Table 1

Baseline Characteristics at the Time of Discharge from the Acute Care Hospital for 120 Patients Who Underwent Total Knee Arthroplasty

CharacteristicHealth servicep value
Continuous passive motion (n = 40)Slider board (n = 40)Standardized exercise (n = 40)
Demographics*
 Age, yr, mean (and SD)69 (8)68 (9)68 (9)0.09
 Female12 (30)20 (50)21 (53)0.09
 Diagnosis of osteoarthritis36 (90)38 (95)35 (88)0.50
 No comorbid conditions28 (70)22 (55)29 (73)0.36
 > 1 joint with osteoarthritis18 (45)22 (54)19 (48)0.72
Clinical variables, mean (and SD)
 Preoperative knee ROM, °108 (18)106 (18)106 (16)0.86
 WOMAC pain score51 (15 )46 (13)47 (14)0.20
 WOMAC function score53 (15)41 (13)51 (14)0.64
Hospital variables
 Mean (and SD) inpatient medication use§16.2 (4)16.4 (6)16.8 (5)0.89
 Mean (and SD) acute care length of stay, d6.9 (1.7)7.2 (2.6)7.5 (3.0)0.56
 Inpatient complications, no. (and %)6 (15)10 (25)5 (12)0.66
  • * No. (and %) unless otherwise indicated.

  • One-way analysis of variance

  • χ2 analysis

  • § Utilizing the Medication Quantification Scale.

  • SD = standard deviation, ROM = range of motion, WOMAC score = Western Ontario and McMaster University score.