Green-Bone Fracture
Definition
A fracture in bone that still has organic content: characterised by spiral or helical lines, smooth curved edges, and often some elastic deformation visible as a hinge or butterfly fragment.
- Bone state
- Still contains organic content
- Fracture lines
- Spiral or helical
- Edge appearance
- Smooth, curved
- Other sign
- Elastic hinge or butterfly fragment
Common questions
How does a green-bone fracture differ from a dry-bone fracture caused after skeletonisation?+
Green bone still has collagen and moisture that let it bend before breaking, producing smooth curved spiral edges and sometimes a hinge that stays attached, whereas dry bone has lost that elasticity and breaks with sharp, jagged, right-angled edges more like a piece of chalk snapping.
Can a green-bone fracture pattern alone confirm the injury was perimortem?+
Not by itself. Green-bone characteristics indicate the bone had organic content and moisture at the time of fracture, which is consistent with perimortem trauma, but soft tissue and moisture can persist for some time after death, so the finding must be weighed alongside other scene and pathology evidence to fix timing precisely.
Related terms
- Peri-Mortem
- At or around the time of death, when bone retains sufficient collagen to fracture in a ductile, green-bone manner. The precise biological...
- Periosteal Reaction
- New bone formation on the outer cortex in response to infection, trauma, or inflammation during life. When present around a fracture site,...
- Post-Mortem
- After death, once the organic matrix has significantly degraded. Post-mortem fractures show dry-bone morphology: transverse, angular, and without spiral curvature.
- Root Etching
- Channels and furrows on bone cortex produced by plant root acids and microbial activity concentrated along the root-bone contact zone. A major...
- Soil Loading
- Fracture of bone by the compressive weight and shifting of overlying sediment over time. Produces fractures at structurally weak points, often with...