Journal article
Comparative Study of the Orthofix and Pittsburgh Frames for External Fixation of Unstable Pelvic Ring Fractures
Journal of orthopaedic trauma, Vol.2(2), pp.130-138
1988
DOI: 10.1097/00005131-198802010-00008
PMID: 3230497
Abstract
We compared the mechanical performance of the Orthofix pelvic external fixator with that of the Pittsburgh triangular frame (PTF) on eight fresh-frozen cadaver pelves with experimentally created Malgaigne (doublevertical) fracture/dislocations. The pelves were quasi-statically loaded in longitudinal compression and loss of reduction (i.e., failure) was defined as 1.5 cm of diastasis at either of the fracture/dislocation sites. The Orthofix framepelvis complex (four 6-mm half-pins) was comparable to the PTF-pelvis complex (eight 5-mm half-pins) in terms of load to failure and overall stiffness, but was 4-7 times stiffer at lower load levels. Both frame-and-pin complexes deformed moderately at the pin-bone interface, but, while the PTF also showed moderate displacement between frame components, the Orthofix had almost no frame intercomponent motion.
Details
- Title: Subtitle
- Comparative Study of the Orthofix and Pittsburgh Frames for External Fixation of Unstable Pelvic Ring Fractures
- Creators
- Alexander Bell - Orthopaedic Biomechanics Laboratory, Department of Orthopaedic Surgery, University of Iowa Hospitals and Clinics, Iowa City, Iowa, U.S.ARichard SmithThomas BrownJames Nepola
- Resource Type
- Journal article
- Publication Details
- Journal of orthopaedic trauma, Vol.2(2), pp.130-138
- Publisher
- Lippincott-Raven Publishers
- DOI
- 10.1097/00005131-198802010-00008
- PMID
- 3230497
- ISSN
- 0890-5339
- eISSN
- 1531-2291
- Language
- English
- Date published
- 1988
- Academic Unit
- Orthopedics and Rehabilitation
- Record Identifier
- 9984040202902771
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