Table 2.

Mean relative rotations between bone fragments over each movement axis (roll, pitch and yaw) over time using the standard and test frames

		Rotation over x-axis – roll (°)		Rotation over y-axis – pitch (°)		Rotation over z-axis – yaw (°)
	Cycles	Mean	SD	Mean	SD	Mean	SD
Standard frame	1,225	3.070	1.803	0.478	0.269	1.379	0.886
	2,225	2.130	0.696	0.437	0.208	1.396	0.679
	3,000	2.172	0.778	0.429	0.195	1.425	0.737
	5,000	2.177	0.842	0.438	0.187	1.535	0.654
	7,000	2.157	0.851	0.431	0.181	1.564	0.635
	9,000	1.882	0.703	0.359	0.101	1.486	0.457
	Total	2.264	0.982	0.428	0.177	1.464	0.467
Test frame	1,225	2.109	0.693	0.411	0.148	1.237	0.170
	2,225	2.121	0.662	0.413	0.165	1.265	0.155
	3,000	1.813	0.310	0.415	0.178	1.147	0.287
	5,000	2.189	0.670	0.372	0.175	1.196	0.147
	7,000	2.242	0.578	0.366	0.185	1.236	0.226
	9,000	2.237	0.611	0.399	0.273	1.090	0.128
	Total	2.118	0.553	0.396	0.171	1.195	0.189

SD, standard deviation.