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| Therapeutic Effect of arthroscopic Patellar Medial Patellofemoral Ligament Reconstruction Method Combined with Lateral Retinacular Release in the Treatment of Recurrent Patellar Dislocation |
| GUO Zheng-zhong, WANG Meng-fei, ZHANG Ning, et al |
| Department of Orthopaedics, the General Hospital of Jizhong Energy FengFeng Group, Handan 056200 |
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Abstract 【Objective】To investigate the clinical effect of patellar medial patellofemoral ligament reconstruction method combined with lateral retinacular release in the treatment of recurrent patellar dislocation.【Methods】From August 2014 to August 2016, 16 cases of recurrent patellar dislocation were treated by arthroscopic medial patellar ligament reconstruction and lateral retinaculum release. Autologous free semitendinosus tendon was used as graft, the tendon was minimally invasive through the patellar bone canal, and the tension was dynamically adjusted under the arthroscope. The facial screws were fixed to the femoral canal. The follow-up subjects included the patellar extrapolation experiment and the fear experiment, the VAS score, and the evaluation of the congruence angle (CA), patella tilt angle (PTA) and patellar displacement rate (LPD) through the imaging examination. The knee joint function was evaluated by the Lysholmr score of the knee joint.【Results】Follow-up was achieved in 16 patients with a follow-up rate of 100 %. The post-operative pain score was significantly better than before surgery, and the location of the patient ' s patella was assessed by radiographic examination : the postoperative congruence angle (CA), patella tilt angle (PTA) and patellar displacement rate (LPD) were significantly improved compared to preoperative, and the anatomical location of the patella was reconstructed. 3 months after operation: all the patients were satisfied with the treatment, no redislocation cases, the patella extrapolation and fear test were all negative, only 3 patients had the knee joint pain and discomfort after the knee joint hyperactivity. At the last follow-up, the range of knee joint motion was satisfactory, but the extra patellar extrapolation and fear test were negative.【Conclusion】Arthroscopic medial patellofemoral ligament reconstruction and lateral retinaculum release can effectively treat recurrent patellar dislocation, reconstruct patella stability and improve clinical symptoms.
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Received: 16 March 2018
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2018, Vol. 35 
