Table 4

Beneficial and limiting prognostic factors for return to work after total knee arthroplasty

Beneficial factors Outcome measure Authors Limiting factors Authors Outcome measure
Patient specific
Sense of urgency about returningAcc factor 0.468StyHaving less pain preoperativelySty*
Being femaleAcc factor 0.783StyBeing femaleKui, FooOR 3.2 (95% CI 1.3 to 8.2), HR 1.62 (0.81 to 3.23)
Higher FCIAcc factor 0.914StyBody mass index≥30.0KuiOR 2.8 (CI 1.1 to 7.1)
Higher WOMAC physical function scoreAcc factor 0.809Sty
Higher mental composite SF-12Acc factor 0.891Sty
Being maleOR 4.4San
Age group<45 yearsOR 3.10, 95% CI 1.29 to 7.47Bel
Work-related
Working handicap- accessible workplaceAcc factor 0.783StyReceiving workers compensationStyAcc factor 4.360
Being self-employedAcc factor 0.792StyHaving a more physically demanding jobStyAcc factor 1.116
Job class (business, finance, administration)OR 5.5SanJob type (sales and services)SanSales and services OR 0.9
Job class health, science, artsOR 4.0SanNot being employedLya*
Physical demandingOR 1.3SanVery heavy work/higher level of manual occupational levelKle6.2 weeks longer p=0.001
Being employed*LyaPreoperative sick leaveKle, Kui, JorAverage 4.6 longer p=0.016, OR 12.5 (95% CI 5.0 to 31.5)*
Heavy or medium work load0.4 weeks faster p=0.011LomSubjectively work-relatedness of knee symptomsKuiOR 5.3 (95% CI 2.0 to 14.1)
Sedentary work/light workload2.4 weeks faster p=0.011*Lom, Cly, JorMedium knee-demanding job (reference to light)KuiOR 3.3 (95% CI 1.3 to 8.2)
Higher level of qualification2.7 weeks faster p=0.041Kle
Duration of preoperative sick leave and postoperative sick leave*Jor
Combat armsOR 2.75, 95% CI 1.13 to 6.73Bel
  • *Data missing.

  • Acc factor, acceleration factor; FCI, Functional Comorbidity Index; SF-12,  Physical and Mental Health Summary score; WOMAC, Western Ontario & McMaster Universities Osteoarthritis Index.