A prospective evaluation of X-ray pelvimetry.

One hundred four consecutive patients undergoing x-ray pelvimetry were analyzed prospectively in an attempt to evaluate the efficacy of this procedure. Comparison was made between prepelvimetry and post-pelvimetry clinical management plans. Roentgenographic pelvic measurements led to prompt and significant alterations in clinical management plans in only one of 67 patients with vertex presentation and one of 37 with breech presentation. In 98% of patients, no change in immediate clinical management plan was made on the basis of x-ray pelvimetry findings.