Objective: To explore the effect of suture anchor combined with transverse drilling of patella to repair the fracture of the joint of bone and tendon of quadriceps femoris tendon.
Methods: From April 2016 to January 2018, 6 patients (8 knees) with complete rupture of the joint of the tendon and bone tendon of the quadriceps femoris were treated with the combination of anchor with wire and transverse drilling of the patella, including 5 males (7 knees) and 1 female, aged from 43 to 74 years with an average age of 53 years old. All the patients had pain in knee joint and could not extend the knee actively after trauma. X-ray, CT and MRI were performed on the knee joints, and it was clear that the joint of bone and tendon of quadriceps femoris tendon was completely broken. The X-ray of knee joint was reviewed regularly after operation, and Lysholm score was used to evaluate the function of knee joint.
Results: The average operation time of all patients was 60 minutes. Tourniquets were used during the operation, no drainage was placed after the operation, and no blood transfusion was performed in all patients. Six patients were followed up for 15 to 36 months with an average of 26 months. Lysholm score of 6 patients (8 knees) was 79 to 95 in the last follow-up with an average of 89 points. One of the patients with mandatory spondylitis developed infection and healed after 2 debridements.
Conclusion: The suture structure of the joint of bone and tendon of quadriceps femoris tendon repaired with suture anchor and lateral drilling of patella is simple, reliable and effective.
Keywords: Patella drilling technique; Quadriceps muscle; Suture anchor; Tendon rupture.