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A Novel Technique for Conduction Studies of the Infrapatellar Nerve
Author(s) -
Tsenter Jeanna,
Schwartz Isabella,
KatzLeurer Michal,
Meiner Zeev,
Goldin Diana,
Vatine JeanJacques
Publication year - 2012
Publication title -
pmandr
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.617
H-Index - 66
eISSN - 1934-1563
pISSN - 1934-1482
DOI - 10.1016/j.pmrj.2012.06.001
Subject(s) - medicine , nerve conduction , anatomy , surgery
Objective To introduce a noninvasive method for electrodiagnostic evaluation of the infrapatellar nerve (IPN). Design A prospective cohort study. Setting Electrodiagnostic laboratory, rehabilitation department, Hadassah University Hospital. Participants A total of 38 healthy adults; 57 asymptomatic limbs were studied. Methods Sensory nerve action potential of the IPN was recorded with surface electrodes placed 2.5 cm below the distal pole of the patella and 2 cm medially from the medial border of the patellar tendon. Transcutaneous antidromic electrical stimulation of IPN was applied above the medial femoral condyle and 8‐10 cm proximally from the active surface electrode. Results The sensory nerve action potential mean (n = 38) onset latency was 1.69 ± 0.32 ms. Peak latency was 2.36 ± 0.47 ms, and amplitude was 6.96 ± 3.68 μV. Conclusions This article describes a novel and simple technique for IPN conduction electrodiagnostic examination. The method used provides a new tool to evaluate IPN injury in reference to anterior or inferior knee pain with associated sensory deficit.