Observational study of a new modular femoral revision system

Table 1 Baseline data

	Count (valid percent)	Mean (range)
Sex
Male	57 (49)
Female	59 (51)
Age at operation (yr)		73 (39-95)
ASA
1	21 (20)
2	54 (51)
3	31 (30)
4 and 5	0
Missing data	10
Cause for revision
Aseptic loosening	80 (69)
Periprosthetic fracture	17 (15)
Infection	14 (12)
Other	5 (4)
Missing data	2
Revised stem
BiMetric	38 (32)
Spotorno	20 (17)
Lubinus	22 (19)
Spectron	7 (6)
Corail	6 (5)
Taperloc	2 (2)
Scanhip	2 (2)
Müller	4 (3)
Girdlestone	4 (3)
Osteostynthesis	3 (3)
Other	7 (6)
Missing data	1
Cemented	72 (62)
Not cemented	44 (38)

ASA: American Society of Anaesthesiologists physical status classification; (1) Patient is a completely healthy fit patient. (2) Patient has mild systemic disease. (3) Patient has severe systemic disease that is not incapacitating. (4) Patient has incapacitating disease that is a constant threat to life. And (5) A moribund patient who is not expected to live 24 hours with or without surgery.