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What is the Biceps Brachii ?

Where is the biceps brachii located?

Your biceps brachii is a large muscle located at the front of your arm. This muscle, along with the brachialis muscle, occupies most of the anterior (front) compartment of your arm.

The biceps brachii should not be confused with another muscle called the biceps femoris, which is located at the back of your thigh.

Attachments / Origin and Insertion of the Biceps Brachii

The upper part of your biceps brachii is attached to your shoulder bone via two tendons – the long and short head of the biceps. Tendons are strong bands of tissues attaching muscles to bones. The long head of your biceps attaches to the upper part of your shoulder socket (glenoid cavity). Your glenoid cavity is lined with soft tissue cartilage called the labrum. This tissue helps keep the head of your arm bone (humerus) fit into shoulder socket.

The biceps short head, on the other hand, attaches to a bony area in front of your shoulder blade called the coracoid process.

The other end of your biceps attaches to your radius (radial tuberosity). Your radius is one of the two bones of your forearm.

Function of your biceps

Along with your brachialis muscle, your biceps brachii helps with bending your elbow. In addition, your biceps
  • Helps turn your forearm so that your palm is facing up when your elbow is bent or palm is facing forward when your elbow is straight.

  • Helps keep your shoulder stable and acts when you try to move your arm forward.

Injuries / Conditions affecting the biceps

As we age, our tendons tend to become weak through everyday wear and tear. Long-term repetitive overhead movements (e.g. reaching up to carry or grab objects) can contribute to this wear and tear as well.

The weakening of your biceps and/or sudden forceful or jerky overhead movements puts you at risk for biceps injuries.

Injuries or conditions that can affect your biceps include:

If you experience severe pain or you are unable to move your arm after an injury, don’t hesitate to consult your healthcare provider for proper diagnosis and treatment.

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