Effects of Thermal Capsulorrhaphy on Patellar Displacement
Author Information
Author(s): Zheng Naiquan, Davis Brent R, Andrews James R
Primary Institution: University of North Carolina at Charlotte
Hypothesis
After medial shrinkage of the medial parapatellar capsule, the lateral translation of the patella would be significantly reduced.
Conclusion
No immediate difference was found after thermal shrinkage of the medial parapatellar capsule, while open surgery immediately improved the lateral stiffness of the knee capsule.
Supporting Evidence
- Displacements of cadaveric knees before and after thermal modification were similar to normal subjects.
- No significant differences were found between before and after thermal modification groups.
- Cadaver knees after open surgery showed significantly higher stiffness than before thermal shrinkage.
Takeaway
The study looked at how a treatment called thermal shrinkage affects the knee cap's movement. It found that this treatment didn't change how the knee cap moved right away, but surgery did help.
Methodology
Nine cadaveric knees and ten healthy subjects were tested for lateral displacement before and after thermal shrinkage and open surgery.
Limitations
The specimens were fresh-frozen and came from older individuals, which may not represent the typical patient population.
Participant Demographics
Nine cadaveric knees from individuals aged 62 to 77 years and ten healthy subjects averaging 27 years old.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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