Library
MedlinePlus Health Topics
disease topic
Patient-friendly

Arm Injuries and Disorders

Source: MedlinePlus Health Topics, U.S. National Library of Medicine

Last synced 8/9/2026Status: primary verified

Of the 206 bones in your body, three of them are in your arm: the humerus, radius, and ulna. Your arms are also made up of muscles, joints, tendons, and other connective tissue. Injuries to any of these parts of the arm can occur during sports, a fall, or an accident. Types of arm injuries include : Tendinitis and bursitis Sprains Dislocations Fractures (broken bones) Nerve problems Osteoarthritis You may also have problems or injure specific parts of your arm, such as your hand , wrist , elbow , or shoulder .

Educational only
This information is for general education and is not medical advice. Always talk to a licensed U.S. clinician about your situation, medications, or treatment decisions.