13/10/2026
INFLAMMATION AND TENDON HEALING
If you’ve had a sore shoulder or elbow for weeks, it’s easy to worry that the tendon isn’t healing. The first thing to know is that inflammation isn’t the enemy. It’s the first stage of the body’s repair process.
Tendon healing generally runs in overlapping stages:
1. Inflammation: immune cells arrive to clear damaged tissue and send repair signals.
2. Repair: the body lays down new collagen to rebuild the tendon.
3. Remodelling: the new tissue slowly matures and strengthens over weeks to months.
A recent laboratory study in mice, looking at shoulder tendon irritation, supports this picture. Immune cells called macrophages switched on strongly in the first week, then the signals shifted towards settling down and repair. Calming that early surge reduced degenerative changes under the microscope, but the tendons weren’t any stronger when tested.
That is a useful reminder that less inflammation doesn’t automatically mean better healing. It’s early research in animals, so it can’t yet tell us what to do for patients.
If your tendon has been sore for more than a few weeks, please don’t ignore it. Rest alone, or an injection alone, isn’t always the answer. Get it assessed so the plan fits your tendon and your stage of healing.
Source: Covello et al., J Bone Joint Surg Am, October 2026. DOI (via PubMed)
Any questions? Please ask below 👇