Extra Bone Growth in the Pelvis: Is It Normal?

Q: Extra Bone Growth in the Pelvis: Is It Normal?

Ya-Yo： Your issue can be diagnosed with an X-ray. <br>I recommend visiting the orthopedic department for further evaluation. <br>Wishing you good health.

Regarding a newly discovered bone?

Hello Dr.
Wang, I am currently a student studying in Taipei and I would like to ask you, "Why do I have an extra bone growing at the bottom of my pelvis, aligned with my spine, and sometimes when I sit, I feel pressure on my spine?" Is this normal? I have noticed that others do not seem to have this extra bone, and I only discovered it in high school.
Thank you for your answer.

Ya You, 20~29 year old female. Ask Date: 2006/11/11

Dr. Wang Shouji reply Orthopedics

Ya-Yo: Your issue can be diagnosed with an X-ray.
I recommend visiting the orthopedic department for further evaluation.
Wishing you good health.

Reply Date: 2006/11/11

More Info

The phenomenon you are describing, where an additional bone or bony prominence appears in the pelvic region, can be concerning and warrants a thorough understanding. First, it is essential to clarify that the human skeleton is subject to variations, and some individuals may develop additional bony structures due to various factors, including genetics, physical activity, and developmental changes during adolescence.

1. Normal Variations: It is not uncommon for individuals to have anatomical variations, including extra bony growths or prominences. These can be benign and may not cause any significant issues. However, if you are experiencing discomfort or pressure on the spine when sitting, it is crucial to investigate further.

2. Developmental Changes: During adolescence, the body undergoes significant changes, including growth spurts and the maturation of bones. The pelvis, being a critical structure that supports the spine and facilitates movement, can also undergo changes. If you noticed this growth during high school, it could be related to the natural developmental processes occurring during that time.

3. Potential Causes: The extra bone growth could be due to several factors:
- Ossification: Sometimes, areas of cartilage can ossify (turn into bone) due to stress or strain. If you were involved in activities that put stress on your pelvis, this could lead to the formation of additional bone.

- Genetic Factors: Some individuals may have a genetic predisposition to develop additional bony structures. This can be seen in conditions like accessory bones or extra ossicles.

- Postural Issues: Poor posture or uneven weight distribution can lead to compensatory changes in the skeletal structure, potentially resulting in abnormal bone growth.

4. Symptoms and Concerns: The sensation of pressure on the spine when sitting is a symptom that should not be ignored. It could indicate that the extra bone is affecting your posture or the alignment of your spine. If the growth is causing discomfort or affecting your daily activities, it is advisable to seek a medical evaluation.

5. Medical Evaluation: A healthcare professional, such as an orthopedic specialist, can perform a physical examination and possibly imaging studies (like X-rays) to assess the nature of the bony growth. They can determine whether it is a normal variant or if it requires treatment.
6. Treatment Options: If the extra bone is causing significant discomfort or functional issues, treatment options may include physical therapy to strengthen the surrounding muscles and improve posture, or in some cases, surgical intervention to remove the bony growth.

In conclusion, while the presence of an additional bone in the pelvic region can be a normal anatomical variation, the associated symptoms you are experiencing warrant a thorough evaluation. It is essential to consult with a healthcare provider to ensure that there are no underlying issues and to discuss any necessary treatment options. Remember, your health and comfort are paramount, and seeking professional advice is always a prudent step.

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