Table 1.

Data on patients, surgical procedures, and number of measurements

Parameter	Patient
	WP1	WP2	WP3	WP4	WP5
Sex (M/F)	M	M	F	M	M
Age at the time of surgery (years)	62	71	69	63	66
Height (cm)	168	169	168	170	180
Body mass (kg)	66	74	64	60	63
Fractured vertebra	L1	L1	L1	L1	L3
Level of internal fixation device	T12–L2	T12–L2	T11–L3	T11–L3	L2–L4
Implantation date (month/year)	09/2006	11/2006	03/2007	01/2008	07/2008
Total no. of load measuring sessions	28	18	20	16	15
No. of measuring sessions with standing	22	15	17	14	14
No. of measuring sessions with walking	17	12	12	10	9
No. of evaluated trials for standing	199	127	156	127	122
No. of evaluated trials for walking	156	114	120	98	84