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Pain and stiffness behind the ankle from repeated load.

A cruciate ligament torn on a twist. The knee swells fast and gives way.

Twisted ligaments. Surgery is rare; rehabilitation stops it recurring.

Very common, and most settles — but some warning signs need a doctor.

A compressed nerve at the wrist, numbing the fingers at night.

The capsule tightens, so the shoulder moves less. It runs over months.

A disc presses on a nerve: pain, numbness or weakness down its path.

From the joint, the tendons or the muscles. Where it hurts is the clue.

The cartilage lining the knee thins: pain, stiffness, harder walking.

Many causes. Where and when it hurts points to which one.

A tear at the meniscus anchor, so it no longer spreads load.

A torn pad of cartilage: pain, catching, or a knee that locks.

Usually muscles and joints. Pain into the arm or numbness needs a look.

Bone thin enough to break in a light fall, with no symptoms until it does.

Pain around the kneecap, worse on stairs and after sitting bent.

Heel pain from the sole, worst on the first steps of the morning.

A torn shoulder tendon: pain outside, pain at night, hard to lift.

Pain from the back or buttock down the leg, from a nerve under pressure.

Tendons, capsule or joint. The movements that hurt narrow it down.

A click or clunk in the hip when you move the leg, and what causes it.

Pain on the outer elbow from repeated wrist work. Not only in tennis.

A finger tendon catches in its sheath, so the finger sticks or locks.

Two tissues millimetres apart, and why only one of them mends.

Living tissue that rebuilds itself, stores calcium and makes blood.

A cast does not join the bone. It holds the ends still.

A camera the width of a pencil — and what it cannot do.

A few minutes, a very low dose, and a number called a T-score.

Tendons and soft tissue in minutes, watched while you move.

How fast and how strongly a nerve carries a signal, and where.

Menisci, cruciates and cartilage — read against your symptoms.

Far more detail than an X-ray, including things that are not the cause.

Bone clearly, soft tissue barely — what it can and cannot answer.

When bone is thin, what breaks it is a fall — so train balance.

Strong thigh and hip muscles help a knee most, whatever started it.

A little more load than you are used to, kept up over time.

Staying active beats resting. Keeping it up is what works.

Range first, then strength — over months rather than weeks.

More than one reasonable answer, and your life is part of the choice.

They help in some conditions at some moments, not permanently.

What you do while waiting matters more than most people expect.

Several classes, working differently and carrying different cautions.

One option, not the destination everyone reaches.