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Power zone ends & end range motion begins.
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<blockquote data-quote="Benben" data-source="post: 979216" data-attributes="member: 25133"><p>Nice post Brown, you made me stop and think for a bit. Lets add some ergonomics just for Upsate. </p><p></p><p>The OP states pain at "sharp pain the the end of my shoulder while pulling down" with no other symptoms described. The first assumption would be TOS (a reach without mentioning radicular symptoms) or a Bursitis/Impingement Syndrome. Without a better description of the pain or its exact location we are left with our own experience with what we do every day.</p><p></p><p>All truck rear doors are NOT the same. Lifting and lowering the rear doors is assisted by a large spring above them that acts EXACTLY like a garage door spring. This spring can be tightened by automotive to decrease the "weight" of the door. A driver should not have to be lifting the full weight of the door or worse, having to pull down with his/her entire body weight just to get it closed when the spring is there to assist. Write it up and have it adjusted, thats what a DVIR is for!</p><p></p><p>The strap on the rear door should be long! Long enough so that a driver is not forced to reach above their head to grab it. Standing on tip toes just to reach the strap to pull down the door is about the very definition of end range of motion. Write it up! </p><p></p><p>Close the door while facing the door (face your work.) I am as guilty as anyone of this. Trying to hurry I sometimes catch myself closing the rear door as I am turning to walk away. Facing the door while pulling down has you using the just about every upper extremity muscle. Turn 90* and you have removed your Pecs (for the most part) from the equation. Thats the loss of a HUGE amount of cross sectional muscle. More importantly you put a monstrous amount of stretch on the anterior deltoid and pec tendons (do any of us truely stretch as much as we should?) with an egreious amount of stress on the Labrum as the humeral head is forced anteriorly while being externaly rotated, the amount is scary! Now factor in the depresion of the clavicle and acromion onto the humeral head just as the humerious is grossly rotated (WITH A LOAD) in the glenoid cavity. You are asking WAY TO MUCH of labrum and the SITS muscles to protect your shoulder.</p><p></p><p></p><p></p><p>So the Perfect Trinity of the shoulder injury. Pulling down from above your head on a heavy door while turning away. Bursitis or Grade 2 Strain if you are lucky, SLAP tear if you roll the bones and come up craps. All of this could <em><u><strong>possibly</strong></u></em> be avoided by doing 2 things. Use of the DVIR and compleating 1 task before turning to begin another. Ergonomics Upstate <img src="/community/styles/default/xenforo/smilies/2012/itwashim3.gif" class="smilie" loading="lazy" alt=":itwashim3:" title="Itwashim3 :itwashim3:" data-shortname=":itwashim3:" /></p></blockquote><p></p>
[QUOTE="Benben, post: 979216, member: 25133"] Nice post Brown, you made me stop and think for a bit. Lets add some ergonomics just for Upsate. The OP states pain at "sharp pain the the end of my shoulder while pulling down" with no other symptoms described. The first assumption would be TOS (a reach without mentioning radicular symptoms) or a Bursitis/Impingement Syndrome. Without a better description of the pain or its exact location we are left with our own experience with what we do every day. All truck rear doors are NOT the same. Lifting and lowering the rear doors is assisted by a large spring above them that acts EXACTLY like a garage door spring. This spring can be tightened by automotive to decrease the "weight" of the door. A driver should not have to be lifting the full weight of the door or worse, having to pull down with his/her entire body weight just to get it closed when the spring is there to assist. Write it up and have it adjusted, thats what a DVIR is for! The strap on the rear door should be long! Long enough so that a driver is not forced to reach above their head to grab it. Standing on tip toes just to reach the strap to pull down the door is about the very definition of end range of motion. Write it up! Close the door while facing the door (face your work.) I am as guilty as anyone of this. Trying to hurry I sometimes catch myself closing the rear door as I am turning to walk away. Facing the door while pulling down has you using the just about every upper extremity muscle. Turn 90* and you have removed your Pecs (for the most part) from the equation. Thats the loss of a HUGE amount of cross sectional muscle. More importantly you put a monstrous amount of stretch on the anterior deltoid and pec tendons (do any of us truely stretch as much as we should?) with an egreious amount of stress on the Labrum as the humeral head is forced anteriorly while being externaly rotated, the amount is scary! Now factor in the depresion of the clavicle and acromion onto the humeral head just as the humerious is grossly rotated (WITH A LOAD) in the glenoid cavity. You are asking WAY TO MUCH of labrum and the SITS muscles to protect your shoulder. So the Perfect Trinity of the shoulder injury. Pulling down from above your head on a heavy door while turning away. Bursitis or Grade 2 Strain if you are lucky, SLAP tear if you roll the bones and come up craps. All of this could [I][U][B]possibly[/B][/U][/I] be avoided by doing 2 things. Use of the DVIR and compleating 1 task before turning to begin another. Ergonomics Upstate :itwashim3: [/QUOTE]
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