Muscle Disorders—Arm Injuries and Disorders

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
• 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.

• Arm CT scan (Medical Encyclopedia)
• Brachial plexopathy (Medical Encyclopedia)
• Radial head fracture – aftercare (Medical Encyclopedia)
• Radial nerve dysfunction (Medical Encyclopedia)

Also called: Myopathy

Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.

Causes of muscle disorders include

• Injury or overuse, such as sprains or strains, cramps or tendinitis
• A genetic disorder, such as muscular dystrophy
• Some cancers
• Inflammation, such as myositis
• Diseases of nerves that affect muscles
• Infections
• Certain medicines

Sometimes the cause is not known.

• Caring for muscle spasticity or spasms (Medical Encyclopedia)
• Compartment syndrome (Medical Encyclopedia)
• Contracture deformity (Medical Encyclopedia)
• Creatine phosphokinase test (Medical Encyclopedia)
• Electromyography (Medical Encyclopedia)
• Eyelid twitch (Medical Encyclopedia)
• Hypotonia (Medical Encyclopedia)
• Muscle aches (Medical Encyclopedia)
• Muscle atrophy (Medical Encyclopedia)
• Muscle function loss (Medical Encyclopedia)
• Muscle twitching (Medical Encyclopedia)
• Rhabdomyolysis (Medical Encyclopedia)
• Weakness (Medical Encyclopedia)