Fig. 6From: Application of the Chinese Aircraft-shaped Sleeve system in the treatment of tibial shaft fractures using a suprapatellar approach for tibial intramedullary nailing: a randomised controlled trialComparison of surgical times: a Surgical time until entry reaming commencement. b Irrigation time. Overall, use of the CASS system shortens the surgical time. CASS: Chinese Aircraft-shaped Sleeve system, *P < 0.0001Back to article page