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001).Ĭonclusions: Based on our results and previous findings that demonstrated quicker access time and reduced head movement associated with the use of the screwdriver compared with cutting tools, the former may be a good tool for face-mask removal. The removal success rate was significantly higher at top screws (98%) than at screws adjacent to ear holes (90%) ( P <. Face-mask removal success was significantly different between school 1 (24 of 46) and schools 2 (84 of 92) and 3 (75 of 84 F 2,219 = 24.608 P <. Mean removal time was 26.9 ± 5.83 seconds. Results: Overall, 832 (94%) of 885 screws were unscrewed, and 183 (82.4%) of 222 face masks were removed. Data were analyzed with χ 2, analysis of variance, and Tamhane post hoc tests. Main Outcome Measure(s): Variables included overall success or failure, time required for face-mask removal, and success by screw location. Intervention(s): Each helmet was secured to a board, and a cordless screwdriver was used to attempt to remove all 4 screws attaching the face mask to the helmet. Patients or Other Participants: All football helmets used at 3 local high schools were tested (n = 222, mean games, 9.7 ± 1.2 mean practice weeks, 13.7 ± 1.2).
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Objective: To determine the percentage of face masks that we could unscrew, with a cordless screwdriver, from football helmets used for a full season. Countless impacts, weather, playing surfaces, sweat, and other unforeseen or unknown variables might make the face-mask removal process more difficult on equipment that has been used. A full season of play may have a significant effect on football equipment and its associated hardware. You just have to spin the top with your thumb and index, and the inertia of the spinning wheel will help you get that screw in with ease.Context: The Inter-Association Task Force for the Appropriate Care of the Spine-Injured Athlete recommends leaving a football player's helmet in place and removing the face mask from the helmet “as quickly as possible and with as little movement of the head and neck as possible.” Although 2 groups have studied face-mask removal from new equipment, to our knowledge no researchers have investigated equipment that has been previously used.
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Its grooves make it easy to grab, and you can use it to add momentum to the rotation while screwing.
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The mechanism, Chang claims, allows for the tightening or untightening of small screws with minimal force. By holding the top with your index finger, you can rotate the central part of the body with your thumb and three other fingers. But, when you need extra strength to fight with a tight screw, you can attach the spinner wheel to it. To address the precision jobs, the machine-tooled steel cylinder that forms the body of the Spinner Drive has a built-in rotation mechanism. If you hold the body in a traditional way, with your entire hand, then the Spinner Drive works as any other standard screwdriver. The design team, led by Chuo-Ling Chang, took all that into consideration when designing the Spinner Drive. And of course, for heavy duty, fast-paced work, you need a power tool or electric screwdriver. Unlike a standard handle, a T-handle allows you to apply extra force, thanks to a bigger surface and a different hand position. A standard screwdriver will work in most cases, but sometimes you need a T-handle screwdriver to maximize torque. Precision mechanical jobs require screwdrivers with smooth, gentle rotation that can be easily handled with one hand.