Table 4 Metal-on-metal studies included in review.

Amstutz (2000) [9] Specialist orthopedic hospital, USA. (Observational) Not reported

Cemented, modified McMinn acetabular (7 Hips)

Conserve Plus (29 Hips)

22 months (NR)

40 years (NR)

NR

NR

McMinn (1996) [10] 3 Birmingham Hospitals, UK. (Observational) Not reported

Uncemented, Uncoated (70 Hips)

50.2 months (44–54)^a

48.7 years (NR)

8/66 patients = 12.1%

60/66 = 90.9% patients pain free

pain 3.1^b/5.3

mobility 3.1^b/5.3

walking 3.1^b/5.3

Uncemented, Hydroxyapetite coating (6 Hips)

40.2 months (38–42)^a

0/6 patients = 0%

pain 3.0^b/5.5

mobility 3.1^b/6.0

walking 2.7^b/5.7

Cemented acetabular (43 Hips)

33.2 months (23–38)^a

4/39 patients = 10.3%

pain 2.9^b/5.4

mobility 3.0^b/5.4

walking 3.2^b/5.4

Cemented acetabular, Hydroxyapetite coating (116 Hips)

8.3 months (1–19)^a

0/109 patients = 0%

pain 3.0^b/5.7

mobility 3.2^b/5.7

walking 3.2^b/5.7

Schmalzried (1996) [11] Specialist orthopedic hospital, USA. (Observational) Not reported

Cementless Wagner (4 Hips)

Cemented McMinn (17 Hips)

16 months (10–25)

42 years (22–64)^a

1/19 patients = 5.3%

pain 4^c/9

walking 6^c/9

function 6^c/9

activity 4^cd/7

Wagner (1996) [12] Specialist orthopedic hospital, Germany. (Observational) Not reported

2 Ti pins on cupshell (12 Hips)

Press fit version (23 Hips)

20 months (6–54)

36 years (15–64)^a

5/35 patients = 14.3%

32 (5–51)^e

d/94 (72–100)^ed

Corin Group Ltd, 2001 [18] 4 UK Hospitals, 1 UK clinic, 3 surgeons (Industry submission) Corin Group Ltd

Cormet 2000

21.36 months^f

50.8 years (26–69)^f

Revision Rate CIC

69/97 = 71.1%^f

Patients pain free

NR

Midland Medical Technologies Ltd, 2001 [19] Hospitals in Birmingham Southampton Liverpool and Belgium (Industry submission) Midland Medical Technologies Ltd

Birmingham Hip Resurfacing (1761 Patients)

NR

49.2 years (15–86)

8/1382 hips = 0.6%

NR

Wright Cremascoli Ortho Ltd, 2001 [21] (Industry submission) Wright Cremascoli

Conserve Plus (100 Hips)

NR (24–51.6)

NR

3/100 hips = 3%

NR

Oswestry Outcome Centre Database [20] Oswestry Outcome Centre (Unpublished observational data) Oswestry Outcome Centre

McMinn (1378 Hips)

All consultants (4424 Hips)

0–4 years

0–4 years

53.1 (NR)

49.2 (NR)

7/1378 = 0.5%

34/4424 = 0.77%

66.2^e/98.1^e

61.3^e/95.9^e