The ratio of adduction and abduction strength with age was poor for males and females. At higher degrees of thumb abduction, abduction strength decreased whereas adduction strength increased. No statistical significance was noted in abduction or adduction strength between dominant and nondominant hands. For females, abduction was 2.3☐.9 lbs and adduction was 14.3☓.8 lbs at the 45° position. Males at the 45º right thumb position exhibited an average adbuction strength of 4.3☑.7 lbs and adduction strength of 17±4.5 lbs. Values for abduction and adduction strength were recorded at 30º, 45º, and 60º of thumb abduction. Force is measured through a 50-lb load cell, which is accurate to 0.1 lb. Thumb abduction and adduction were measured using the Thumb Abduction Adduction Measuring device, which consists of a slot to immobilize the palm and a pressure sensitive ring for the thumb. Hand dominance and mid-range grip strength were measured. The study participants were stratified according to age and weight.
Volunteers (294 males and 306 females) with no history of upper extremity disorders or surgery between ages 10 and 70 years were tested. Isolated analysis of this motor function can be important in the pre- and postoperative evaluation as well as the long-term management of patients with disorders that can result in weakness of these specific muscles. A complete quantitative analysis of pure thumb abduction and adduction motor strength in the normal population has not been performed. Quantitative studies of hand motor strength are limited by devices that measure grip and pinch strength. If you continue to have this issue please contact to Healio Shipping times vary as it is based on manufacturers inventory availability and/or ordering processing time.We were unable to process your request. Note: We place orders with our vendors once a week, typically on Mondays.Īre placed with the manufacturer within 24 hours of receipt and are shipped directly from the manufacturer to your specified address. Once we receive your items, we will ship them to you from one of our two domestic warehouses. When orders are placed for these items, we will order them from the manufacture, and they will be included in our next incoming shipment. Require additional information such as delivery environment and service level in order to provide an accurate shipping cost and expected date of delivery from the manufacturer.Ĭan be expected in 10-15 days. Shipping times will vary, depending on the efficiency of the individual manufacturer. We place orders with the manufacturer within a few hours of receipt of your order. Note: All freight and handling charges are calculated on the original order.īack-orders ship and invoice separately and will not be charged additional freight and handling.ĭirect-Ship items are shipped directly from the manufacturer.
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