How long does it take for a torn tendon to heal without surgery?

The non-operative timetable by tendon: the Achilles, the biceps and the rotator cuff, and what each does instead of reattaching

How long does it take for a torn tendon to heal without surgery is a question that a reader asks with one tendon in mind and that the internet answers with one figure, usually a number of weeks, and the honest page refuses the figure because the tendons that can heal without surgery heal on clocks that differ by a factor of six, some of them heal by not reattaching at all, and two cannot heal without surgery whatever the clock. The Achilles comes first because it is the tendon most often torn in sport and most often asked about. A complete Achilles rupture treated without surgery is placed in a functional boot with wedges that hold the foot pointed downward, bringing the torn ends together or nearly so, and the reader bears weight in the boot from the first days or weeks and moves the ankle within the boot's range, with the wedges removed one by one over about eight weeks until the foot is flat; the boot comes off at around two to three months, running is reintroduced at around four to six months, and return to sport is at nine to twelve months, decided by tests of calf strength and hopping rather than by the calendar. The trials that compared this with surgical repair found re-rupture rates that were similar and function that was similar or better, provided the non-operative arm used a boot with early movement, since the older trials that compared surgery with a cast favoured surgery; and in both arms a calf strength deficit of around ten to fifteen percent remains at a year and often for good, because the healed tendon is longer and the muscle shorter than before. The distal biceps tendon, torn from the radius during a heavy curl or a catch, gives a different kind of non-operative answer, because it does not reattach: the muscle retracts up the arm, the Popeye bulge appears, and over a few months the tendon's end scars to the surrounding tissue so that the muscle pulls through scar rather than bone. Everyday function is good, elbow flexion loses some strength because the brachialis and brachioradialis take over, and supination, turning the palm up against resistance, loses around a third of its strength for good, which is the cost a manual worker or a lifter weighs against surgery in the first weeks while the tendon can still be reattached, and a desk worker may accept. The rotator cuff gives a third kind of answer. A chronic full-thickness tear of the supraspinatus, common after fifty and often found on scans of people with no pain, does not reattach either; the non-operative route is physiotherapy over three to six months that trains the remaining cuff and the shoulder blade's muscles to centre the ball in the socket without the torn tendon, with good results in a majority of patients in the trials that compared it with repair, and surgery held for those who fail or who have an acute traumatic tear in a younger shoulder, where the tendon's quality and the chance of healing to bone are better. The limits of healing alone across tendons are on the tendons heal naturally page.

The mallet finger, the two tendons that are always surgical, what the clocks are made of, and the adjunct's true place

The mallet finger is the fastest non-operative tendon and the one with the strictest rule: the extensor pulled off the fingertip bone heals in six to eight weeks if the end joint is held straight continuously, since the torn ends meet only when the joint is straight and a single bend in the early weeks lets the healing fail, followed by a period of night splinting; it is the one torn tendon on this page whose non-operative clock is measured in weeks, and it is measured in weeks because the tendon is thin, the gap is small and the splint closes it. Then come the two for which the question has no answer. A complete rupture of the quadriceps tendon above the kneecap, or the patellar tendon below it, leaves the knee unable to straighten against gravity, because the extensor mechanism, the single chain from thigh muscle through kneecap to shin, cannot transmit force across a gap, and a gap that is left does not close, since the quadriceps pulls the ends apart with every attempt to stand; both are repaired surgically and soon, with the rehabilitation that follows being protected then progressive over months. A reader who cannot straighten the knee or lift the heel off the bed after a fall has a surgical injury and the non-operative clock does not exist for it. What the clocks on this page are made of is the remodelling stage, and that is why nothing shortens them. Whichever tendon and whichever route, the gap or the repair fills first with the weak, disorganised type 3 scaffold of proliferation and then, over months stretching toward a year, remodels into aligned type 1 collagen under the loads placed through it, and the dates on this page, boot off at two to three months, running at four to six, sport at nine to twelve, are the dates at which the remodelling tissue can bear each load, measured in the trials by re-ruptures and strength tests rather than chosen; early weight-bearing moved them earlier than a cast because it fed the remodelling, and nothing eaten moves them at all. Ligaments have their own version of this timetable, with the lax ligament that never reattaches as its hardest case, on the ligaments without surgery page, and the levers that are accelerable across both tissues are sorted on the fastest way to heal tendons and ligaments page. The floor under every non-operative clock is protein at around 1.6 to 2 grams per kilogram, vitamin C, not smoking, which roughly doubles complications and slows the few vessels a tendon has, sleep, and blood glucose control for a diabetic reader, none of which shortens a clock and each of which removes a brake. Collagen's evidence is not in rupture at all. The marker trial gave 15g gelatin with vitamin C an hour before loading and measured a blood marker of synthesis in healthy men; the one outcome trial gave 2.5g beside six months of calf strengthening for Achilles tendinopathy, a thickened painful tendon that had not torn, and found more improvement than placebo beside the same exercise; no trial has given collagen to a torn tendon in a boot, a sling or a splint, and the protocol was timed to a loading stimulus that a torn tendon's early months do not supply. The adjunct's true place is therefore beside the loading phase of the rehabilitation, the heavy calf raises after the boot or the resistance work after the sling, if anywhere, and not in the weeks of protection. The worked example is that adjunct at habit scale, 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 15g protocol dose, carrying vitamin C's collagen formation sentence for cartilage and bones and no tendon claim. How long does it take for a torn tendon to heal without surgery: by tendon, from six to eight weeks for a mallet finger to nine to twelve months for an Achilles, with two tendons for which the answer is that it does not.

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