Abstract
BackgroundHow to perform minimally-invasive surgery on Tile C pelvic fractures is very difficult, and it is also a hot topic in orthopedic trauma research. We applied minimally-invasive treatment using an anterior internal fixator combined with sacroiliac screws.ObjectivesTo compare the biomechanical properties of different fixation models in pelvic facture specimens, using an internal fixation system or a steel plate combined with sacroiliac screws.MethodsSixteen fresh adult cadaver pelvic specimens were randomly separated into four groups named A, B, C, and D. The four groups were respectively stabilized using a two-screwed, three-screwed, or four-screwed anterior internal fixator or a steel plate with sacroiliac screws. All models were tested in both standing and sitting positions. Vertical loads of 600 N were applied increasingly. Shifts of bilateral sacroiliac joints and pubis rupture were measured.ResultsThe shifts in sacroiliac joints and pubis rupture in the standing position were all less than 3.5 mm, and the shifts in the sitting position were all less than 1 mm. In the standing position, the results of shifts in the sacroiliac joints were group C < group D < group B < group A. For comparisons between A:B and C:D, P > 0.05. For comparisons between A, B:C, and D, P < 0.05. The results of shifts in pubis ruptures were group D < group C < group B < group A. In the comparison between C:D, P > 0.05; for comparisons between A:B, A:C, A:D, B:C, and B:D, P < 0.05. In the sitting posture, the results of shifts in the sacroiliac joints were group C < group D < group B < group A, and the shifts in the pubis ruptures were group D < group C < roup B < group A. For comparison between C:D, P > 0.05. For comparisons between A:B, A:C, A:D, B:C, and B:D, P < 0.05.ConclusionUse of an anterior internal fixator combined with sacroiliac screws effectively stabilized Tile C3 pelvic fractures. The stability of specimens increased as the number of screws in the internal fixator increased.
Highlights
With the development of minimally-invasive techniques, there is increasing interest in treating pelvic fractures with these methods
Use of an anterior internal fixator combined with sacroiliac screws effectively stabilized Tile C3 pelvic fractures
We have suggested the innovative approach of applying minimally-invasive treatment to Tile C3 pelvic fractures by using an anterior internal fixator combined with sacroiliac screws
Summary
With the development of minimally-invasive techniques, there is increasing interest in treating pelvic fractures with these methods. The most common surgical technique to fix a vertically-unstable posterior pelvic ring fracture is to use sacroiliac screws for closed reduction. For the treatment of anterior pelvic ring fractures, some researchers have reported that the use of subcutaneous screws and rods for internal fixation has good efficacy. This method is known as a subcutaneous internal fixator [1, 2] or an anterior subcutaneous pelvic fixator (INFIX) [3, 4]. We have suggested the innovative approach of applying minimally-invasive treatment to Tile C3 pelvic fractures by using an anterior internal fixator combined with sacroiliac screws. We applied minimally-invasive treatment using an anterior internal fixator combined with sacroiliac screws
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