Short-Term Efficacy of Lars Artificial Ligament Reconstruction for Spontaneous Quadriceps Tendon and Contralateral Patellar Tendon Rupture in a Chronic Hemodialysis Patient: A Case Report

Background: Spontaneous rupture of the quadriceps and patellar tendons is a very rare injury that usually occurs in middle-aged to elderly patients. It’s often associated with chronic metabolic disorders, such as diabetes, hyperparathyroidism, gout, chronic renal failure, or long-term steroid use. Case Presentation: This article describes a 43-year-old man who has been on hemodialysis for 8 years due to uremia. The patient occurred pain without an obvious cause in both knees, difficulty in walking and limited extension of both knees for more than 4 months, and aggravation for more than 1 month. Conservative treatment for him was not valid. The rupture of the quadriceps tendon and the patellar tendon was confirmed according to the patient’s clinical symptoms and Magnetic Resonance Imaging (MRI). We used Ligament Advanced Reinforcement System (LARS) artificial ligament to reconstruct the patellar tendon and quadriceps tendon. The tendon and knee joint function recovered well after surgery. No infection or tendon rupture was found during follow-up. Conclusion: We report a case of the femoral quadriceps tendon and contralateral patellar tendon rupture during long-term hemodialysis. After the failure of conservative treatment, LARS artificial ligaments were used to reconstruct the ruptured tendon, and good results were obtained.