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Calf & shin

Shin splints and calf tightness

Aching along the inside of the shin when running, and calves that stay tight no matter how much you stretch.

What it typically feels like

  • A diffuse ache along the inside edge of the shin
  • Sore at the start of a run, easing, then returning afterwards
  • Tenderness spread along the bone rather than one point
  • Calves that feel permanently tight and cramp easily

Shin splints is a catch-all term for pain along the shin bone, and it turns up almost every time someone increases their running suddenly — new to running, back after a break, or training for something.

What usually causes it

  • Too much, too soon. By far the most common. The muscle and bone adapt more slowly than fitness improves, so the legs are asked for more than the tissue is ready for.
  • Hard surfaces or a sudden change of surface.
  • Worn shoes, or new shoes that are wrong for you.
  • Tight, overworked calves, pulling on their attachments along the shin.
  • Restricted ankle movement, changing how force travels up the leg.

An important distinction

Shin splints is muscle and bone-lining irritation spread along the shin. A bone stress injury is different: pain at one specific point you can cover with a fingertip, which gets worse as you run rather than easing, and which hurts when you hop on that leg.

That distinction matters. Bone stress needs rest and often imaging, not massage. If your pain is one focused point rather than a diffuse ache, say so at assessment — treating a stress fracture with soft tissue work is a way of turning six weeks off into six months.

What treatment involves

Soft tissue work through the calf complex and the muscles along the shin to release what is pulling, plus work on ankle mobility.

Then load management, which is the actual cure — a graded return to running that builds tissue tolerance rather than testing it.

What is actually in the calf & shin

Two bones, a calf built in two layers, and the thickest tendon in the body — all of it absorbing several times body weight on every stride.

Gastrocnemius
The superficial calf muscle, crossing both the knee and the ankle. It is the one that cramps, and the one that tears when a sprint starts badly.
Soleus
Underneath gastrocnemius, crossing the ankle only. Less dramatic and more often the actual problem in a calf that stays tight however much it is stretched. It also refers pain into the heel.
Achilles tendon
Where both calf muscles converge onto the heel bone. Extremely strong, relatively poorly supplied with blood, and slow to recover as a result.
Tibialis anterior and posterior
Front and deep-back of the shin, controlling the foot as it lands and holding up the arch. Shin pain along the inner border usually involves the deep posterior group.

Why it goes wrong

Nearly everything here is a training-load story: too much, too soon, or on a new surface or in new shoes. Shin pain spread along the inner border of the bone behaves quite differently from pain at one sharply defined point, and the second warrants caution and a medical opinion rather than more running. Achilles problems in particular respond to being loaded properly and progressively, and get worse with complete rest.

3D anatomy See the structures involved on the interactive model

The honest next step

This page describes what is common, not what you have. The only way to know is to have it assessed — and your first session includes a full assessment, so you leave knowing what is actually going on.

Book an assessment Call 07922 884 788