Does tendonitis ever fully go away?

The continuum and the doughnut: what goes back to normal and what does not

Does tendonitis ever fully go away is a question whose honest answer depends on what the reader means by fully, and the model clinicians use to think about tendons, the tendinopathy continuum, separates the meanings cleanly enough that the answer becomes yes to the one that matters and sometimes no to the one that does not. The continuum describes a tendon's pathology as a progression through three overlapping states rather than a single disease. The first is reactive tendinopathy, the response of a healthy tendon to a sudden overload, a jump in volume, a new drill, a return at old numbers: the tendon's cells proliferate, the matrix takes on water and the tendon thickens, often visibly, and hurts, and this state is reversible, so that if the load is reduced and then rebuilt gradually the tendon returns fully to its normal structure and function, with no trace on a scan and no lasting weakness, which is the fully go away that most people with a first episode can expect if they manage the load early. The second is tendon disrepair, in which the matrix has begun to disorganise, collagen fibres separate and new blood vessels and nerves grow into the tendon, a state that may recover its structure under good management or may not, depending on how long it has run and how old the tendon is. The third is degenerative tendinopathy, the state of the long-standing sore tendon, in which an area of the tendon has become a core of disorganised collagen, dead and dying cells, ingrown vessels and ground substance, a region that has largely stopped being tendon, and this core often never returns to normal structure on ultrasound or MRI however well the person recovers, so that the honest answer for a degenerative tendon is that the structure may not fully go away. The doughnut is the picture that makes this bearable and clinically useful. The degenerate core is the hole; the healthy, organised tendon that surrounds it, which in most degenerative tendons is the large majority of the cross-section, is the doughnut; and rehabilitation does not try to fill the hole, which is largely beyond repair, but to build the capacity of the doughnut, thickening and stiffening the healthy tendon through progressive loading until it carries the whole load the sport demands with the hole simply along for the ride. This is why a tendon can become completely pain-free and fully functional while its scan looks exactly as it did when it hurt, and why the scans of pain-free elite jumpers and runners routinely show degenerate cores in tendons that have carried them through seasons without a twinge: the picture and the pain are two different things, poorly correlated in every study that has compared them, and nobody treats a picture.

Fully, in the sense that matters: the pain, the function, the flare, and what does not change the core

Fully, in the sense that matters to a lifter or runner, means the pain gone and the tendon doing its job, and on that meaning the answer is yes for most people who do the work, with the work being months of progressive loading rather than weeks of anything. The rehabilitation continuum that treats the tendinopathy continuum runs from isometric holds in the painful early phase, five holds of around forty-five seconds at roughly seventy percent of maximum that cut pain for around forty-five minutes and let heavier work begin, through heavy slow resistance or eccentric loading every second or third day for the middle months, building the doughnut's capacity in the positive window after each session, to the energy-storage and sport-specific work that proves the tendon can take the fast loads of jumping, sprinting and cutting, with a return decided by tests and not by the calendar. The trials of these programmes find most people substantially improved at twelve weeks and continuing to improve to six and twelve months, with pain settled and function restored in the majority and a minority who need longer or a specialist's input. Two honest qualifications belong here. The first is that a recovered tendon keeps a memory: a tendon that has been degenerative and is now pain-free has a doughnut built to a certain capacity and a hole that has not gone, and a new jump in load that exceeds that capacity can bring a reactive flare on top of the degenerative base, which is managed by the same look-back and the same loading and settles faster than the original episode, so that fully gone means fully manageable rather than invulnerable, and the lifter who keeps a maintenance dose of heavy slow loading in the programme keeps the doughnut built. The second is that nothing swallowed changes the core: no supplement, collagen included, has been shown to normalise a degenerate tendon on imaging, and the one collagen trial in tendinopathy, 2.5g a day beside six months of calf strengthening in the Achilles, improved function and return to running against placebo while the loading did the building, an adjunct beside the doughnut's programme and not a filler for the hole, with the pre-loading protocol's marker evidence sitting beside the session in the same way. A reader whose tendon pain has not settled after months of a proper programme, or whose tendon is swollen and warm, stiff for an hour in the morning or painful at rest and at night, has a reason to see a doctor rather than a reason to keep loading, since those are not the patterns of a load problem. The worked example is the habit beside the programme, stated on its true terms: two capsules, 1200mg hydrolysed type 1 marine collagen with 12mg vitamin C at 15% of its reference value plus zinc, 120 for £16.99 at 28p a day, lab tested and UK made, below the 2.5 to 15g research band, carrying vitamin C's collagen formation sentence for cartilage and bones and no tendon claim. Does tendonitis ever fully go away: the pain does, in most people who build the doughnut over months, the hole may stay on the scan, and the scan is not the tendon.

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