“…As demonstrated by Weston,9 it is possible to obtain satisfactory images of periarticular structures by using fine grain radiographic film, but the technique requires a low kilovoltage x-ray tube and special facilities for developing the film. 15 In addition the exposure factors have to be precisely chosen because of the reduced film latitude. On conventionally exposed radiographs the suprapatellar pouch was so variably shown that measurement of its size was not practical in a previous study (Renton, personal communication).…”