Orthopedic Trauma, University of Chinese Academy of Sciences Shenzhen Hospital, Guangdong, Shenzhen, People's Republic of China.
The Third Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong, People's Republic of China.
J Orthop Surg Res. 2021 Mar 27;16(1):225. doi: 10.1186/s13018-021-02348-y.
How 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.
To 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.
Sixteen 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.
The 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.
Use 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.
如何对 Tile C 型骨盆骨折进行微创治疗是非常困难的，这也是骨科创伤研究的热点。我们应用前路内置物结合骶髂螺钉微创治疗。
比较骨盆骨折标本中不同固定模型的生物力学特性，采用内置物系统或钢板结合骶髂螺钉。
将 16 具新鲜成人尸体骨盆标本随机分为 A、B、C、D 四组，分别采用双螺钉、三螺钉、四螺钉前路内置物或钢板结合骶髂螺钉固定。所有模型均在站立位和坐位进行测试。逐渐施加 600N 的垂直载荷。测量双侧骶髂关节和耻骨联合的移位及耻骨联合断裂。
站立位时骶髂关节和耻骨联合的移位均小于 3.5mm，坐位时均小于 1mm。站立位时，骶髂关节的移位结果为 C 组<D 组<B 组<A 组。A 组与 B 组、C 组与 D 组比较，P>0.05。A 组、B:C 组、D 组比较，P<0.05。耻骨联合断裂的移位结果为 D 组<C 组<B 组<A 组。C 组与 D 组比较，P>0.05；A 组与 B 组、A 组与 C 组、A 组与 D 组、B 组与 C 组、B 组与 D 组比较，P<0.05。坐位时，骶髂关节的移位结果为 C 组<D 组<B 组<A 组，耻骨联合的断裂的移位结果为 D 组<C 组<B 组<A 组。C 组与 D 组比较，P>0.05；A 组与 B 组、A 组与 C 组、A 组与 D 组、B 组与 C 组、B 组与 D 组比较，P<0.05。
前路内置物结合骶髂螺钉有效固定 Tile C3 型骨盆骨折，内置物中螺钉数量的增加可提高标本的稳定性。
