Table 1.

Specifications of all investigated stems

Stem	Manufacturer	Stem-size	Type [1]	Length	max. Depth
Silent®	DePuy®, London, UK	24 × 45	collum	45 mm	24 mm
Metha®	B.Braun Aesculap®, Tuttlingen, Germany	2	partial collum	92 mm	19 mm
Nanos®	Smith&Nephew®, London, UK	2	partial collum	92 mm	17 mm
Aida®	implantcast®, Buxtehude, Germany	0	trochanter sparing	96 mm	16 mm
Fitmore®	Zimmer®, Warsaw, USA	A4	trochanter sparing	93 mm	14 mm
SMF®	Smith&Nephew®, London, UK	1	trochanter harming	90 mm	18 mm
Profemur Preserve®	MicroPort Orthopedics®, Arlington, USA	1	trochanter harming	91 mm	15 mm
Spotorno® (standard)	Zimmer®, Warsaw, USA	8	-	146 mm	17 mm