Table 1 Patient demographics

Age

67 ± 2

72 ± 2

0.31

Sex

6 male 18 female

6 male 20 female

0.81

Joint

22 hip 2 knee

16 hip 10 knee

0.07

Height (m)

1.62 ± 0.03

1.64 ± 0.03

0.78

Weight (kg)

85.2 ± 6.4

74.5 ± 6.1

0.26

BMI (kg/m²)

32.3 ± 2.4

27.7 ± 1.7

0.17

Charlson Comorbidity Index

2.9 ± 0.5

2.7 ± 0.3

0.74

Cardiovascular disease

12

14

0.79

Diabetes mellitus

4

4

0.72

Autoimmune disease

0

0

N/A

Cancer

0

0

N/A

Respiratory disease

4

3

0.45

Osteoporosis

0

0

N/A

Renal impairment

2

0

0.18

Immunomodulatory meds

0

0

1.00

Blood tests

 Haemoglobin (g/L)

130 ± 3

134 ± 3

0.36

 Creatinine (µmol/L)

74 ± 10

62 ± 5

0.87

 eGFR

74 ± 5

80 ± 3

0.94

 Calcium (mmol/L)

2.29 ± 0.05

2.29 ± 0.05

0.87

 Phosphate (mmol/L)

1.30 ± 0.30

1.36 ± 0.31

0.94

 Magnesium (mmol/L)

0.81 ± 0.04

0.72 ± 0.03

0.34

 Potassium (mmol/L)

4.69 ± 0.17

4.38 ± 0.10

0.20