Ultrasonography measurement of thumb and great toe distal phalanx bottom and its clinical significance / 中华超声影像学杂志

ABSTRACT

Objective To measure the normal sagittal and coronal diameters of thumb and great toe distal phalanx bottom by ultrasonography. Methods One hundred and twenty volunteers' sagittal and coronal diameters of thumb and great toe distal phalanx bottom were measured by ultrasonography. The measurements was analysed by the statistical method. Results The thumb and great toe distal phalanx bottom showed hyperechoic zone,clear boundary with the adjacent fascia and tendon tissue showed low echo area at cross section by high frequency ultrasound. The sagittal diameters of thumb distal phalanx bottom was (8. 07 ± 0. 67)mm in men, while that of great toe distal phalanx bottom was (8. 34 ± 1. 02) mm( t = 1.73, P =0.86).The coronal diameters of thumb distal phalanx bottom was (11.61 ±0.89)mm in men, while that of great toe distal phalanx bottom was (14. 25 ± 0. 84)mm( t = 16. 77, P = 0. 00). The sagittal diameters of thumb distal phalanx bottom was (7. 52 ± 0. 62) mm in women, while that of great toe distal phalanx bottom was (7. 72 ± 0. 67) mm( t = 1. 72, P =0. 14). The coronal diameters of thumb distal phalanx bottom was (10.94 ± 0.97) mm in women, while that of great toe distal phalanx bottom was (13. 51 ±0. 75) mm( t =16.21, P = 0.00). Conclusions The normal sagittal and coronal diameters of thumb and great toe distal phalanx bottom measured by the ultrasonography can guide the operation of wrap-around flap of a great toe with phalanx ungual for thumb II degree defect reconstruction.