 1 …”

“…It is essential to take this anatomical variant into account, since should it be injured iatrogenically during surgery for carpal tunnel syndrome or Dupuytren's contracture, the sequel may be an unpleasant tingling sensation in the radial half of the fourth finger and the ulnar half of the third finger. 19 In addition to the electrophysiological evidence of Berrettini's anastomotic communication to the middle finger, 1 7 8 a recent study has reported about Berrettini's anastomotic communication providing sensory supply to index finger too. 20 Therefore, its routine electrophysiological search is recommended before surgery.…”

“…The importance of its recognition is the potential intrasurgical injury. 1 Also, 16% of iatrogenic injury cases occur due to the superposition of the sensory innervation with that of the ulnar nerve or by a motor branch to the thumb's abductor brevis muscle, originating from the deep distal branch of the ulnar nerve. 2 The Berrettini connection can be injured during endoscopic surgery for carpal tunnel syndrome, or secondary to the surgical release of Dupuytren's contracture.…”

“…Anatomical studies consider it to be a standard anatomical variant, due to its high frequency. 1 However, it is not frequently investigated in electrophysiological studies on a routine basis. Therefore, this work aims to determine the frequency of this communicating branch's presence through sensory conduction studies.…”