Chronic Achilles Tendinopathy: Eccentric Loading, PRP, or a Corticosteroid Injection Worth the Rupture Risk?
The best-evidenced option for Achilles tendinopathy is also the slowest. A runner with a race in eight weeks is asking whether a faster option is worth what the literature says it actually costs.
Marcus V., a 47-year-old recreational runner training for a half marathon eight weeks away, has had gradually worsening mid-portion Achilles pain for five months — worse at the start of a run, easing somewhat once warmed up, then aching again afterward. He has kept running through most of it, cutting his weekly mileage roughly in half, and has tried NSAIDs and a heel lift with only modest benefit. Ultrasound confirms fusiform thickening of the mid-portion tendon with hypoechoic areas consistent with chronic tendinosis rather than a partial tear. He is training-plan-anxious rather than pain-catastrophizing — his first question at today's visit is not whether he'll ever run pain-free again, but whether anything can get him through eight more weeks well enough to start the race he's already paid for.
The problem is that the option with the strongest evidence is also the slowest, and the faster options each carry their own real cost. Eccentric calf-raise loading, the protocol Alfredson and colleagues established in a landmark 1998 study and confirmed repeatedly since, remains the best single evidenced intervention for chronic mid-portion Achilles tendinopathy — but it works over roughly twelve weeks of consistent daily loading, a timeline that runs past his race regardless of when he starts today. Corticosteroid injected around or into the Achilles tendon carries a real, well-documented rupture risk specific to this tendon in a way that doesn't apply the same way to most other tendons considered for injection, a risk that rises further with any concurrent fluoroquinolone exposure and generally leads current sports-medicine guidance to caution against it here even though it isn't formally contraindicated. Platelet-rich plasma, promoted heavily in both patient-facing media and some smaller trials as a faster biologic alternative, was tested directly against saline injection in chronic Achilles tendinopathy by de Vos and colleagues in a 2010 randomized trial published in JAMA, and found no significant difference in outcome between the two at any follow-up point measured.
Sports medicine clinic, five months of heel pain
Start eccentric calf-raise loading today, on the Alfredson protocol. It's the single best-evidenced intervention for chronic mid-portion Achilles tendinopathy, repeatedly confirmed since Alfredson and colleagues' original 1998 work, and it produces real tendon remodeling rather than just symptom control. I'll be honest that a full twelve-week course runs past his eight-week race date — but starting it now still gives him partial improvement by then, and it's the only option on the table that actually treats the tendon rather than just getting him to the start line.
I agree eccentric loading should start today regardless of what else we decide — that part isn't in dispute.
Where I want to be direct is about corticosteroid, because I think it's worth naming even though nobody's proposed it yet: injecting around or into the Achilles carries a real, well-documented rupture risk specific to this tendon, not a generic injection-site caution, and it rises further with certain drug exposures. I've managed the rupture, not just read about it, and I wouldn't offer it here for a self-imposed race deadline that isn't medically necessary.
No disagreement from me on either point — steroid injection stays off the table, and eccentric loading starts today regardless of the timeline mismatch.
The one thing I'd add before he asks about it himself: de Vos and colleagues ran a direct randomized trial of platelet-rich plasma against plain saline injection in exactly this condition, published in JAMA in 2010, and found no significant difference between them at any follow-up point. It's marketed as a faster biologic option, but the best evidence available says it isn't actually faster or better than an inert injection — I wouldn't offer it here either, whatever the timeline pressure.
Eccentric loading begun today with a written progression schedule; NSAIDs continued short-term for symptomatic relief around long runs only. Race-day expectations discussed directly: reduced mileage and a walk-run strategy if pain recurs mid-race, rather than pushing through at full pace.