Reduced radiation exposure in orthopaedic surgery. Experience with video disc recording in nailing of fractured hips.

Radiation exposure from conventional fluoroscopy and from video disc recording was estimated during routine nailing of hip fractures. Mean fluoroscopic time with conventional fluoroscopy was 385 +/- 168 s. and with video disc recording 24 +/- 9 s. The time required for the X-ray system to form one television image, as well as the actual radiation exposure, were measured on a phantom under conditions that simulated hip nailing. Radiation exposure was 90% less with video disc recording than with conventional fluoroscopy. The use of a video disc recorder in orthopaedic operations requiring radiographic control is strongly advocated.