Raven says that no studies have been done that look at whether self-spinal manipulation is linked to stroke. Since chiropractors often manipulate the neck, and doctors don’t, the conclusion was that the association between stroke and neck cracking was random. “It turns out the risk of stroke isn’t any greater with a chiropractor than with a GP. There researchers looked at a certain type of stroke cases, and whether the patient had been to a chiropractor or their GP before the event. He explains that one of the most definitive studies on this is from Canada. “First of all, it's important to know that this type of stroke that’s often mentioned is extremely rare,” says Raven.
It is important to note that the studies concern professionals, like chiropractors, and not “hobby neck crackers.” Manipulation is the professional term used for the flexing and stretching of joints. He says that several major studies have investigated the link between professional neck cracking and stroke. Tim Raven is a chiropractor who is currently working on his doctorate focusing on the neck. Stroke, blood clots and tears in important blood vessels are just some of the words that appear in an online search on the topic.Īll three experts that ScienceNorway has talked to are familiar with the stroke issue. “Sometimes you may hear similar sounds coming from tendons slipping over each other, but that's more common in the ankles.” The danger of stroke "The creaky sounds in the neck are probably happening in the small side joints on either side of the vertebrae," says Per Brodal, a neurobiologist and professor of medicine. This little gas pocket collapses again, creating a pop! The negative pressure is similar to when you struggle to lift a wet frying pan from the kitchen counter.Īs a rule, it takes between 10 and 30 minutes for the pressure to build up again before the joint can be re-cracked. This causes the gas that is dissolved in the joint fluid to be drawn out and converted into a small gas bubble. The volume increases in the space between the joints, creating a void.
The popping sound you hear when you crack fingers, toes and other joints is the joints being pulled apart. Between these glass plates – or the joint surfaces – lies a small layer of joint fluid, which allows the plates to slide neatly over each other. You can imagine a joint as being like two glass plates lying on top of each other. This sound comes from the joints, which tie the bones together. (Illustration: DrJanaOfficial / Wikimedia Commons) The red lines are blood vessels, and the yellow ones are nerves from the vertebrae. Or an off the wall option.An illustration of what the human neck looks like. But, is CA glue really good for structural wood gluing? I was thinking this would wick into the crack. The other option I thought of is to use super thin super glue, like you'd use to glue frets that are already installed. The treble side seems doable, but I'm afraid I won't be able to get glue very deeply into the bass side. I was thinking of maybe thinning it with water a bit, and then using a syringe to get it inside the crack. On one hand, I'd like to use fish glue as it's my favorite for instruments and seems to stick to everything (in case there is a little dirt inside the crack). I was hoping I could get some opinions/thoughts.
However what I'm not sure about is how to get the glue inside the crack. I'm thinking the clamping won't be too hard as the headstock has a flat spot on its back.
(In the last photo I'm pulling the crack apart a little.) The crack is definitely longer and has a wider gap on the treble side, and it's much smaller/tighter on the bass side.Įven though the string tension isn't pulling the crack apart further I'd definitely like to try to fix this. My friend has no idea how long it's been there, or how it happened: A friend dropped off an Ibanez RGA121 for a refret, and during my initial inspection of the instrument I noticed a pretty nasty headstock crack.