Page 47 - The value of total hip and knee arthroplasties for patients

Outcome of total hip arthroplasty, but not of total knee arthroplasty, is related to the preoperative radiographic severity of osteoarthritis
Medical Research Ethics Committee of Leiden University Medical Center, Leiden, the Netherlands.Written informed consent to participate in the study was obtained from all patients.
Results 3
Preoperative patient characteristics
There was no statistically significant difference between the preoperative characteristics of the patients who were included in the study and those of the 41 THA and 51 TKA patients who were not included because of missing radiographs (results not shown).
Preoperative characteristics of patients with mild or severe radiographic OA
Overall, there were no statistically significant differences between patients with mild or severe radiographic OA with respect to sex, age, BMI, preoperative HOOS/ KOOS, OHS/ OKS, EQ score, EQ-VAS score, or SF (all subscales), for both THA and TKA.The exceptions were a significantly higher preoperative KOOS “Sports” score and SF “MCS” score in the KL 3–4 group than in the KL 0–2 group, in both THA patients andTKA patients (Table 1).
Table 1. Characteristics of patients undergoing THA and TKA differences in severity of radiological damage
Variable
Gender, Female; no (%)
Age, years (mean, SD)
0-55 56-65 66-75 76-85+
Body Mass Index (mean, SD)
Education level: no (%)
Low Medium High
THA Patients
KL grade 0-2 (N=77)
45 (58%)
66.0, 10.6 12 (16%) 23 (30%) 29 (38%) 13 (17%)
27.8, 4.5
31 (40%) 22 (29%) 24 (31%)
THA Patients KL grade 3-4 (N=225)
132 (59%)
68.0, 9.0 17 (8%) 71 (32%) 93 (41%) 44 (20%)
26.7, 4.4
81 (36%) 70 (31%) 74 (33%)
P TKA Patients KL grade 0-2
(N=74)
0.702 56 (76%)
0.297 66.7, 10.1 0.452 6 (8%)
23 (31%) 31 (42%) 14 (19%)
0.055 29.9, 4.5
21 (68%) 19 (26%) 5 (7%)
TKA Patients KL grade 3-4 (N=197)
135 (69%)
67.2, 9.5 22 (11%) 61 (31%) 74 (38%) 40 (20%)
29.5, 4.7
90, (46%) 64 (33%) 43 (22%)
P
0.250
0.732 0.153
0.524
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