Amelia of upper limb is a congenital disorder in which one or more of the bones in the arm or hand are missing. It is a rare condition that affects about 1 in every 30,000 births. Symptoms may include a short arm, a hand with fewer than five fingers, or a missing thumb. Treatment may include surgery, physical therapy, and prosthetics.

The symptoms of Amelia of the upper limb include:

-Absence of one or more bones in the arm or hand
-Underdeveloped or absent muscles in the arm or hand
-Shortened or absent fingers
-Underdeveloped or absent thumb
-Underdeveloped or absent elbow joint
-Underdeveloped or absent shoulder joint
-Underdeveloped or absent wrist joint
-Underdeveloped or absent forearm
-Underdeveloped or absent palm
-Underdeveloped or absent knuckles

1. Trauma: Trauma to the upper limb can cause fractures, dislocations, and soft tissue injuries that can lead to Amelia.

2. Congenital: Congenital abnormalities such as amniotic band syndrome, Poland syndrome, and limb-body wall complex can cause Amelia.

3. Infection: Infections such as septic arthritis, osteomyelitis, and tetanus can cause Amelia.

4. Neoplasm: Neoplasms such as sarcomas and lymphomas can cause Amelia.

5. Vascular: Vascular disorders such as thrombosis, embolism, and Raynaud's disease can cause Amelia.

6. Neurologic: Neurologic disorders such as brachial plexus injury, spinal cord injury, and peripheral nerve injury can cause Amelia

1. Physical Therapy: Physical therapy can help strengthen the muscles of the upper limb and improve range of motion. Exercises may include stretching, strengthening, and range of motion activities.

2. Occupational Therapy: Occupational therapy can help improve the ability to perform daily activities with the affected limb. This may include activities such as dressing, grooming, and writing.

3. Splinting: Splinting can help support the affected limb and reduce pain.

4. Surgery: Surgery may be recommended in some cases to correct any underlying structural issues.

5. Medications: Medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) and muscle relaxants may be prescribed to reduce pain and inflammation.

1. Repetitive motions: Repetitive motions such as typing, using a mouse, or lifting can lead to upper limb pain and injury.

2. Poor posture: Poor posture can lead to muscle strain and tension in the upper limbs.

3. Overuse: Overuse of the upper limbs can lead to fatigue, pain, and injury.

4. Age: As we age, our muscles and joints become less flexible and more prone to injury.

5. Injury: Previous injuries to the upper limbs can increase the risk of further injury.

6. Occupation: Certain occupations, such as those involving manual labor, can increase the risk of upper limb injury.

7. Medical conditions: Certain medical conditions, such as arthritis, can increase the risk of upper limb injury.

There is no cure for Amelia of the upper limb, but there are treatments available to help manage the condition. These include physical therapy, occupational therapy, splinting, and surgery. Medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) and corticosteroids may also be prescribed to reduce inflammation and pain.