1 These approaches compare proximal sensation to distal, which would overestimate abnormal values. Some have suggested placing the examiner’s finger on the opposite surface of the joint being tested from the tuning fork and noting if the vibration persists after the patient no longer senses it, 2 or assessing the patient’s threshold against the examiner’s, by applying the tuning fork to their finger. 3 For the qualitative 128 Hz tuning fork, absent sensation was categorized as abnormal, however, no uniform criteria has been described for decreased vibratory sensation. For the Rydel-Seiffer tuning fork, values ≤ 5 was categorized as abnormal at the distal interphalangeal joint on the second digit 7 values ≤ 4 was categorized as abnormal at the first metatarsal joint. The tuning forks were struck maximally and applied perpendicularly to the (a) dorsal head of the first metatarsal joint, and (b) distal inter-phalangeal joint on the second digit (index finger). Following training under board-certified neuromuscular physicians, the qualitative and quantitative tuning forks were tested in a consecutive fashion by neuromuscular fellows and medical students.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |