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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Second lumbrical muscle recordings improve localization in severe carpal tunnel syndrome.
    Author: Brannegan R, Bartt R.
    Journal: Arch Phys Med Rehabil; 2007 Feb; 88(2):259-61. PubMed ID: 17270527.
    Abstract:
    OBJECTIVE: To determine how often the second lumbrical motor potential is present when the abductor pollicis brevis (APB) motor potential is absent in severe carpal tunnel syndrome (CTS). DESIGN: Prospective study of consecutive patients with severe CTS and an absent motor potential from the APB. SETTING: Single-center public hospital-based electromyography lab. PARTICIPANTS: Patients with a clinical diagnosis of CTS who had an absent median sensory response and an absent median motor response to APB on routine nerve conduction testing. Twenty-two hands of 19 patients were examined. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURE: Presence and distal latency of motor potential to the second lumbrical. RESULTS: The second lumbrical potential was present in 17 hands (77%). The distal motor latency to the second lumbrical was prolonged in all (mean, 9.1ms; normative value, <4.1ms). CONCLUSIONS: Second lumbrical recordings improve localization in many patients with severe CTS when routine median sensory and motor conduction studies produce no potentials.
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