Key result
Patella dislocation in growing rabbits significantly altered femoral version compared to control knees at 5 months post-surgery (-5.50° vs -10.90°, p=0.001).
Why the study?
The influence of patella dislocation on torsional alignment development remains unknown.
Does patella dislocation alter femoral version and tibial torsion in growing rabbits?
Does patella dislocation alter femoral version and tibial torsion in growing rabbits?
Absolute Event Rate: -5.5% vs -10.9%
p-value: p=0.001
Early patellar dislocation leads to abnormal femoral version in growing rabbits, suggesting that prolonged patellar instability during growth may cause torsional malalignment in the lower limbs.
Patellar dislocation may induce femoral torsional changes in immature limbs; hypothesis-generating for pediatric malalignment, prospective human data needed.
Background: Torsional malalignment in transverse plan has been regarded as a risk factor for patella dislocation. But the influence of patella dislocation for torsional alignment development remains unknown. The present study aims to investigate whether the torsion alteration of the hindlimb occur after patella dislocation in growing rabbits. Methods : Thirty rabbits that were 1 months old were included in the study. The left knees of each rabbit (N = 30 knees/group), were underwent patella lateral dislocation operation and defined as the experimental group. The right knees of each rabbit, defined as the control group (N =30 knees/group), did not undergo any surgical procedures. Computed tomography was performed on each knee immediately post-surgery and 5 months post-surgery to measure femoral version and tibial torsion. The angles was analyzed between the experimental group and control group. Results : The femoral version and tibia torsion in the experimental and control group were not significantly different immediately after surgery. However, 5 months after surgery, the femoral version of the experimental group (-5.50±6.13°) was significantly different with that of the experimental group (-10.90±4.74°)( P < 0.05). But the tibia angle in the experimental group (7.17±7.25°) and control group (4.47±6.34°) were not significantly different ( P = 0.144). Conclusion : Patella dislocation can lead to significant change in femoral version in growing rabbits. Thus if adolescents suffer from patella dislocation or instability for a long time in growing period, the torsional malalignment in lower limbs may occur.
No takes yet. Share an insight, caveat, or question.
Niu et al. (2020) studied Patella dislocation (n=30). Patella lateral dislocation surgery vs. No surgical intervention (contralateral knee) was evaluated on Femoral version at 5 months post-surgery (p=0.001). Patella dislocation in growing rabbits significantly altered femoral version compared to control knees at 5 months post-surgery (-5.50° vs -10.90°, p=0.001).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: