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Open Access Research

Operative versus conservative treatment for patellar dislocation: a meta-analysis of 7 randomized controlled trials

Biao Cheng1*, Xing Wu1, Heng’an Ge12, Ye qing Sun1 and Qiang Zhang12

Author Affiliations

1 Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Yanchang Middle Road, Shanghai 200072, China

2 First Clinical Medical College, Nanjing Medical University, Nanjing, China

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Diagnostic Pathology 2014, 9:60  doi:10.1186/1746-1596-9-60

Published: 18 March 2014

Abstract

Purpose

Patellofemoral pathology is common, and patellofemoral dislocation mainly affects adolescents and young adults. We conducted a meta-analysis exclusively of RCTs to compare the clinical outcomes of patellar dislocation patients managed operatively versus non-operatively.

Methods

After systematic review of electronic databases and websites, a total of 7 RCTs reporting data on 402 subjects were included. The methodological quality of the literature was assessed using the PEDro critical appraisal tool. Mean differences (MDs) and risk ratio (RR) were calculated for the pooled effects. Heterogeneity was assessed using the I2 test.

Results

Data synthesis showed a lower rate of recurrent patellar dislocation post-treatment in patients managed operatively compared to non-operatively (P = 0.01).

Conclusion

The results suggest a difference in outcomes between the treatment strategies. However the limited number of studies and high risk of inherent bias indicate that future studies involving more patients in better-designed randomized controlled trials will be required.

Virtual slides

The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/8011948721221355 webcite.