Identification of the relationships between sagittal plane and coronal plane curvature in guppy models.
OBJECTIVE
To explore the relationship between sagittal plane and coronal plane curvatures in guppies by investigating the curvature angles of sagittal and sagittal-coronal guppies.


METHODS
After mating between 1000 spinal curvature guppies, 124 guppies (3-month old) were screened from progenies for the present study. Photos of all fishes were taken and the sagittal and coronal angles were calculated via angle measure tool of Photoshop 12.0 software. All data were analyzed by SPSS 11.0.


RESULTS
In sagittal and sagittal-coronal curvature guppies, there was a significant linear correlation between sagittal angles and coronal angles. In 48 sagittal-coronal curvatures, their sagittal angles were above 40°, meanwhile, in 76 sagittal guppies, their sagittal angles were mostly below 40°.


CONCLUSIONS
These findings indicated that the occurrence of coronal curvature might be later than sagittal curvature and could be influenced by other factors. Sagittal angles 40° might be involved in the onset of coronal curvature.
Department of Orthopedics, Changhai Hospital of Shanghai, No. 168 Changhai Road, Yangpu District, Shanghai 200433, China.
Zong-de
ZD
Yang
Department of Neurosurgery, Changhai Hospital of Shanghai, Shanghai 200433, China.
Zhi-gang
ZG
Yang
Department of Orthopedics, Changhai Hospital of Shanghai, No. 168 Changhai Road, Yangpu District, Shanghai 200433, China.
Qiu-lin
QL
Zhang
Department of Orthopedics, Changhai Hospital of Shanghai, No. 168 Changhai Road, Yangpu District, Shanghai 200433, China.
Jing-feng
JF
Li
Department of Orthopedics, Changhai Hospital of Shanghai, No. 168 Changhai Road, Yangpu District, Shanghai 200433, China.
Kai
K
Chen
Department of Orthopedics, Changhai Hospital of Shanghai, No. 168 Changhai Road, Yangpu District, Shanghai 200433, China.
Ying-chuan
YC
Zhao
Department of Orthopedics, Changhai Hospital of Shanghai, No. 168 Changhai Road, Yangpu District, Shanghai 200433, China.
Chuan-feng
CF
Wang
Department of Orthopedics, Changhai Hospital of Shanghai, No. 168 Changhai Road, Yangpu District, Shanghai 200433, China.
De-wei
DW
He
Department of Orthopedics, Changhai Hospital of Shanghai, No. 168 Changhai Road, Yangpu District, Shanghai 200433, China.
Xiao-dong
XD
Zhu
Department of Orthopedics, Changhai Hospital of Shanghai, No. 168 Changhai Road, Yangpu District, Shanghai 200433, China. Electronic address: limingdbd@hotmail.com.
Ming
M
Li
D000818:Animals; D004195:Disease Models, Animal; D005260:Female; D007091:Image Processing, Computer-Assisted; D008297:Male; D010641:Phenotype; D010781:Photography; D011036:Poecilia; D012600:Scoliosis / Q000473:pathology*; D013131:Spine / Q000473:pathology*
Coronal curvature; Guppies; Spinal curvature