Alonso B, Sobrón F B, Vidal C, Vaquero J
Servicio de Cirugía Ortopédica y Traumatología, Hospital General Universitario Gregorio Marañón, Madrid, España.
Cirugía Ortopédica y Traumatología, Hospital Infanta Cristina, Madrid, España.
Acta Ortop Mex. 2016 May-Jun;30(3):150-153.
We report the case of a patient who presented a pretibial extra-articular cyst two years after an arthroscopically assisted ACL reconstruction using an autologous bone-patellar tendon-bone graft. The tibial fixation was achieved with a bioabsorbable screw made of poly-L, D-lactic and -tricalcium phosphate (-TCP). A subcutaneous pseudocystic lesion was excised. It consisted of a capsular fibrous tissue with minimal milky fluid (1 ml) centrally. It penetrated into the tibial tunnel but did not communicate with the knee joint space. The histopathological analysis demonstrated fibrous tissue with multinucleated giant cells and refractile particles which suggested a foreign body reaction. After the surgery, the patient recovered perfectly well and he returned to his pre-injury level of physical activity in two months. To the best of our knowledge, this is the first report of this complication in a patient with a biocomposite screw made of poly-L, D-lactic and -tricalcium phosphate (-TCP).
我们报告了一例患者的病例，该患者在采用自体骨-髌腱-骨移植进行关节镜辅助下前交叉韧带重建术后两年出现胫前关节外囊肿。胫骨固定采用由聚-L，D-乳酸和磷酸三钙（-TCP）制成的生物可吸收螺钉。切除了一个皮下假性囊肿病变。它由中央有少量乳状液（1毫升）的包膜纤维组织组成。它穿透进入胫骨隧道，但未与膝关节腔相通。组织病理学分析显示为有多核巨细胞和折光性颗粒的纤维组织，提示异物反应。手术后，患者恢复良好，两个月后恢复到受伤前的身体活动水平。据我们所知，这是首例使用由聚-L，D-乳酸和磷酸三钙（-TCP）制成的生物复合材料螺钉的患者出现这种并发症的报告。
