Summary

In order to eliminate the turbulence of the Bernoulli effect in shoulder arthroscopy, we used the dual-cannulas inflow.

Abstract

Purpose

The purpose of this study was to perform a clinical application of the dual-cannulas inflow in shoulder arthroscopy, as well as the security, clinical results, the control of bleeding and the operative view clarity.

Methods

6 patients from 2015.5 to 2015.6 with shoulder disease were selected as experimental group. All the cases were performed with shoulder arthroscopy, in which we used the dual-cannulas inflow in order to decrease the turbulence. The Hardegger function standard was used to evaluate the ability of shoulder motion and function pre-operation and post-operation. The time of the operative view clarity, the time of heamostasis, volume of drain were recorded. The effect of the dual-cannulas inflow can be calculated by “clarity time/(clarity time + heamostasis time)”.

Results

All cases finished the arthroscopy successfully. The mean operative time was 75 minutes (range, 40~120). Hardegger scores were improved from 3 cases better and 3 cases poor preoperatively to 2 cases excellent, 3 cases good and 1 better postoperatively. The mean volume of drain was 38ml (range, 20~60ml) within 24 hours after the surgery, which showed no significant difference in traditional single cannula inflow. However, the mean ratio of clarity time to the total time was 92.1%(range, 89%~94%) and can improve the effects of the operative view clarity.

Conclusion

The dual-cannulas inflow was very safe and simple, especially can eliminate the turbulence of the Bernoulli effect. This method, with low swelling, is simple and effective rehabilitation for shoulder arthroscopy.