Cranial Nerve Assessment: IV. Trochlear |
Examination type |
Neurological |
Patient & Body Segment Positioning |
Patient needs to be in a comfortable position,
either
sitting or standing |
Examiner Position |
The examiner needs to be anterior to (in front
of) the patient |
Performing the Test |
Ask the patient to
lookstraight ahead and follow your finger with his eyes as you
move the finger in all planes of motion (lateral motions, up, down,
in, out, and diagonally). The patient should not
move his head. |
Tissues
Being Tested |
Cranial
nerve IV. Trochlear nerve; Dorsal midbrain; eye muscles |
Positive Test |
Inability to
follow finger with eyes without moving head |
Interpretation |
Intracranial involvement |
Common errors in
performing exam |
Not coming bringing finger forward toward the patient's nose;
allowing the patient to move his head |
Factors possibly
resulting in misinterpretation |
Make sure that the athlete understands what you
are doing when performing the test |
Related tests |
Cranial
nerve assessment |
References |
Booher M. James. Athletic Injury
Assessment. 4th edition. McGraw Higher
Education 2000 |
Links: |
http://www.meddean.luc.edu/lumen/MedEd/GrossAnatomy/h_n/cn/cn1/cn5.htm |
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