Table 3.

Comparison of results of published series of cemented polished collarless double-taper stems in young patients (< 55 years) and in two series of patients of all ages

Study	Number of hips	Single- or multiple- surgeon series	Varying experience	Consecutive series	Age (years)*	Followup (years)*	Number of hips lost to followup	Number of stems revised for loosening/other	Stem survival (%) to end point of revision for:			Radiographic loosening (cement-bone)	Radiographic distal osteolysis
									Aseptic loosening	Any reason	Time (years)
Patients < 55 years
Burston et al. [3]	58	Multiple	Yes	Yes	< 50	12.5 (10–17)	0	0	100	NR	12	0	NRS
Lewthwaite et al. [21]†	130	Multiple	Yes	No	42 (≤ 50)	12.5 (10–17)	0	0/1	100	99	17	0	0
Simon et al. [32]	42‡	Single		Yes	25 (17–34)	9.7 (5–17)	2	0/0	100	100	10	0	0
de Kam et al. [6]	104	Two	No	Yes	31 (16–39)	6.2 (2–13)	0	0/3	100	96	7	0	0
Current study	197	Multiple	Yes	Yes	44 (16–54)	8 (2–19)	2	0/3	100	97	13	0	0
All patients
Carrington et al. [5]†	325	Multiple	Yes	NR	68 (24–87)	15.7 (15–17)	0	0/1	100	NR	17	0	1/106 (distal)
Young et al. [37]	230	Multiple	Yes	Yes	69 (44–89)	11.2 (10–13)	1	0/3	100	95	13	0	0

The criteria for inclusion were prospective series involving all hip disorders, using cemented polished collarless double-taper stem designs (Exeter™, CPT^®); * values are expressed as mean, with range in parentheses; ^†Exeter™-based studies of Exeter™ stems; ^‡bilateral THAs in all cases; NR = not reported; NRS = not reported separately from acetabular results.