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Anthropometric Study of the Radiocapitellar Joint
Matthias Vanhees1, Dave R Shukla1, James S Fitzsimmons1
1Biomechanics Laboratory, Department of Orthopedic Surgery, Mayo Clinic. Rochester, MN.
The Journal of Hand Surgery
|March 28, 2018
Summary
This study found a strong correlation between radial head diameter and capitellum size, with consistent measurements between left and right elbows. These findings aid in designing prosthetics for radiocapitellar arthroplasty.
Area of Science:
- Orthopedic Surgery
- Anatomy
- Biomechanics
Background:
- Limited understanding of the relationship between radial head and capitellum dimensions.
- Lack of comparative data on capitellum size between contralateral elbows.
Purpose of the Study:
- To investigate the correlation between radial head and capitellum dimensions.
- To compare capitellum size between the left and right elbow.
Main Methods:
- Cadaveric elbow specimens (8 pairs, 12 singles) were utilized.
- Digital calipers measured capitellar vertical height and anterior width.
- Radial head measurements included outer diameters and dish diameters.
Main Results:
- High correlations (0.8-0.9) were observed between radial head outer diameter and capitellar dimensions.
- Strong intra-rater reliability (0.77-0.98) was found for all measurements.
- Significant correlation was noted between left and right elbow dimensions.
Conclusions:
- A strong relationship exists between radial head and capitellum size.
- Measurements are consistent between contralateral elbows.
- Findings support radiocapitellar arthroplasty design and preoperative planning.
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