Can Patients with Low Bone Density Safely Undergo Jaw Surgery? - Orthopedics

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Surgical issues in patients with low bone density?


Hello, doctor.
My bone density measured -2.1 on an X-ray, and I am currently taking calcium supplements.
I would like to ask if it is possible to undergo orthognathic surgery that requires bone screws with low bone density.
Will individuals with low bone density have poorer bone healing? Thank you.

JJ, 40~49 year old female. Ask Date: 2015/06/17

Dr. Huang Minxu reply Orthopedics


Hello, there are many factors that affect bone healing.
From a physiological perspective, for example, patients with diabetes, and from a lifestyle perspective, factors such as smoking, alcohol consumption, and the use of steroids.
The key issue with osteoporosis affecting bone healing is that fixation devices like screws are more prone to loosening.
Currently, we are focusing on two approaches to address the problem of inadequate fixation.
The first is to enhance bone regeneration, such as using parathyroid hormone for bone stability.
Additionally, in orthopedics, bone cement can be used at certain fracture sites to increase fixation strength.
The second approach is to design screws and plates with better fixation properties to reduce the risk of loosening.
For orthognathic surgery, it is advisable to discuss further with plastic surgeons and oral surgeons.
For osteoporosis, regular calcium supplementation is recommended, along with maintaining a normal lifestyle and engaging in moderate, regular exercise.
Thank you.

Reply Date: 2015/06/17

More Info


Patients with low bone density, particularly those diagnosed with osteopenia or osteoporosis, face unique challenges when considering surgical procedures such as jaw surgery (orthognathic surgery) that involve the placement of bone screws or plates. The T-score of -2.1 indicates that you are in the osteopenic range, which means your bone density is lower than normal but not yet classified as osteoporosis (which is defined as a T-score of -2.5 or lower).
When it comes to surgical interventions, particularly those involving bone, several factors must be considered. First, the risk of complications such as delayed healing, nonunion (failure of the bone to heal properly), and increased likelihood of hardware failure (like screws or plates loosening or breaking) can be higher in patients with low bone density. This is due to the reduced structural integrity of the bone, which may not provide the same level of support for the surgical hardware as healthy bone would.

However, it is important to note that many patients with low bone density can still safely undergo surgeries like orthognathic surgery. The key is to ensure that the surgical team is aware of your bone density status and can take appropriate measures to mitigate risks. This may include:
1. Preoperative Assessment: A thorough evaluation by both the oral and maxillofacial surgeon and possibly an endocrinologist or a specialist in bone health can help assess your overall health and the specific risks associated with your low bone density.

2. Surgical Technique: Surgeons may opt for techniques that minimize stress on the bone or use specialized materials and methods that enhance stability. For instance, using smaller screws or plates or employing techniques that promote better bone healing can be beneficial.

3. Bone Health Optimization: Prior to surgery, it is crucial to optimize your bone health. This includes taking calcium and vitamin D supplements, as you mentioned, and possibly other medications that can help improve bone density, such as bisphosphonates or other osteoporosis treatments. Engaging in weight-bearing exercises, if appropriate, can also help strengthen your bones.

4. Postoperative Care: After surgery, close monitoring of the healing process is essential. This may involve follow-up imaging to ensure that the bone is healing properly and that the hardware remains stable. Additionally, continuing to take supplements and possibly adjusting your diet to include more bone-healthy nutrients can aid in recovery.

5. Communication with Your Surgeon: It is vital to have an open dialogue with your surgical team about your concerns and any potential risks. They can provide you with tailored advice based on your specific situation and help you understand the likelihood of successful outcomes.

In conclusion, while low bone density presents certain risks during surgical procedures like jaw surgery, many patients can safely undergo these operations with proper planning and care. The focus should be on optimizing bone health before surgery, employing careful surgical techniques, and ensuring thorough postoperative monitoring. Always consult with your healthcare provider to discuss your specific case and develop a comprehensive plan that addresses your concerns and health needs.

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