Related Experiment Video
Updated: Mar 28, 2026

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models
Published on: October 9, 2014
Patient Satisfaction After Limb Lengthening With Internal and External Devices
Patients prefer internal limb lengthening nails over external fixators due to increased satisfaction, less pain, and improved physical therapy. This internal device offers a better cosmetic outcome and is the preferred choice for future limb lengthening surgeries.
Area of Science:
- Orthopedics
- Biomedical Engineering
Background:
- External fixation for limb lengthening is associated with significant complications including soft tissue tethering, pain, and reduced joint mobility.
- A novel controllable, telescopic, internal lengthening nail has been developed to mitigate these issues.
Purpose of the Study:
- To compare patient satisfaction rates between internal lengthening nails and traditional external fixation methods for limb lengthening.
Main Methods:
- A comparative study involving 16 patients who have undergone both internal and external fixation for limb lengthening.
- Patient-reported outcomes were assessed using a custom-developed limb-lengthening questionnaire.
Main Results:
- Thirteen of 16 patients completed the questionnaire.
- Patients reported higher overall satisfaction with the internal lengthening nail.
- The internal device was associated with reduced pain, easier physical therapy, and better cosmetic appearance.
Conclusions:
- The internal lengthening nail represents a significant improvement over external fixators for limb lengthening, based on patient preference.
- All surveyed patients indicated a preference for the internal device for future procedures.
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