Wrist Flexibility: Is It Genetic or a Rehab Issue?

Wrist extension towards the forearm?

Is it normal for my left hand to be able to rotate 90 degrees vertically while my right hand can only rotate about 45 degrees when both hands are turned backward at a 90-degree angle towards the arm? This has been the case since birth, and I do not experience any pain or numbness.
However, if I push my right hand backward, it feels somewhat fatigued.

Bai, 20~29 year old female. Ask Date: 2022/07/26

Dr. Li Yanheng reply Rehabilitation

If there is no history of injury, it is possible that there is a congenital limitation in the angle, which could be due to various factors, such as neuromuscular issues.

Reply Date: 2022/07/26

More Info

Wrist flexibility can indeed be influenced by both genetic factors and rehabilitation practices. The ability of your wrist to flex backward (dorsiflexion) at a 90-degree angle can vary significantly between individuals, and this variation can be attributed to several factors, including anatomical differences, muscle and tendon flexibility, and joint structure.

Genetically, some individuals may have a natural predisposition for greater flexibility due to the structure of their joints, the length and elasticity of their tendons, and the overall composition of their connective tissues. For instance, people with hypermobility syndromes may have looser ligaments, allowing for a greater range of motion in their joints, including the wrists. Conversely, others may have tighter ligaments or a different joint structure that limits their flexibility.

In your case, where you can achieve a 90-degree angle with your left wrist but only about 45 degrees with your right wrist, it could suggest a few possibilities. One possibility is that there may be a genetic component at play, where your left wrist has a more favorable anatomical structure for flexibility. Another possibility is that there could be a history of injury, overuse, or even a lack of stretching or rehabilitation exercises on the right side, which could lead to decreased flexibility.

Rehabilitation and physical therapy can play a significant role in improving wrist flexibility. If you have not engaged in any specific stretching or strengthening exercises for your wrists, it may be beneficial to incorporate these into your routine. Stretching exercises that target the wrist flexors and extensors can help improve flexibility over time. Additionally, strengthening the muscles around the wrist can provide better support and stability, potentially enhancing your range of motion.

It's also important to consider any underlying conditions that might affect your wrist flexibility. Conditions such as arthritis, tendonitis, or previous injuries can lead to stiffness and reduced range of motion. If you experience any pain, discomfort, or significant limitations in movement, it would be advisable to consult with a healthcare professional, such as a physical therapist or orthopedic specialist. They can assess your wrist's condition and provide tailored exercises and treatments to improve flexibility and function.

In summary, wrist flexibility can be influenced by both genetic factors and rehabilitation practices. While some individuals may naturally possess greater flexibility, others may need to engage in specific exercises to improve their range of motion. If you have concerns about your wrist flexibility or experience any discomfort, seeking professional advice can help you understand the underlying causes and develop an appropriate plan for improvement.

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