If a normal, well-functioning labrum aids lubrication of the hip..
Then a torn labrum
impairs lubrication.
Like a poorly lubricated machine part..
Joint cartilage is subject to
more stress + higher peak force.
Furthermore, as the bump is forced beyond the labrum into the socket
..it directly damages the lining cartilage. Splits in Amanda’s cartilage let joint fluid pump into the underlying bone
..with the same high force that is transmitted through the hip. Asking how much force points to
that other contributing factor..Amanda's bodyweightAmanda had put on
bodyweight..
Bodyweight is an emotive subject.
So, I talk to my patients about
..its effect on the joint. Amanda was
+25kg overweight.
That doesn't look that bad written down.
What's in a few kilograms..?
In
Newsletter #028 we went into detail, but here's the long and short of it..
Being
1-stone OVERWEIGHT (
14lbs or 6kg) is like hitting our joints with a
5-stone mallet (
70lb or 30kg) through the
1 to 3 MILLION steps we take each year.
That is a lot..AND Amanda's hip is hammered by
4x that force.Perhaps
450kg of force total with every step,
..or nearly
half a metric tonne.Forces around the hip REALLY multiply up..That's the seasaw schematic..
Muscles closer to the joint pull with
much more force.(Click here or on the pic for a full 8-page explainer)