Table 1.

Assessed healing parameters grouped by activity level and region

Activity level	Distal fragment	Gap	Proximal fragment
High	Cell density	Dense filled	Cell density
	Trabecular thickening	Vessels	Trabecular thickening
	Osteoid formation	Cell richness	Osteoid formation
	Trabecular spikes	Collagen type 1	Trabecular spikes
	Cell lines	Collagen type 2	Cell lines
	Blood cells/vessels		Blood cells/vessels
Partial	Few cells	Empty spaces	Few cells
	Anorganic, sclerosis	No vessels	Anorganic, sclerosis
	Intertrabecular cells	Loose connective tissue	Intertrabecular cells
	Blood cells	Synovial layer	Blood cells
	Blasts/clasts	Collagen type 1	Blasts/clasts
	Necrosis	Collagen type 2	Necrosis
	Cartilage formation	Cartilage formation	Cartilage formation
Little	Giant cells, cysts	Giant cells, cysts	Giant cells, cysts
	Spotty activity	Spotty activity	Spotty activity
	Sclerosis seal	Sclerosis seal	Sclerosis seal
	Dense sclerotic area	Dense sclerotic area	Dense sclerotic area
	Foamy calcite deposit	Cartilage formation	Foamy calcite deposit
	Osteoclast		Osteoclast