桡骨茎突解剖形态学分型及临床意义

Morphological classification of styloid process of radius and its clinical significance

目的观测桡骨茎突部骨性结构的特点及分型,为临床局部封闭及针刀治疗提供解剖学依据。方法对61例成人桡骨茎突部的沟、嵴、掌侧骨嵴最高点至背侧骨嵴最高点的宽度、掌侧骨嵴最高点至桡骨茎突尖的垂直距离进行观测并对桡骨茎突部的骨性形态进行分型。结果双沟型占63.93%(39例),表现为骨沟较深,且中央有细小的纵行骨嵴将其分成两条骨沟;单沟型占27.88%(17例),表现为其中央无骨嵴,而融成一整体较宽的骨沟;平坦型的占8.19%(5例),表现为其间无明显的骨沟,呈平坦状。所有标本的掌侧骨嵴较背侧骨嵴明显凸起。掌侧骨嵴最高点到背侧骨嵴最高点的宽度为(11.48±1.36)mm,掌侧骨嵴最高点到桡骨茎突尖的垂直距离为(17.00±2.02)mm。结论桡骨茎突部的掌侧骨嵴在桡骨茎突部最突出,该骨嵴可作为临床操作的定位标志。

Objective To provide anatomical data for local blocking treatment and the needle knife therapy through investigating features and classification of the bony styloid process of radius.Methods The morphology of adult styloid process of radius was studied on 61 specimens.The sulcus and the bony ridges on styloid process of radius were observed.The distance from processus of the palmar bony ridge to the processus of the posterior bony ridge and the distance from the processus of the palmar bony ridge to the sharp point of styloid process of radius were measured and analyzed.Results In 39 specimens（63.93%）,styloid process was deep and divided into two sulcuses by a tiny bone ridge.In 17 specimens（27.88%）,styloid process was smooth without the tiny bone ridge.Bony sulcus was complanate and unconspicuous in 5 specimens（8.19%）.The palmar bony ridge was more prominent than the posterior bony ridge for all the specimens.The distance was about 11.48±1.36mm from the processus of the palmar bony ridge to the processus of the posterior bony ridge.The vertical distance was 17.00±2.02mm from the processus of the palmar bony ridge to the sharp point of styloid process of radius.Conclusions The processus of the palmar bony ridge was the most prominent part on styloid process of radius,which can be regarded as a positioning mark during the clinical operation.