Progressive coxa vara by eccentric growth tethering in immature pigs
Resource
Journal of Pediatric Orthopaedics B,15(4),302-306.
Journal
Journal of Pediatric Orthopaedics B
Journal Volume
15
Journal Issue
4
Pages
302-306
Date Issued
2006-07
Date
2006-07
Author(s)
Abstract
The present study tested progressive coxa vara by eccentric growth tethering that might be used to correct coxa valga in cerebral palsy. Eight young pigs received screw fixation at inferior portion of right femoral head at age 4 months and were killed at age 7.25 months for bilateral femurs for comparison. The neck-shaft angle at the tethered side was significantly less than that at the control side (129.8 vs. 138.3 degrees , P<0.05). Histological study showed bony bar formation. Eccentric growth tethering by one screw resulted in a reduction of neck-shaft angle by 8.5 degrees and shortening of femoral length by 4%.
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