Stiff Achilles in the Morning

The first steps out of bed hurt at the back of the heel, and the Achilles feels short and creaky. After a few minutes of walking it loosens and you barely notice it. Then it’s sore again after a run, or the next morning.

That morning-stiffness pattern is the signature of Achilles tendinopathy, and it responds well to a warm-up plus the right loading.

It isn’t inflammation

Long-standing Achilles problems used to be called tendinitis, implying inflammation. The tissue changes actually seen are degenerative: the tendon has been loaded more than it could adapt to, and its structure has changed. The same correction applies at the elbow: tennis and golfer’s elbow, and at the hip: outer hip pain.

The practical consequence is that rest and ice aren’t the treatment. A tendon that isn’t loaded gets weaker, and the problem returns the moment you go back to running. Controlled loading is what rebuilds it. On choosing between the two in the meantime: heat or ice: a physio’s decision guide.

The morning routine

1. Before your feet hit the floor: point and flex the ankle 20 times, gently.
2. Warmth, 10 minutes. Wrap the pad loosely around the lower calf and Achilles, cover on, lowest setting. There’s little padding here, so keep it low and check the skin.
3. Calf stretch: against a wall, 30 seconds with the knee straight, 30 seconds with it slightly bent, each side. Tight calves also drive night cramps.
4. Shoes on before walking around. Bare feet on hard floors first thing is the usual aggravator.

Warmth first, then the work: “my physio said use heat” — but how, exactly?

The loading that rebuilds it

Calf raises, done slowly and progressed over months, are the core of treatment.

• Start with both feet, rising up and lowering slowly. Build towards single-leg.
• Do them with the knee straight and again with it bent, which loads different parts of the calf.
• Progress by adding repetitions, then weight, over weeks.
• Some discomfort during and shortly after is acceptable. Pain that’s worse the next morning means the dose was too high. Ordinary training soreness behaves differently: DOMS, heat or ice?

A physiotherapist setting the dose and progression is worth it here, because judging that “acceptable discomfort” line yourself is genuinely difficult.

One caution: if your pain is right at the point where the tendon meets the heel bone, deep stretching and dropping the heel below a step can aggravate it by compressing the tendon. Keep the stretching gentler and get it assessed.

Load management

Achilles problems follow change: more mileage, more hills, a switch to speed work, new shoes with a different heel drop, or a return after a break. Cut back to what you can do without next-morning pain, then build slowly. The same jump in training produces IT band pain, heel pain and shin splints.

Expect months, not weeks.

See a doctor urgently if…

• You felt a sudden snap or a sensation like being kicked in the back of the ankle, and you can’t push off or rise onto your toes. A ruptured Achilles needs same-day assessment.
• There’s a visible gap or dent in the tendon
• The area is hot, red and swollen with fever
• One calf is swollen, warm and tender, which can be a blood clot

See a physio if…

• It isn’t improving after six to eight weeks of loading
• It keeps returning each time you build up mileage
• You’re on certain antibiotics such as fluoroquinolones, which are associated with tendon problems. Speak to your doctor before loading it hard.

Related: plantar fasciitis shares the same morning-pain pattern and often the same tight calves. An old ankle sprain that was never rehabilitated is another common background factor.

Clinically reviewed by: Nigel Chua (Hand Occupational Therapist) & Louise Yow (Physiotherapist). This article is general information, not a diagnosis. electricheatpad.com sells electric heat pads.