[Objective]To introduce the surgical method and preliminary clinical results of arthroscopic fixation of tibial intercondylar spine fractures without involving the epiphyseal plate in children.[Methods]As the anteromedial(AM)and anterolateral(AL)portals were made,the arthroscope and instruments were placed to debride the blocking synovium and the blood clot in the fracture fragments.Suture hooks were passed across the lower insertion of the anterior cruciate ligament,with a PDS suture introduced,followed by a high-strength su-ture introduced,and then the high-strength suture was led out of AM.The fracture fragments were reduced by traction.As optimal location for outer row anchors was determined at the anteromedial epiphysis of the proximal tibia,a 2.0 mm Kirschner wire was drilled,with the posi-tion confirmed by fluoroscopy.A 0.3 cm incision was made at the entry point of the Kirschner wire,and then the positioning Kirschner wire was removed.The high-strength suture was transferred out the incision,and fixed in proper fracture reduction with a outer row anchor with-out involving the epiphyseal plate.The reduction of the fracture and the tightness of the anterior cruciate ligament were examined again.[Results]All patients successfully completed the operation,with the average operation time of(59.4±1.7)min,the average intraoperative blood loss of(44.2±2.0)ml.The postoperative X-ray showed that the fracture reduction was satisfactory in all the patients.Compared with those preoperatively,Lysholm scores[(34.6±7.9),(94.4±3.5),P＜0.001],IKDC scores[(32.3±8.7),(93.2±4.5),P＜0.001]increased signifi-cantly at the latest follow-up lasted for a mean of(23.4±10.7)months.[Conclusion]This technique is a minimally invasive,safe and effec-tive for fresh tibial intercondylar spine fractures in children.The outer row anchor fixation is reliable to avoid injury of epiphyseal plate,per-mits early functional exercise.
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