Every night your hip tendon can't repair the day's wear, a little more of it frays, until the band of tissue on the outside of your hip is too damaged to let you lie on that side at all.
For most of her career, Dr. Jillianne Cook and other tendon researchers have been documenting something most women are never told.
The tendons on the outside of the hip do not simply "wear out" with age. In women, they break down on a schedule, and that schedule is tied to menopause.
These tendons anchor your gluteal muscles to the bony point on the outside of your hip, the greater trochanter. The cells inside them, called tenocytes, work constantly to rebuild the collagen the tendon is made of and repair the micro-damage of an ordinary day.
But that repair work depends on two things estrogen used to protect.
The first is collagen production itself.
The second is cellular energy, the fuel the tenocytes burn to do the rebuilding.
When estrogen drops at menopause, both begin to fail.
Collagen production falls.
Repair slows.
The tendon frays faster than it heals.
But here is the part that has worried me most.
Once a gluteal tendon starts breaking down faster than it can repair, it does not stop on its own.
The tenocytes cannot lay down new collagen quickly enough.
They cannot resolve the inflammation burning on the outside of the hip.
They cannot keep up with the wear that happens every time you walk, climb a stair, or roll onto that side at night.
The tendon degrades in silence.
One bad year? Manageable.
But years of a tendon that cannot keep up? The damage becomes far harder to undo, and a tendon that has thinned and frayed for a decade does not bounce back the way a healthy one would.
That is exactly why my reader Carol did not just feel a little stiff in the morning.
It is why she could not lie on her right side for more than a few minutes before a deep burning pressure built against the bone.
It is why she gripped the railing at the top of the stairs, deciding whether today was a "good enough" day to go down.
It is why the outside of her hip caught fire after ten minutes of walking.
It is why she told her husband she felt like she was ninety.
She is 56.
It is why she stopped going to her grandson's games, because the bleachers were torture.
It is why she lay awake at night convinced her body was quietly falling apart, just like her mother's.
But the pain was just the surface.
A gluteal tendon breaking down on the side of your hip also sets off a chain of problems:
Chronic lateral hip inflammation, which lingers, because a low-energy tendon cell struggles to shut it off.
Progressive collagen loss, because the tenocytes cannot rebuild the tendon fast enough to keep pace with daily wear.
A spreading guard pattern, where you unconsciously brace and limp, and the strain shifts to your lower back, your other hip, and your knees.
Lost independence, as a tendon you never used to think about starts deciding which invitations you accept and which you turn down.
Plus, the constant strain on a degrading tendon wrecks your sleep, your mood, and the simplest things, a walk to the mailbox, a single flight of stairs, one night on the painful side.
Carol did not know any of this the afternoon she sat in her car in the driveway and cried, terrified she had only a few good years left.
All she knew was that the glucosamine was not working.
The ibuprofen was tearing up her stomach.
And the hip pain was getting worse every single month.
Her doctor had given her cortisone shots. She got a few weeks of relief each time. The last one barely lasted three. And nobody told her what the research now shows, that repeated cortisone can leave a load-bearing tendon weaker, not stronger.
She had tried glucosamine. Turmeric. Collagen powder. Omega-3. Every hip and joint supplement at the pharmacy.
And nothing touched the pain.
Until her daughter, a physical therapist, found a combination of compounds aimed not at masking the pain, but at the two things a menopausal tendon actually loses.
