Abstract | BACKGROUND: METHODS: Colles fractures (AO pattern, C2.1) were produced in ten pairs of fresh-frozen human cadaveric radii. One radius from each pair was randomly chosen for stabilization with SRS bone cement. These ten radii were treated with open incision, impaction of loose cancellous bone with use of a Freer elevator, and placement of the SRS bone cement by injection. In the ten control specimens, the fracture was stabilized with use of two horizontal and two oblique Kirschner wires. The specimens were cyclically loaded to a peak load of 200 newtons for 2000 cycles to evaluate the amount of settling, or radial shortening, under conditions simulating postoperative loading with the limb in a cast. Each specimen then was loaded to failure to determine its ultimate strength. RESULTS: The amount of radial shortening was highly variable among the specimens, but it was consistently higher in the Kirschner-wire constructs than in the bone fixed with SRS bone cement within each pair of radii. The range of shortening for all twenty specimens was 0.18 to 4.51 millimeters. The average amount of shortening in the SRS constructs was 50 percent of that in the Kirschner-wire constructs (0.51+/-0.34 compared with 1.01+/-1.23 millimeters; p = 0.015). With the numbers available, no significant difference in ultimate strength was detected between the two fixation groups. CONCLUSIONS:
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Authors | D N Yetkinler, A L Ladd, R D Poser, B R Constantz, D Carter |
Journal | The Journal of bone and joint surgery. American volume
(J Bone Joint Surg Am)
Vol. 81
Issue 3
Pg. 391-9
(Mar 1999)
ISSN: 0021-9355 [Print] United States |
PMID | 10199278
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Bone Cements
- Calcium Phosphates
- alpha-tricalcium phosphate
- tetracalcium phosphate
- calcium phosphate, monobasic, anhydrous
- calcium phosphate
- calcium phosphate, dibasic, anhydrous
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Topics |
- Biomechanical Phenomena
- Bone Cements
- Bone Wires
- Calcium Phosphates
(administration & dosage)
- Cementation
- Colles' Fracture
(physiopathology, surgery)
- Fracture Fixation, Internal
(methods)
- Humans
- In Vitro Techniques
- Injections
- Random Allocation
- Stress, Mechanical
- Wrist Joint
(physiopathology)
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