ABSTRACT
Objective To explore the feasibility of the adjustable brace asymmetric tethering in concave side for establishing a porcine scoliosis model.Methods Six minority piglets (aged 8-10-week-old, weight 8-10 kg) were selected and the adjustable brace asymmetric tethering in concave side were applied during the procedure.Roentgenography was performed before and immediately after the operation, and 1, 2 and 3 months after the procedure.Cobb angles were measured based in the plain radiograph.Results A piglet died for narcotic drug overdose and the other 5 pigs succeeded in modeling.The cobb angles were (9.0 ±1.6) ° in one month, (11.8 ±1.3) ° in two months and (21.6 ±2.4) ° in three months after the operation . Conclusion It's is an effective way to establish the porcine model of rapidly progressive structural scoliosis by the adjustable brace asymmetric tethering in concave side.It avoids the damage to the spinal elements and could be an ideal model for further study on corrective techniques.
ABSTRACT
<p><b>OBJECTIVE</b>To provide anatomical basis for the internal fixation of scaphoid fractures.</p><p><b>METHODS</b>The shape and vascular lake of 48 dry scaphoids and 36 wet scaphoids were observed.</p><p><b>RESULTS</b>The data of dry bone group and wet bone group were as follows: the height of scaphoid tubercle were (11.28+/-0.94) mm and (10.35+/-1.54) mm; the thickness of scapoid waist were (12.02+/-1.90) mm and (11.21+/-1.20) mm; the width of scapoid waist were (10.59+/-1.11) mm and (11.34+/-1.47) mm; the minimal thickness of the body of scapoid were (6.51+/-1.22) mm and (8.54+/-1.07) mm; the axis length of scapoid were (25.68+/-2.21) mm and (26.50+/-2.56) mm; the width of epicondyle of scaphoid of distal portion, waist and proximal portion were (6.50+/-1.06) mm, (5.14+/-1.01) mm, (4.42+/-1.16) mm and (6.64+/-1.18) mm, (6.01+/-0.75) mm and (5.71+/-0.78) mm, respestively. The main blood vessels came from the dorsal and the radial of wrist and passed through the whole scaphoid along the crest of scaphoid.</p><p><b>CONCLUSION</b>The internal fixation of scaphoid can be designed according to the anatomical data without damaging the articular surface and blood supply.</p>