目的:在法医学中,浸渍对于检查骨表面通常是必不可少的,用于识别切割标记等目的,进行几何测量,并确定受害者的年龄。虽然热水浸渍有效去除软组织,已知会导致骨表面收缩。这就提出了一个问题,即这种影响是永久性的,还是可以通过复水部分逆转,考虑到软组织的存在。
方法:对20对人体前臂解剖标本的半径进行计算机断层扫描(CT)扫描。随后,提取了半径,浸渍在60°C的水中,在空气环境中进行CT扫描,再水合,重新植入前臂,并再次进行CT扫描。
结果:浸渍导致外骨表面平均收缩0.12mm。补液后,骨干的这种收缩几乎可以完全恢复,并考虑到骨骼周围的软组织。相比之下,骨phy表现出永久性收缩,可能是由于小骨头碎片的丢失。对内骨表面的分析表明影响较小,但是有显著的标准偏差,特别是对于骨的骨,可能与内骨表面不太明确的性质有关。
结论:热水浸渍骨的骨phy表面会,平均而言,大约0.15mm的放气,并且不能保持原始表面。另一方面,骨干表面受影响较小,在补液后可以几乎完全恢复,并考虑到骨骼周围的软组织。
OBJECTIVE: In forensic medicine, maceration is often essential for examining bone surfaces, serving purposes such as identifying cut marks, making geometric measurements, and determining the victim\'s age. While hot water maceration removes soft tissue effectively, it is known to cause bone surface shrinkage. This raises the question of whether this effect is permanent or if it can be partially reversed through rehydration, considering the presence of soft tissue.
METHODS: Computed tomography (CT) scans were conducted on the radii of 20 paired human anatomic forearm specimens. Subsequently, the radii were extracted, macerated in 60 °C water, CT-scanned in an air environment, rehydrated, re-implanted into the forearms, and CT-scanned again.
RESULTS: Maceration resulted in a mean shrinkage of 0.12 mm on the outer bone surface. This shrinkage was nearly fully recoverable for the diaphysis after rehydration and accounting for soft tissue surrounding the bone. In contrast, the epiphysis showed permanent shrinkage, likely due to the loss of small bone fragments. Analysis of the inner bone surface indicated a smaller effect, but with significant standard deviations, especially for the epiphysis, possibly related to the less well-defined nature of the inner bone surface.
CONCLUSIONS: The epiphyseal surface of hot water-macerated bone will, on average, be approximately 0.15 mm deflated and cannot retain the original surface. On the other hand, the diaphyseal surface is less affected and can be nearly completely restored after rehydration and accounting for soft tissue surrounding the bone.