表面膝关节假体联合仿生垫块重建胫骨近端骨巨细胞瘤切除术后骨缺损的中期疗效

Mid-term efficacy of surface knee prosthesis combined with bionic block in joint reconstruction after resection of giant cell tumor in proximal tibia

报告共6例应用表面膝关节假体联合3D打印仿生垫块重建胫骨近端骨巨细胞瘤切除术后骨缺损患者的中期随访结果,男1例、女5例,年龄分别为50、40、68、53、35、42岁;初次手术者3例,复发后手术3例。术中行瘤段整体切除后,以表面膝关节假体联合3D打印仿生垫块填补骨缺损,并利用微孔结构及补片重建周围韧带抵止点。随访时间分别为60、90、60、60、75、50个月。随访期间局部无复发、假体周围无透光影及松动迹象。美国膝关节协会评分(American Knee Society Score,KSS)临床评分分别为87、92、85、90、95、78分;功能评分分别为70、100、70、100、100、80分。骨骼肌肉软组织肿瘤协会(Musculoskeletal Tumor Society Score,MSTS)评分分别为27、28、26、26、26、27分。表面膝关节假体联合仿生垫块可以有效填补胫骨近端骨巨细胞瘤切除后的骨缺损,实现膝关节的解剖及功能重建。

A total of 6 patients were treated with surface knee joint prosthesis combined with 3D-printed customized bionic tibial block for reconstruction of bone defect after giant cell tumor(GCT)in proximal tibia(1 male and 5 females,aged 50,40,68,53,35,42,respectively).3 patients with primary and 3 patients with recurrence of GCT.After resection of the tumor,the bone defect was filled with 3D-printed block combined with surface knee prosthesis,the surrounding ligaments were reconstructed with microporous structure and artificial mesh.All cases were followed up for 60,90,60,60,75,and 50 months,respectively.During the follow-up,there was no local recurrence,no radiolucent lines around prosthesis,and no signs of loosening.The clinical scores of the American Knee Society Score(KSS)were 87,92,85,90,95 and 78.The functional scores were 70,100,70,100,100 and 80 respectively.Musculoskeletal Tumor Society Score(MSTS)were 27,28,26,26,26,27,respectively.Surface knee prosthesis combined with bionic block can effectively fill the bone defect after resection of GCT in proximal tibia,achieve anatomical and functional reconstruction of knee joint.