Corridor-diameter-dependent angular tolerance for safe transiliosacral screw placement: an anatomic study of 433 pelves

McLaren, Daniel; Busel, Gennadiy; Parikh, Harsh R.; Only, Arthur J.; Patterson, Jason; Gaston, Brandon; McLemore, Ryan; Cunningham, Brian P.

doi:10.1007/s00590-021-02913-5

Cited by 4 publications

(5 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The rate of screw breach was similar between IS and TS screws, despite the lower angular tolerances of TS screws. 1,2 The rate of neurologic injury in this cohort was 3.2% (8/249) which is similar to previously published reports (0e3.2%)(Table 6). 1,3e10,20 The combined overall rate of neurologic injury from these previous studies is 1.3% (17/1,353).…”

Section: Discussionsupporting

confidence: 90%

“…Percutaneous posterior pelvic ring fixation is technically difficult, with a reported angular tolerance of only one to four degrees. 1,2 Several studies have documented the rate of iatrogenic nerve injury, misplaced screws and the revision rate of screws. 1,3e14 Despite the relatively high rate of screw breach in the published literature (range, 0e59%), the rate of reported iatrogenic neurologic injury (range, 0e3.2%) and screw revision (range, 0e9.9%) remains low.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Risk factors for screw breach and iatrogenic nerve injury in percutaneous posterior pelvic ring fixation

Hadeed

Woods²,

Koerner³

et al. 2022

Journal of Clinical Orthopaedics and Trauma

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Risk factors for screw breach and iatrogenic nerve injury in percutaneous posterior pelvic ring fixation

Hadeed

Woods²,

Koerner³

et al. 2022

Journal of Clinical Orthopaedics and Trauma

View full text Add to dashboard Cite

“…For accurate IS screw placement, more studies were done on the structure and boundary of bony in the safety area, especially the analysis of projection or image based on CT [ 11 , 20 , 21 ]. Mendel et al [ 17 ] reconstructed 3D pelvic CT of 85 adult patients. They extracted the triangle projection sacral S1 lateral edge, sacral promontory, and the leading edge of the iliosacral joint is mapped via the sacral auricular surface maximum set nail “safe passage”.…”

Section: Discussionmentioning

confidence: 99%

“…The screw path was defined as McLaren’s methods [ 17 ]. The path extended from the outer table of one posterior ilium, across the near SI joint, through the S1 sacral segment, across the contralateral SI joint, and out the outer table of the opposite ilium.…”

Section: Discussionmentioning

confidence: 99%

“…After performing the mesh control of each part, to ensure the perfect contact between the different structures, application regions of the loads onto the Z, X, and Y axes were set along of sagittal, coronal, and axial planes, respectively [ 17 ]. A 500 N load was applied to the region in the Z-axis direction [ 15 , 18 ], and no loading was applied onto the X and Y axes.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Different Lengths of Percutaneous Transverse Iliosacral Screw in Geometric Osseous Fixation Pathway: A Finite-Element Analysis

Zhang

Wang

et al. 2022

JOIO

View full text Add to dashboard Cite

Objective To evaluate the biomechanical performances of the sacroiliac screw fixation of the first sacral vertebra with different lengths of screws using the Finite-Element Method. Methods First, pelvic CT images were generated from a healthy volunteer, and multislice sagittal views were produced to determine the axis for the first sacral vertebra geometric osseous fixation pathway (GOFP). Subsequently, according to the geometric size and mechanical parameters of the iliosacral screw, the screw models with the same diameter of 7.3 mm and different lengths of 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm and 140 mm were built. Then the seven screws were assembled with the pelvic model. The maximum von Mises stress and the shape variables were evaluated for the pelvis and the screws. Results Results are shown for the pelvic and GOFP screw, respectively. The simulation results show that the maximum von Mises stress in the cortex of the pelvic ring of the pelvis with the 130-mm length screw is the lowest among the pelvic models with different screws. Moreover, the peak displacement of the pelvis with the 130-mm length screw is the smallest. These results indicate that under the standing condition, a 130-mm length screw can decrease the stress concentration and result in a more effective transfer of stress within the reconstructed pelvis. In addition, the displacement of the screw with a 130-mm length is the smallest among all the considered screws. The peak von Mises stresses in the 130-mm length screw and the cortex are still within a low and elastic range below the yielding strengths of the materials. Conclusion Through the finite element analysis, the GOFP can be used as a safe and effective way for iliosacral screw fixation. The optimal length of the screw may be 130 mm length.

show abstract

Iliac dysmorphism: defining radiographic characteristics and association with pelvic osseous corridor size

Wang

Jacobs

Bartlett

et al. 2022

Arch Orthop Trauma Surg

View full text Add to dashboard Cite

Corridor-diameter-dependent angular tolerance for safe transiliosacral screw placement: an anatomic study of 433 pelves

Cited by 4 publications

References 43 publications

Risk factors for screw breach and iatrogenic nerve injury in percutaneous posterior pelvic ring fixation

Risk factors for screw breach and iatrogenic nerve injury in percutaneous posterior pelvic ring fixation

Different Lengths of Percutaneous Transverse Iliosacral Screw in Geometric Osseous Fixation Pathway: A Finite-Element Analysis

Iliac dysmorphism: defining radiographic characteristics and association with pelvic osseous corridor size

Contact Info

Product

Resources

About