Chad video, all reasons are spot on. Sadly wide grip is the only viable option for me when it comes to chin ups because of poor mobility. But that won’t matter anymore, I’m going back to pulls after I recover. Thanks everyone for support!
Yeah I've tried the wide grip chin up, and I must admit, I got quite good mobility in my wrists and shoulders ... yet this grip was very uncomfortable. But I hope Matthew has a quick recovery. The dude was breaking the boundaries of what is possible in this sport. I also thought, perhaps this injury was caused due to a bad warm up ? Putting on too much load too fast ? I guess only he knows ...
2:20 do you see he is leaning to the left,his left arms shoulder is higher than right ,also he has imbalances in pulling and muscles. This plus not enough rest for tendons to heal,muscles grow,tendons bruised to heal,takes 2 to 3 months,micro tears along a stronger muscle than months before along unbalances and one sided loads and tension...wi tears tendons on bad days
Also worth mentioning the other bicep tendon goes basically in front of the shoulder so the shoulder impingmemt problems can very well result also in bicep injuries.
6:03 i believe one of the reason is that neutral grip stretches the bicep and puts it through more range of motion than strict supination since the biceps is supinator, supination shortens it. One way to see it simply is to do a chest stretch with the arm against the wall, you will have less biceps stretch if you have the palm of the hand facing the wall than if you twist your forearm to pronation because it stretches the bicep even more and you will feel it in your elbow immediatly
I think the grip was the main factor. It's not an optimal position for both the bicep and the shoulder throughout the whole movement, although I'm not so sure if it's an inefficient grip - I've done it myself for months and I've got to say that it cuts out a huge chunk of ROM from the chinup compared to a narrow grip. As you said, huge risk of shoulder impingement, and I've noticed that the grip puts a shitload of stress on the inner bicep head, which is the one that went boom in Mathew's case. Also I've watched the clip of the injury several times and I've noticed that Mathew started the movement with a bit of momentum, which might have been a factor. Narrow grip is much safer, heavily taxes the forearms and back, bicep is not utilised much that way.
