pyrophosphate and Radius-Fractures

The effect of electric stimulation with direct constant current in induced pseudarthrosis was investigated in the radius of adult dogs. Two surgical techniques for inducing nonunion in the lower third of the radius of adult dogs are also described. Results were evaluated by clinical, radiologic, and histologic examinations and by 99mTc scintillation. A total of 57 animals (41 electrically stimulated and 16 control animals) was used. Statistically significant data show activation of endochrondral ossification and bone union by electric stimulation.

Topics: Animals; Diphosphates; Dogs; Electric Stimulation Therapy; Fractures, Ununited; Microscopy, Electron; Osteogenesis; Pseudarthrosis; Radius Fractures; Technetium; Technetium Tc 99m Pyrophosphate; Wound Healing

The potential role of bone scanning in the early detection of occult fractures following acute trauma was investigated. Technetium 99m pyrophosphate bone scans were obtained in patients with major clinical findings (e.g., pain, swelling, tenderness) and negative or equivocal roentgenograms following trauma. Bone scanning facilitated the prompt diagnosis of occult fractures in the hip, knee, wrist, ribs and costochondral junctions, sternum, vertebrae, sacrum, and coccyx. Several illustrative cases are presented. Roentgenographic confirmation occurred following a delay of days to weeks and, in some instances, the roentgenographic findings were subtle and could be easily overlooked. This study demonstrates bone scanning to be invaluable and definitive in the prompt detection of occult fractures.

Topics: Acetabulum; Aged; Bone and Bones; Coccyx; Diphosphates; Female; Fractures, Bone; Fractures, Closed; Humans; Radiography; Radionuclide Imaging; Radius Fractures; Sacrum; Sternum; Technetium; Technetium Tc 99m Pyrophosphate; Wounds and Injuries; Wrist Injuries

Topics: Bone Cysts; Calcium Pyrophosphate; Chondrocalcinosis; Diphosphates; Fractures, Spontaneous; Humans; Male; Middle Aged; Radiography; Radius Fractures