Kumar versus Olsen cannulation technique for intraoperative cholangiography: a randomized trial.

Background: There is resistance to routine intraoperative cholangiography (IOC) during cholecystectomy because it prolongs surgery and may be experienced as cumbersome. An alternative instrument may help to reduce these drawbacks and lower the threshold for IOC. This trial compared the Kumar cannulation technique to the more commonly used Olsen clamp for IOC (KOALA trial; Dutch Trial Register NTR2582).

Paediatric hip fractures: a systematic review of incidence, treatment options and complications.

Hip fractures in children are rare; when not properly treated, they can be disastrous for the growing child. We present the incidence, causes, treatment options and possible complications. A good understanding of classification and treatment options is of great importance to minimize complications.