Any bounce has the potential to stretch the Cooper's ligaments
- the ones that maintain the structural integrity of breasts - which do not recover once they are over-stretched.
During pregnancy, the Cooper's ligaments
; the bands that attach the chest to the muscle and provide support, are stretched along with the skin.
"In turn, this causes the breasts' main support system, the Cooper's ligaments
, to be put under stress leading to over-stretching.
The first step was to identify the pubic bone, Cooper's ligaments, inferior epigatric vessels, spermatic cord and the type of hernia.
The mesh was fixed to cooper's ligaments by a stitch with prolene 2/0.
With the average 36C breast weighing between 200 grams (8oz) and 300 grams (12oz), this uncontrolled movement puts great strain on the breast's fragile support structure, which comprises only the outer skin and a connective tissue known as the Cooper's ligaments.
The researchers found the two results of this breast movement were pain and discomfort, which is temporary, and a stretching of the Cooper's ligament, which is permanent.
Top cleavologist Catherine Lee, from bra manufacturers Gossard, said: "The real problem for Posh will be later on when her Cooper's ligaments have stretched from not wearing correctly supporting bras or no bras at all.
Breasts are made up of mainly fat glands with no muscle, with the finger-like Cooper's ligaments, which project horizontally from the breast wall, being the only natural support.
The only support breasts have is the surrounding skin and the Cooper's ligaments
, which extend from the nipples to the pectoral muscles.