[Treatment of acute patellar dislocation with arthroscopic medial retinaculum plication in adolescents].

Abstract

OBJECTIVE:

To investigate the effectiveness of arthroscopic medial retinaculum plication (MRP) for acute patellar dislocation (APD) in adolescents.

METHODS:

Between March 2007 and June 2011, 24 adolescent patients suffering from APD were treated by arthroscopic MRP. There were 14 males and 10 females, aged 8-18 years (mean, 12.7 years). The location was the left knee in 16 cases and the right knee in 8 cases. Injury was caused by sports in 19 cases, by traffic accident in 4 cases, and by heavy bruising in 1 case. The duration from injury to operation was 3 to 21 days with an average of 7.8 days. The results of floating patella test and dislocation apprehension test were both positive. MRI examination showed the arthroedema in all cases; associated injuries included medial retinaculum injury in 20 cases, medial patellar injury in 8 cases, and meniscus tear in 5 cases.

RESULTS:

All incisions healed by first intention without complication of infection or neurovascular injury. All the patients were followed up 12-36 months (mean, 14.6 months). Only 2 patients suffered from patellar re-dislocation at 4 months and 6 months after operation respectively. The knee joint activity returned to normal at 12 months. The Lysholm, Kujala, and International Knee Documentation Committee (IKDC) scores at 3 and 12 months after operation were significantly higher than those before operation (P < 0.05), and the scores at 12 months were significantly higher than those at 3 months (P < 0.05).

CONCLUSION:

Treatment of APD with arthroscopic MRP has the advantages of minor trauma and good knee functional improvement. The technique can decrease incidence of patellar re-dislocation in adolescent.

• Authors: Bo Zhao, Xia Ran, Minghua Zhang, Chao He, Dianming Jiang
• Journal: Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery (Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi) Vol. 27 Issue 12 Pg. 1437-41 (Dec 2013) ISSN: 1002-1892 [Print] China
• PMID: 24640360 (Publication Type: Journal Article)

Topics

• Adolescent
• Arthroscopy (methods)
• Child
• Female
• Humans
• Knee Injuries (diagnostic imaging, etiology, surgery)
• Magnetic Resonance Imaging
• Male
• Patella (diagnostic imaging, surgery)
• Patellar Dislocation (diagnostic imaging, etiology, surgery)
• Patellar Ligament (diagnostic imaging, injuries, surgery)
• Radiography
• Range of Motion, Articular
• Retrospective Studies
• Treatment Outcome