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Table 1 Total hip and knee arthroplasty patients characteristics, 2001–2012

From: Comparing co-morbidities in total joint arthroplasty patients using the RxRisk-V, Elixhauser, and Charlson Measures: a cross-sectional evaluation

   Total hip arthroplasty Total knee arthroplasty
   N (%) N (%)
Total   11,848 100.0 18,972 100.0
Gender Females 5,898 49.8 9,047 47.7
  Males 5,950 50.2 9,925 52.3
Age, years (median, IQR)   80.9 76.4–84.4 79.8 74.7–83.5
THA diagnoses (ICD-10-AM code) Other primary coxarthrosis (M161) 9,648 81.4 - -
Coxarthrosis unspecified (M169) 1,109 9.4 - -
Unspecified osteonecrosis pelvis thigh (M8795) 343 2.9 - -
Other 748 6.3   
TKA Diagnosis (ICD-10-AM Code) Other primary gonarthrosis (M171) - - 16,329 86.1
Gonarthrosis unspecified (M179) - - 1,437 7.6
Primary gonarthrosis bilateral (M170) - - 489 2.6
Other - - 717 3.8
Number of RxRisk-V co-morbidities 0 1,466 12.4 3,290 17.3
1–2 747 6.3 938 4.9
3–4 2,041 17.2 2,785 14.7
5–6 2,888 24.4 4,398 23.2
≥7 4,706 39.7 7,561 39.9
Number of Elixhauser co-morbidities 0 6,087 51.4 9,910 52.2
1–2 4,333 12.1 7,034 37.1
≥3 1,428 12.1 2,028 10.7
Number of Charlson co-morbidities 0 8,529 72.0 13,917 73.4
1–2 2,946 24.9 4,628 24.4
≥3 373 3.1 427 2.3
  1. IQR interquartile range, THA total hip arthroplasty, TKA total knee arthroplasty, ICD-10-AM International Classifications of Disease, 10th Revision, Australian Modification