Humeral agenesis/hypoplasia is a rare congenital disorder in which the humerus (upper arm bone) is either absent or underdeveloped. This condition can cause a range of physical impairments, including limited range of motion in the shoulder and elbow, as well as deformities of the hand and forearm. In some cases, the condition can also cause neurological problems, such as paralysis of the arm. Treatment typically involves physical therapy and/or surgery to correct any deformities and improve range of motion.

The symptoms of humeral agenesis/hypoplasia vary depending on the severity of the condition. Common symptoms include:

-Shortening of the arm
-Underdeveloped shoulder muscles
-Limited range of motion in the shoulder
-Pain in the shoulder
-Weakness in the arm
-Lack of coordination in the arm
-Difficulty performing activities that require the use of the arm

Humeral agenesis/hypoplasia is a rare congenital condition in which the humerus (upper arm bone) is either absent or underdeveloped. The exact cause of this condition is unknown, but it is believed to be due to a combination of genetic and environmental factors. Possible causes include chromosomal abnormalities, exposure to certain toxins or medications during pregnancy, and maternal health conditions such as diabetes or obesity.

1. Physical therapy: Physical therapy can help strengthen the muscles around the shoulder joint and improve range of motion.

2. Surgery: Surgery may be recommended to correct the deformity and improve shoulder function. This may include shoulder arthroplasty, shoulder arthrodesis, or shoulder reconstruction.

3. Assistive devices: Assistive devices such as shoulder braces or slings can help support the shoulder and improve function.

4. Occupational therapy: Occupational therapy can help with activities of daily living and help improve shoulder function.

5. Prosthetics: Prosthetics may be recommended to improve shoulder function and appearance.

1. Genetic mutations
2. Chromosomal abnormalities
3. Maternal exposure to certain medications or toxins
4. Maternal diabetes
5. Maternal smoking
6. Maternal alcohol consumption
7. Maternal age
8. Low birth weight
9. Premature birth
10. Family history of humeral agenesis/hypoplasia

Unfortunately, there is no cure for humeral agenesis/hypoplasia. Treatment typically involves physical therapy and occupational therapy to help the patient manage the condition. In some cases, surgery may be recommended to help improve range of motion and strength. Medications may be prescribed to help manage pain and discomfort.