Table 2.

An example of two matched patients

	patient group 1	patient group 2
gender	female	female
age	62	64
handedness	left	left
affected arm	left	left
fracture type	Valgus impacted 3-part	Valgus impacted 3-part
accident	bike	Home fall
ASA	2	2
operation time	102 min	71 min
CMS	60	80
UCLA	22	26
SST	6	8
VAS	3	1

X-rays of the matched patients are illustrated in Fig. 1 and 2