title: A novel technique for conduction studies of the infrapatellar nerve.
abstract: OBJECTIVE
  To introduce a noninvasive method for electrodiagnostic evaluation of the infrapatellar nerve (IPN).
  
  
  METHODS
  A prospective cohort study.
  
  
  METHODS
  Electrodiagnostic laboratory, rehabilitation department, Hadassah University Hospital.
  
  
  METHODS
  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.
authors: Department of Physical Medicine and Rehabilitation, Hadassah Medical Center-Hadassah University Hospital, Jerusalem, Israel.
authors: Jeanna
authors: J
authors: Tsenter
authors: Isabella
authors: I
authors: Schwartz
authors: Michal
authors: M
authors: Katz-Leurer
authors: Zeev
authors: Z
authors: Meiner
authors: Diana
authors: D
authors: Goldin
authors: Jean-Jacques
authors: JJ
authors: Vatine
mesh_terms: D000200:Action Potentials; D000293:Adolescent; D000328:Adult; D000368:Aged; D004558:Electric Stimulation / Q000379:methods*; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000294:innervation*; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction; D059348:Peripheral Nerve Injuries / Q000175:diagnosis*; D011446:Prospective Studies; D055815:Young Adult