Blunt Renal Trauma: Biomechanics and Origination of Renal Lesions

Strain energy density as a rupture criterion for the kidney: impact tests on porcine organs, finite element simulation, and a baseline comparison between human and porcine tissues

“…In the current study, the impact energies associated with first rupture (2.7-4.3 J) were similar to the 4 J threshold reported by Bschleipfer et al (2002), which was based upon a measured increase in intra pelvic renal pressure. However, in this earlier study, a progressive and drastic increase in energy failure threshold was noted with increasing impact energy (achieved by increasing the impact velocity of a 1450 g impactor).…”

“…However, the limited number of tests (n=6), the large range of observed injury severity, and the variability in test data renders these results ambiguous. Bschleipfer et al (2002) investigated the brake energy capacity of perfused porcine kidneys (n=66), however, the study performed tests only up to 1 m/s. While this study offers interesting insight into the location and origin of renal ruptures, the method used to establish the initiation of organ rupture (peak force in high energy, uncontrolled compression) was indirect and a large range of injury severity was considered.…”

Analysis of the Biomechanical Response of Kidneys Under Blunt Impact

“…Kidney injury is reported in 8-10 percent of abdominal trauma cases and is mostly sustained in automotive traffic accidents (41 percent) followed by sports injury and accidents at work (both 13 percent) (Bschleipfer et al, 2002). Trauma must be severe to produce major renal injuries, as the kidney is well protected by its position lying high in the retroperitoneum with the abdominal viscera positioned anterior and the back muscles posterior.…”

Determination of urinary N-acetyl-β-D glucosaminidase (NAG) levels in experimental blunt renal trauma

“…Postmortem swine kidneys were used in other studies and biomechanics of the trauma and the final lesions were mostly emphasized. [29][30][31] No isolated blunt renal trauma model was found in the literature. Thus, a standard injury model was aimed to be obtained with a preliminary study.…”

“…Travma grubunda sol böbrek eksplore edildikten sonra 20 gr ağırlık böbrek üzerine düşürüldü. İşlem öncesi, iş-lem sonrası 0-6., 12-24., [24][25][26][27][28][29][30][31][32][33][34][35][36]. ve 36-48. saatler arasında strip ile idrar tetkiki, idrar NAG ve kreatinin (Cr) düzeyle-ri için örnekler alındı.…”