Insufficient lateral stem contact is an influencing factor for significant subsidence in cementless short stem total hip arthroplasty

Table 5 Summary of stem subsidence at two years follow-up for different types of short stems

Ref.	Femoral stem	Khanuja et al[18] classification	Follow-up (mo)	Subsidence(mm)	n
Christiansen et al[26]	Primoris, Biomed, UK	1	24	0.38	50
Schwarze et al[25]	Metha, Aesculap, Germany	2A	24	0.86	39
Jahnke et al[24]	Metha, Aesculap, Germany	2A	24	1.28 ± 2.24	71
This study	Metha, Aesculap, Germany	2A	24	0.5	274
Budde et al[27]	Nanos, Smith + nephew, Germany	2A	24	0.46 ± 0.31	18
Ferguson et al[28]	MiniHip, Corin, UK	2A	24	0.26	20
Kutzner et al[23]	Optimys, Mathys AG, Switzerland	2B	24	1.23 (contact); 2.07 (non-contact)	191
Klein et al[31]	CFP, Link, Germany	2B	24	0.3 (0.2-0.4)	39
Mahmoud et al[29]	Proxima, DePuy, UK	3	24	0.22	28
Acklin et al[30]	Fitmore, Zimmer, Switzerland	4	24	0.39	24