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The Journal of Bone and Joint Surgery, Vol 72, Issue 10 1523-1526, Copyright © 1990 by Journal of Bone and Joint Surgery, Inc

JOURNAL CONTENTS

Shielding of the patient's gonads during intramedullary interlocking femoral nailing

LM Kwong, PH Johanson, DM Zinar, MR Lenihan and MW Herman
Division of Orthopaedic Surgery, Harbor/University of California, Los Angeles Medical Center, Torrance 90509.

Levels of exposure to radiation were recorded at sixty sites in fifteen patients during intramedullary interlocking femoral nailing. Radiation film dosimeters were placed at four gonadal sites on each subject. A standard male-gonad cup or a pelvic drape of 0.5-millimeter-thick lead-equivalent was put in place to shield the gonads. A second set of four dosimeters was placed external to the shield to approximate unprotected exposure. The total duration of the fluoroscopy averaged five minutes (range, thirty seconds to fourteen minutes). The total exposure to radiation external to the shield was 35 +/- 34 millirems at the male gonadal sites and 17 +/- 11 millirems at the female gonadal sites. With use of the gonadal shield, exposure to radiation was not measurable in thirteen of the fifteen patients. The differences between the exposures of the shielded and unshielded sites to radiation were statistically significant (p less than 0.001). The highest level of gonadal exposure was found with the treatment of proximal femoral fractures and with the use of statically locked nails. Regardless of the conditions, and for all types of fractures and locations, our results demonstrated that gonadal shielding is justified.
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