AI Article Synopsis
- Articular cartilage can help determine how long a body has been deceased by observing changes in its structure.
- Scanning electron microscopy revealed the formation of unique microcrystals on porcine cartilage after three weeks of burial, which then disappeared at six weeks.
- These crystals, potentially struvite, were linked to pH changes and bacterial activity, suggesting that analyzing articular cartilage might aid in forensic investigations.
Article Abstract
Articular cartilage was examined to determine its decomposition sequence and its potential for assessing the postmortem interval. Scanning electron microscopy of articular cartilage from buried porcine trotters showed the presence of microcrystals on the synovial surface. These orthorhombic pyramidal or "coffin"-shaped crystals, appeared at 3 weeks (22 days) after interment and disappeared after 6 weeks. The disappearance of these crystals was linked to decompositional changes to the integrity of the synovial joint. The formation and disappearance of these crystals was associated with a pH change at the cartilage surface. Scanning electron microscopy-energy-dispersive X-ray (SEM-EDX) analysis showed that the five main elements contained within these crystals were carbon, nitrogen, oxygen, magnesium, and phosphorous. Such elemental analysis suggested the crystals may be struvite (MgNH4 PO4 6(H2 O)). Bacteria cultured from the cartilage synovial surface produced struvite crystals when grown in suitable media and were identified by DNA analysis to be Comamonas sp.
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| http://dx.doi.org/10.1111/1556-4029.12567 | DOI Listing |
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