Overview
The distal biceps tendon connects the biceps muscle to the radial tuberosity just below the front of the elbow. It transfers force for elbow bending and, especially, forearm supination—turning the palm upward.
A broad sheet called the bicipital aponeurosis spreads toward the forearm fascia and adds support near the elbow crease.
Common Problems
Gradual tendon pain may develop with repeated pulling, lifting or palm-up loading. A sudden heavy load can cause a partial or complete tear, often with a pop, bruising and a noticeable loss of supination strength. See distal biceps tendinopathy and tear.
When to Get It Assessed
A sudden pop, bruising, changed muscle shape or weakness turning the palm upward should be assessed promptly because timing can affect treatment options.
References
- AAOS OrthoInfo. “Biceps Tendon Tear at the Elbow.” https://orthoinfo.aaos.org/en/diseases--conditions/biceps-tendon-tear-at-the-elbow/
- StatPearls. “Anatomy, Shoulder and Upper Limb, Biceps Muscle.” https://www.ncbi.nlm.nih.gov/books/NBK519538/