Rupture of the long head of the biceps brachialis tendon

RUPTURE OF THE LONG HEAD OF THE BICEPS BRANCHIALIS TENDON

A rupture of the long head of the biceps brachialis tendon is an injury at the front of the shoulder often described as a sudden “pop” followed by pain, bruising and a visible bulge of the biceps muscle lower down in the upper arm (the classic Popeye sign). This tendon originates from the top of the shoulder socket, runs through a groove in the upper arm bone and joins the biceps muscle helping you bend the elbow and turn the forearm palm-up. In many cases the tendon has already degenerated over time and finally tears when exposed to a sudden heavy load such as lifting or pulling. It is more common in middle-aged and older adults often with a background of shoulder or rotator cuff problems yet the arm usually remains functional and conservative management with physiotherapy plays a key role in recovery.

What happens to the tendon

The long head of the biceps tendon is one of the two tendons attaching the biceps muscle to the shoulder and it is the one most commonly torn. It runs in a narrow bony groove and is constantly loaded during lifting and overhead activity so over time it may develop tendinopathy and small degenerative changes. A sudden strong contraction or forceful movement can then cause a complete rupture leading to an initial sharp pain followed by bruising in the upper arm and a characteristic bulging of the biceps muscle.

Patients usually report pain at the front of the shoulder, weakness with elbow flexion or forearm rotation and a change in the shape of the upper arm. Diagnosis is based on history, physical examination and imaging when needed. Management is often conservative with gradual return to activity and a physiotherapy programme focusing on pain control, restoring range of motion and strengthening the shoulder and elbow muscles, while in selected individuals with higher demands surgical procedures such as tenodesis may be considered.

A practical rehabilitation plan for shoulder and biceps

In rupture of the long head of the biceps brachialis tendon the goal of physiotherapy is not only to ease pain but also to provide a safe pathway back to using the arm in everyday life. In the early phase the focus is on avoiding movements that irritate the shoulder, maintaining comfortable range of motion and gradually reactivating the muscles without sudden heavy loading. Later the programme progresses to scapular control work, strengthening of the shoulder and upper arm muscles and functional exercises that resemble the tasks you need to perform at work or at home.

At the same time your physiotherapist helps you identify positions and activities that overload the tendon, adjust how you lift objects or train and incorporate a simple home-based routine that you can realistically follow. In this way a long head rupture, which often leaves the arm still usable, can be managed more effectively so that pain reduces and you feel that your upper limb supports you more and more in daily activities.

What is a rupture of the long head of the biceps brachialis tendon?
It is a tear of the long head biceps tendon at the shoulder causing pain at the front of the shoulder, bruising and often a bulge of the muscle lower in the upper arm.
What are the most common symptoms?
A sudden popping sensation, pain at the front of the shoulder, weakness when bending the elbow and a visible change in the shape of the biceps muscle.
Can it happen without a major injury?
Yes, the tendon often degenerates over time and may finally tear during what seems like a routine lift or movement.
In which age group is it most common?
It is most common in middle-aged and older adults especially when there is existing biceps or rotator cuff tendinopathy in the same shoulder.
Will I lose all strength in my arm?
Usually no, because the short head of the biceps stays attached although you may notice some reduction in elbow flexion and forearm rotation strength.
How can physiotherapy help in this injury?
It helps reduce pain, maintain good shoulder mobility and strengthen the surrounding muscles so the upper limb is better supported in daily tasks
How long does healing and rehabilitation usually take?
Initial healing may take several weeks, and strength and function tend to improve over a few months with an appropriate rehabilitation programme.
Can I keep working?
In most cases you can continue working with adjustments to lifting and repetitive tasks and guidance from your physiotherapist.