Labral tear

What it means

Two of the body's biggest ball-and-socket joints — the shoulder and the hip — have shallow sockets. To make those sockets deeper and grip the ball more securely, each has a ring of fibrous cartilage called a labrum running around the rim. A labral tear is a break, fray, or separation of part of that ring. It can happen suddenly during a dislocation, fall, or sharp twist, or it can develop slowly over years of repeated load, often where the bone shape pinches the labrum during certain movements.

Why it appears on a CT or MRI report

MRI — sometimes with a contrast dye injected into the joint (MR arthrogram) — is the main way to see a labral tear. Reports name the joint, the part of the labrum involved (for example anterior, posterior, or superior in the shoulder; anterior-superior in the hip), and the pattern of the tear. The classic "SLAP tear" of the shoulder runs along the top of the labrum where the biceps tendon attaches. Reports often mention related findings: cartilage wear, small cysts near the rim, or the bone shape that may have contributed.

What it usually means

Labral findings are far more common on imaging than many people realise. Studies of pain-free volunteers consistently find labral tears in a large share of adults — sometimes 50% or more in the hip after age 50, and similar rates in the shoulders of overhead athletes. The picture on the scan often does not match the picture in the clinic. When a labral tear is the real source of symptoms, it usually causes catching, clicking, or locking in the joint; a deep ache that's worse with certain positions; and a sense that the joint isn't quite trustworthy. The treatment ladder usually starts with physical therapy focused on the muscles that stabilise the joint, activity modification, and sometimes a steroid injection. Surgery to repair or trim the labrum is reserved for tears that keep causing functional problems despite good conservative care, especially in younger and more active people.

When to follow up

If the report mentions a labral tear but you have minimal symptoms, the finding alone usually doesn't dictate treatment. See a clinician if you have persistent joint pain, catching or locking, a sense of instability, or pain limiting sport or daily life. Sudden severe pain after a dislocation, inability to move the limb, numbness or weakness, or signs of a fully dislocated joint are reasons for urgent care. As always with shoulders and hips, a clinical exam is what links the imaging to the symptoms.

A plain-language way to picture it

Picture a salad bowl with a thick rubber gasket running around its rim, holding a tennis ball in place. The gasket makes the bowl effectively deeper and grips the ball when you tilt the whole thing. A small nick or split in the gasket may leave the ball still sitting fine, especially if you don't tilt too far. A bigger split in the wrong place lets the ball wobble or catch as it moves. That gasket is the labrum, and a labral tear is a break in its grip.