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目的观测桡骨茎突部软组织结构的特点及变异,为临床局部封闭、针刀等治疗提供解剖学依据。方法对30例成人腕关节防腐固定标本的第1骨性纤维鞘管长度、上下口直径,及其与桡动脉、桡神经浅支间的宽度进行测量,并对纤维间隔和拇长展肌副腱进行了观测。结果单隔间63.3%(19例),表现为拇长展肌(APL)肌腱与拇短伸肌(EPB)肌腱通过同一个纤维鞘管,中间无纤维间隔;双隔间36.7%(11例),表现为纤维鞘管中存在纤维间隔将APL与EPB肌腱隔开。APL副腱70%(21例),表现为APL存在1～4条副腱。纤维鞘管的长度、下口内、外径及上口内、外径分别为(35.35±3.04)mm(、9.36±0.38)mm(、11.08±0.36)mm、(13.15±0.87)mm和(13.67±0.82)mm。纤维鞘管与桡动脉、桡神经浅支间的距离分别为(1.60±0.17)～(4.58±0.45)mm(、1.42±0.18)～(4.59±0.45)mm。结论第1骨性纤维鞘管可作为安全和有效的治疗部位。
Objective To observe the characteristics and variations of soft tissue structure of radial styloid process and provide anatomical basis for clinical partial closure and needle knife treatment. Methods The length of the first bony sheath, the diameter of the upper and lower jaws, and the width between the radial artery and the superficial branch of the radial nerve were measured in 30 adult patients with preserved wrist anastomosis. Tendons were observed. Results 63.3% (19 cases) of single compartment showed that the tendon of APL tendon passed through the same fibrous sheath with no fibrosis in the middle. The double compartments had 36.7% (11 cases ), Manifested by the presence of fibrous septa in the fiber sheath separating the APL from the tendon of the EPB. APL accessory tendon 70% (21 cases), the performance of the APL there are 1 to 4 accessory tendons. The length, internal diameter, external diameter and internal diameter of the fibrous sheath were (35.35 ± 3.04) mm, (9.36 ± 0.38) mm (11.08 ± 0.36) mm, (13.15 ± 0.87) mm and (13.67 ± 0.82) mm. The distance between fibrous sheath, radial artery and superficial branch of radial nerve were (1.60 ± 0.17) ~ (4.58 ± 0.45) mm (1.42 ± 0.18) ~ (4.59 ± 0.45) mm, respectively. Conclusion The first skeletal fiber sheath can be used as a safe and effective treatment site.