Table 2

Crude and adjusted incidence by type of OS, for both sexes

AllPopulation (1999–2015)SpA cohortNon-SpA cohort
CasesCrude rate (/100 000/year)Adjusted rate** (/100 000/year)95% CICasesCrude rate (/100 000/year)Adjusted rate** (/100 000/year)95% CI
All OS5 058 8805382106.39112.81109.79 to 3533353369.8474.6672.20 to 77.16
THA5 058 880226144.6947.4845.53 to 1220122024.1226.2524.79 to 27.80
TKA5 058 880111522.0423.3221.98 to 1209120923.9025.3523.95 to 26.86
ULA5 058 8803456.827.186.43 to 4824829.5310.119.23 to 11.03
Arthrodesis5 058 8801723.403.573.03 to 75751.481.551.22 to 1.97
Spinal surgery5 058 880152530.1532.0230.45 to 56156111.0911.7010.76 to 12.70
  • *Adjusted for age and sex.

  • OS, orthopaedic surgery; SpA, spondyloarthritis; THA, total hip arthroplasty; TKA, total knee arthroplasty; ULA, upper limb arthroplasty.