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Table 3 Distribution of metals (median with 25th–75th percentiles) in tissues by anteversion and inclination angles

From: Retention of metals in periprosthetic tissues of patients with metal-on-metal total hip arthroplasty is reflected in the synovial fluid to blood cobalt transfer ratio in the presence of a pseudotumour

 

AO/IO (n 20)

AS/IO (n 13)

AO/IS (n 13)

AS/IS (n 14)

Synovial fluid

(ppm)

(ppm)

(ppm)

(ppm)

Cr

1.10

2.01

0.33

32.78

(p = 0.020)*

(0.77–2.85)

(0.35–20.35)

(0.18–1.67)

(4.91–49.24)

Co

0.46

1.95

0.33

4.36

(p = 0.006)**

(0.23–2.95)

(0.25–3.08)

(0.16–1.54)

(2.40–9.24)

Mo

0.06

0.18

0.03

0.95

(p = 0.008)**

(0.03–0.32)

(0.03–0.73)

(0.02–0.10)

(0.34–2.78)

Soft tissue

 Cr

30.00

70.00

60.00

830.00

(p = 0.013)*

(10.00–280.00)

(15.00–505.00)

(0.00–180.00)

(552.50–2115.00)

 Co

4.30

5.50

13.60

72.70

(p = 0.012)*

(2.40–16.70)

(2.25–46.30)

(0.600–43.20)

(13.52–179.95)

 Mo

1.10

1.00

1.50

24.20

(p = 0.012)*

(0.40–5.20)

(0.45–7.95)

(0.10–5.70)

(4.82–45.42)

Whole blood

 Cr

0.002

0.009

0.003

0.025

(p = 0.024)*

(0.001–0.023)

(0.003–0.021)

(0.001–0.007)

(0.019–0.042)

 Co

0.007

0.009

0.005

0.064

(p = 0.029)*

(0.002–0.035)

(0.004–0.047)

(0.002–0.006)

(0.022–0.097)

  1. p-values from Kruskal-Wallis test, * p < 0.05 and ** p < 0.01