目的 观察第一跖趾关节(MTP1)囊韧带复合体的微细解剖结构，并在此基础上进行三维（3D）数字化重建，以期为外翻的临床诊断、手术规划及治疗提供直观、立体的形态学依据。方法 选用4% 甲醛固定的成人足部标本6例，采用由浅入深、逐层解剖的方法，利用显微器械进行微细剥离，完整保留关节囊、侧副韧带系统、跖板、跖骨深横韧带及周围肌腱的形态、附着点及其毗邻关系。基于解剖所得空间数据，利用三维模型构建软件Blender 4.5对骨骼及10条主要韧带进行高精度数字化重建，并通过差异化渲染实现结构可视化。结果 成功制作了第一跖趾关节周围囊韧带复合体的微细解剖标本，清晰显示了各结构的形态、走行及空间位置关系，制作出MTP1周围10条主要韧带的多视角三维解剖图像，通过视觉增强技术清晰显示了每条韧带的结构特征及空间位置关系，重建了MTP1这一微观、复杂的韧带系统的3D数字图像。结论 本研究制作的囊韧带复合体的微细解剖标本为外翻的诊断与治疗提供了解剖学依据，构建的3D数字化模型不仅深化了对该复合体立体空间结构的理解，而且加强了其推广性，更具备了向3D打印及手术模拟转化的潜力。

Objective To conduct a detailed anatomical investigation of the first metatarsophalangeal joint (MTP1) capsule-ligament complex and perform three-dimensional(3D) digital reconstruction based on these findings, providing intuitive and stereoscopic morphological evidence for the clinical diagnosis, surgical planning, and treatment of hallux valgus. Methods Six adult foot specimens fixed in 4% formaldehyde were selected. A step-by-step dissection method from superficial to deep layers was employed, using microsurgical instruments for meticulous separation. The morphology, attachment points, and adjacent relationships of the joint capsule, collateral ligament system, plantar plate, deep transverse metatarsal ligament, and surrounding tendons were preserved intact. Based on the spatial data obtained from the dissection, a high-precision digital reconstruction of the bones and 10 major ligaments was performed using 3D modeling software (Blender 4.5), achieving structural visualization through differential rendering. Results A microanatomical specimen of the capsule ligament complex around MTP1 was successfully produced, which clearly displayed the morphology, course, and spatial position relationship of each structure. Multi view three-dimensional anatomical images of the 10 main ligaments around MTP1 were produced, and the structural characteristics and spatial position relationship of each ligament were clearly displayed through visual enhancement technology. A 3D digital image of the microscopic and complex ligament system of MTP1 was reconstructed. Conclusion The microanatomical specimens of the capsule ligament complex produced in this study provide anatomical basis for the diagnosis and treatment of eversion. The constructed 3D digital model not only deepens the understanding of the three-dimensional spatial structure of the complex, but also enhances its generalizability and has the potential to be transformed into 3D printing and surgical simulation.