Elbow Pain When Straightening Your Arm? Here's What It Means and What to Do
Updated July 20261 minute read
Pain or stiffness straightening the elbow is often the result of a recent strain, sprain, or swelling that limits the end of motion, or lingering stiffness after an injury or heavy use. It's usually mechanical and improves with gentle movement and progressive loading. After a significant injury, or if the elbow won't fully straighten and feels locked, get it assessed to rule out a fracture or a loose body in the joint.
What this usually means
Most likely causes. A recent elbow sprain or strain, swelling, or stiffness after heavy use commonly limits and pain end-range straightening. Less common causes. A loose body in the joint or a prior injury can block full straightening; bursitis can make full extension uncomfortable.
What you can try at home
Keep the elbow gently moving through its comfortable range rather than holding it bent, which stiffens it. Reduce heavy or end-range loading temporarily, and gradually work on regaining full straightening. Warmth can ease stiffness.
When to see a physical therapist
If the elbow won't fully straighten, stays stiff, or is painful at end range for more than a couple of weeks, a PT can restore motion and strength.
Red flags — don't wait
Seek prompt care for an elbow that's locked and won't straighten, deformity or inability to move it after injury, severe swelling, or numbness/cold hand.
How a PT treats this
Treatment restores motion with gentle progressive mobility and strengthening, addressing the underlying strain or stiffness.
Frequently asked questions
Sources (3)
- MedlinePlus: Elbow pain. — NIH/MedlinePlus
- MedlinePlus: Sprains and Strains. — NIH/MedlinePlus
- AAOS OrthoInfo: Sprains, Strains, and Other Soft-Tissue Injuries. — AAOS OrthoInfo
This article is for education only and isn't medical advice. Always talk to a licensed clinician about your specific situation.