Prognostic precision in postoperative 99mTc-MDP scintimetry after femoral neck fracture.
A 2-year follow-up regarding healing complications, such as redisplacement, nonunion, and segmental collapse of the femoral head, was performed in 306 patients operated on for femoral neck fracture and examined with 99mTechnetium-MDP scintimetry within 2 weeks postoperatively. Scintimetric evaluation was performed by selecting regions of interest over the femoral head on the fracture side and the intact side and by comparing the uptake. A femoral head ratio fractured/intact side thus was obtained. Of 199 patients with an intact femoral head uptake (ratio greater than or equal to 1.0), 181 showed no signs of healing complications at 2 years, whereas 18 had developed healing complications. Of 107 cases with a deficient femoral-head uptake (ratio less than 1.0), 96 had developed healing complications within 2 years from the operation, while 11 cases had no signs of radiographic complications. We conclude that 99mTc-MDP scintimetry performed within 2 weeks from femoral neck fracture can predict the outcome of the healing course with a prognostic accuracy of 91 per cent.
Department of Orthopedics, University Hospital, Lund, Sweden.
B
B
Strömqvist
L I
LI
Hansson
L T
LT
Nilsson
K G
KG
Thorngren
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D005265:Femoral Neck Fractures / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011877:Radionuclide Imaging; D013669:Technetium Tc 99m Medronate; D014945:Wound Healing
D013669:Technetium Tc 99m Medronate