| beefycol -> RE: knees again (Apr. 12 2008 21:51:26) |
quote:
ORIGINAL: stone14
i posted a thread about cracking knees no long ago, but now ive noticed a couple of times in the last couple of weeks, when i stand up from sitting down i get a sharp pain in my knee.
does anyone no what this could be? could it be from wear and tear from squats etc? what can i do to help strengthen my knees?
my back injury is just about recovered andi dont want my knees to be my next injury, i wana start strength and powerlifting. will knee straps be a good idea? (i like a wide stance whwn squating and deadlifting.)
hi mate some lads at my gym use them they say it helps loads, i wanna get some.
cant remember.... think.... at school learnt what the cracking, clicking is your ligaments, (rapid stretching)
small article
The physical mechanism is as yet unproven, but suggested theories include:
Cavitation within the joint—small cavities of partial vacuum form in the fluid then rapidly collapse, producing a sharp sound. This explains the popping that can occur in any joint, such as during spinal manipulation. Synovial fluid cavitation is the most likely theory and substantial evidence exists in support of it. (Discussed in detail below.) [3]
Rapid stretching of ligaments.
Intra-articular (within-joint) adhesions being broken.
Of these theories perhaps the most popular is cavitation. When a manipulation is performed, the applied force separates the articular surfaces of a fully encapsulated synovial joint, which in turn creates a reduction in pressure within the joint cavity. In this low pressure environment, some of the gases that are dissolved in the synovial fluid (which are naturally found in all bodily fluids) leave the solution creating a bubble or cavity, which rapidly collapses upon itself, resulting in a "clicking" sound. This process is known as cavitation. The contents of the resultant gas bubble are thought to be mainly carbon dioxide.[4] The effects of this process will remain for a period of time known as the "refractory period", which can range from a few minutes to some hours while it is slowly reabsorbed back into the synovial fluid. There is some evidence that ligament laxity may be associated with an increased tendency to cavitate
|
|
|
|