Impact on Bone Length After External Fixation: What You Need to Know - Orthopedics

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I had an external fixation device and accidentally bumped it, causing it to become slightly shorter. Will this have any impact?


I have a metacarpal fracture that was treated with an external fixation.
I accidentally bumped it, and it has shortened slightly, but there is no pain.
Will this have any impact?

Axiang, 20~29 year old female. Ask Date: 2016/07/24

Dr. Shi Guozheng reply Orthopedics


If the injury is on the hand, wrist, fingers, or elbow joint and there is no bleeding or nerve damage, then it is generally not a concern.
However, if there is severe pain or signs of wound infection, it is advisable to consult a physician for evaluation.

Reply Date: 2016/07/24

More Info


When it comes to the impact of external fixation on bone length, particularly after a fracture, there are several important factors to consider. External fixation is a method often used to stabilize fractures, especially in complex cases or when internal fixation is not feasible. It involves the use of a frame outside the body, which is attached to the bone through pins or screws. This method allows for stabilization while also providing the potential for some degree of adjustment during the healing process.

In your case, you mentioned experiencing a slight shortening of the bone after sustaining a fracture in your metacarpals (the bones in your hand). The fact that you are not experiencing any pain is a positive sign, as it suggests that the bone is healing properly and that there is no immediate complication such as nonunion or malunion.


Potential Impacts of Bone Shortening
1. Functional Implications: A slight shortening of the bone may not significantly affect your overall hand function, especially if the shortening is minimal. The hand is a highly adaptable structure, and many individuals can compensate for small changes in bone length through adjustments in muscle function and joint mechanics.

2. Joint Alignment: If the shortening leads to altered joint alignment, it could potentially affect the range of motion or lead to discomfort over time. However, if the joints remain well-aligned and functional, the impact may be negligible.

3. Growth and Remodeling: Bones have a remarkable ability to remodel over time. If the shortening is due to a healing process, the bone may continue to adapt and remodel, potentially mitigating some of the effects of the shortening. However, this process can take time, and the extent of remodeling can vary from person to person.

4. Long-Term Considerations: In some cases, significant shortening can lead to long-term issues such as arthritis or joint pain, particularly if it alters the load distribution across the joints. However, in your case, since the shortening is slight and you are not experiencing pain, the long-term implications may be minimal.


Recommendations
- Follow-Up Care: It is essential to have regular follow-ups with your orthopedic surgeon or healthcare provider to monitor the healing process. They may recommend imaging studies, such as X-rays, to assess the alignment and healing of the bone.

- Physical Therapy: Engaging in physical therapy can help improve strength, flexibility, and function in the affected hand. A physical therapist can provide exercises tailored to your specific needs and help you regain full function.

- Monitoring for Symptoms: Keep an eye out for any new symptoms, such as pain, swelling, or changes in function. If you notice any of these, it is important to consult your healthcare provider promptly.

- Activity Modification: While you may not feel pain, it is wise to avoid activities that put excessive strain on the healing bone until you receive clearance from your healthcare provider.

In conclusion, while a slight shortening of the bone after external fixation can raise concerns, the absence of pain and the ability to function normally are encouraging signs. Regular follow-up and monitoring, along with appropriate rehabilitation, can help ensure that you maintain optimal function and address any potential issues that may arise in the future.

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