[Objective]To present the surgical technique and preliminary clinical outcomes of double shallow patellar tunnels and su-ture loops fixation for medial patellofemoral ligament reconstruction.[Methods]From January 2021 to January 2022,30 patients with patel-lar dislocation were treated with abovementioned MPFL reconstruction.After location on the medial edge of the patella,two guide pins with tail holes were transversely drilled into the opposite side.Two shallow tunnels 5mm in depth were created by a cannulated drill 4.5 in diam-eter over the guide pins.Use a guide pin with a tail hole,leading PDS suture was introduce into each bone tunnel.Then,using the leading PDS,two suture loops was induced into both bone tunnels.As the tendon graft was placed into two suture loops,the suture ends were tight-ened simultaneously to fit tendon graft into the shallow tunnels and fixed with knots.The tendon graft was led under the deep fascia to the femoral incision,the femoral tunnel was made,the graft was introduced,and an interference screw was inserted to fix the reconstructed MP-FL in appropriate tension.[Results]All the patients had MPFL reconstructed successfully without serious complications,and were followed up for 12 to 24 months.Compared with those preoperatively,knee range of motion(ROM)[(63.3±18.2)°,(121.4±4.7)°,P＜0.001],VAS score[(6.4±0.9),(1.9±0.5),P＜0.001],IKDC scores[(38.2±6.5),(79.9±5.3),P＜0.001],patellar tilt[(23.7±4.2)°,(12.1±3.2)°,P＜0.001]and patel-lar congruency angle[(18.9±3.1)°,(-5.5±1.3)°,P＜0.001]are improved significantly at the last follow-up.[Conclusion]Reconstruction of medial patellofemoral ligament with double shallow tunnels and double suture loops fixation did reduce iatrogenic trauma and achieve good clinical consequences for patella dislocation or subluxation.
patellar dislocation or subluxationmedial patellofemoral ligament reconstructionshallow tunneldouble suture loops
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