Anatomic measurement of wrist scaphoid and its clinical significance

Objective: To provide anatomical basis for the internal fixation of scaphoid fractures. Methods: The shape and vascular lake of 48 dry scaphoids and 36 wet scaphoids were observed. Results: 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 waistwere (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. Conclusion: The internal fixation of scaphoid can be designed according to the anatomical data without damaging the articular surface and blood supply.