ABSTRACT
Objective To investigate the different effects of different resection position of fibula on shape of tibiofibular syndesmosis,and explore the best position of cut fibula,providing reference for clinical surgeon to use fibula reasonably.Methods Ten adult male cadaverie specimens 172-176 cm long were used for 20 shank-ankle specimens.10 cm long fibula was cut proximally at the lower point 1/6,lower point 1/4,lower point 1/3,middle point 1/2 respectively,which was compared with the nornlal one to analyze the changes of shape of tibiofibular syndesmosis.Results Normally,the distance oftibiofibular syndesmosiswas(0.30±0.10)mm.Underthe condition of cut at the lower point 1/6,the distance of tibiofibular syndesmosis was enlarged[(0.54±0.20)mm](P＜0.05).In contrast,under the condition of cut 10 cm long fibula proximally at the middle point 1/2.the distance of tibioffbu1ar syndesmosis hadlittle effect[(0.31±0.20)mm](P＞0.05).Conclusion The best resection position of fibula is in the proximity of the fibula at the point 1/2.
ABSTRACT
ObjecUve To provide anatomical basis for diagnosis and therapeutic methods for treating grea-ter occipital nerve entrapment syndrome.Methods With 10 multiples microscope,the trace,distribution,compres-sion and relationship with occipital vessel of greater occipital nerve were observed and measured on 60 specimens of adult corpse.With a vernier caliper the distance of the easily compressed part of greater occipital nerve with external occipital protuberance,mastoidal and superior nuchal line were measured,and the superficial projeetion of the easily compressed part was marked.Results The course of the nerve could be divided into two parts:active part and inac-tive part.The former laid in the nuchal muscles,the latter ran and anchored to superficial fascia of the scalp,and easily compressed,accompanying with occipital vessel.This point lay in medial to occipital vessel and lateral to ex-ternal occipital protuberance(27.60±5.20)mm,and inferior to superior nuchal line(18.46±5.12) mm,and the superficial projection lay in median and superior 1/3 of the line from external occipital protuberance to mastoid apex. Conclusion Treating the greater occipital nerve compression syndrome by closed operation,the best position for needling lays in a bit inferior to point of median and superior 1/3 of the line from external occipital protuberance to mastoid apex.During the operation we should loose the main trunk compression of the greater occipital nerve as well as the branches compression on it.
ABSTRACT
(1) This is an observation of the posterior parietal, gyrus angularis and posterior temporal arteries of the middle cerebral artery in 100 cerebral hemispheres of chinese adult. Of these arteries, the site of appearance, length, number of branches and their direction are observed, inner and outer diameters of the vessels and thickness of the vessel wall are also measured respectively.(2) Both posterior parietal and gyrus angularis arteries appear at the terminal end of lateral cerebral sulcus, the posterior temporal artery appears at the middle part of the lateral cerebral sulcus (58?4.94%) or at the terminal end (42?4.94%). Most of these arteries measure 1～3 cm in length.(3) Most of these arteries remain as a single stem, some of them branch into two and only a few of them branch into three.(4) The average outer diameter of the above-mentioned arteries is 1.11～1.25 mm, the average inner diameter is 0.93～1.03 mm, and the average thickness of their vessel wall is 0.09～0.10 mm.