Akuthota Venu, Plastaras Christopher, Lindberg Kirstin, Tobey John, Press Joel, Garvan Cynthia
Department of Physical Medicine and Rehabilitation, University of Colorado School of Medicine, Anschutz Outpatient Pavilion, Box 6510, Mail Stop F712, Aurora, CO 80045-0510, USA.
Am J Sports Med. 2005 Aug;33(8):1224-30. doi: 10.1177/0363546505275131. Epub 2005 Jul 6.
Distal ulnar neuropathies have been identified in cyclists because of prolonged grip pressures on handlebars. The so-called cyclist palsy has been postulated to be an entrapment neuropathy of the ulnar nerve in the Guyon canal of the wrist. Previous studies utilizing nerve conduction studies have typically been either case reports or small case series.
Electrophysiologic changes will be present in the ulnar and median nerves after a long-distance multiday cycling event.
Cohort study; Level of evidence, 2.
A total of 28 adult hands from 14 subjects underwent median and ulnar motor and sensory nerve conductions, which were performed on both hands before and after a 6-day, 420-mile bike tour. A ride questionnaire was also administered after the ride, evaluating the experience level of the cyclist, equipment issues, hand position, and symptoms during the ride.
Distal motor latencies of the deep branch of the ulnar nerve to the first dorsal interosseous were significantly prolonged after the long-distance cycling event. The median motor and sensory studies as well as the ulnar sensory and motor studies of the abductor digiti minimi did not change significantly. Electrophysiologic and symptomatic worsening of carpal tunnel syndrome was observed in 3 hands, with the onset of carpal tunnel syndrome in 1 hand after the ride.
Long-distance cycling may promote physiologic changes in the deep branch of the ulnar nerve and exacerbate symptoms of carpal tunnel syndrome.
由于长时间紧握车把，骑行者中已发现尺神经远端神经病。所谓的骑行者麻痹被认为是腕部Guyon管内尺神经的卡压性神经病。以往利用神经传导研究的典型研究通常是病例报告或小病例系列。
在多日长途骑行活动后，尺神经和正中神经会出现电生理变化。
队列研究；证据等级，2级。
14名受试者的28只成人手接受了正中神经和尺神经运动及感觉神经传导检查，在为期6天、420英里的自行车旅行前后对双手进行检查。骑行结束后还进行了一份骑行问卷，评估骑行者的经验水平、装备问题、手部位置和骑行过程中的症状。
长途骑行活动后，尺神经深支至第一背侧骨间肌的远端运动潜伏期显著延长。正中神经运动和感觉检查以及小指展肌的尺神经感觉和运动检查无明显变化。3只手观察到腕管综合征的电生理和症状加重，骑行后1只手出现腕管综合征。
长途骑行可能会促进尺神经深支的生理变化，并加重腕管综合征的症状。
