Experimental Fracture Model versus Osteotomy Model in Metacarpal Bone Plate Fixation

Table 1

Maximum load (𝐹_max), Yield-load (𝐹_yield), and stiffness of native bones, monocortical- and bicortical-fixed bones in the osteotomy and fracture model.

				Mean	Range	SD	RSD [%]	%
			𝐹max [N]	482.8	360.6–779.2	104.8	21.7	100
Native bone fracturing (𝑛=20)			𝐹yield [N]	303.1	200–500	68.1	22.5	100
			Stiffness [N/mm]	122.3	67.4–207.2	35.0	28.6	100
Bone plate construct	Mono-cortical fixed	Fracture (𝑛=10)	𝐹max [N]	250.0	160.1–320.4	56.1	22.4	51.8
			𝐹yield [N]	171.5	90–255.7	54.7	31.9	56.6
			Stiffness [N/mm]	46.5	29.1–67.8	12.6	27.0	38.0
		Osteotomy (𝑛=10)	𝐹max [N]	338.4	209.7–443.3	79.2	23.4	70.1
			𝐹yield [N]	219.3	117.3–335.3	96.0	43.8	72.4
			Stiffness [N/mm]	49.5	28.5–101.7	23.5	47.4	40.5
	Bicortical fixed	Fracture (𝑛=10)	𝐹max [N]	359.4	210.6–491.3	90.4	25.1	74.4
			𝐹yield [N]	253.8	150–389.1	77.1	30.4	83.7
			Stiffness [N/mm]	56.1	27.5–98.8	21.1	37.6	45.9
		Osteotomy (𝑛=10)	𝐹max [N]	343.9	222.7–456.3	88.5	25.7	71.2
			𝐹yield [N]	236.4	150.2–346.2	69.4	29.4	78.0
			Stiffness [N/mm]	58.9	37.6–85.8	16.3	27.6	48.2