Table 1.
Overview of prevalence of kneeling difficulties after total knee replacement from cohort studies
| Study and country | Numbers of patients and post-operative time point(s) | Kneeling assessment | Findings |
|---|---|---|---|
| Artz et al, 20159
UK |
196 patients at 1 year 184 patients at 2 years |
OKS kneeling question | 63% extreme difficulty or impossible at 1 year 65% extreme difficulty or impossible at 2 years |
| Baker et al, 20078
UK |
8231 patients at ⩾ 1year | OKS kneeling question | 57% much difficulty or impossible |
| Benfayed et al, 201714
UK |
251 patients at 1 year | Difficulty performing four kneeling positions | Upright kneeling on operated knee: 63% extreme difficulty or impossible Upright kneeling on both knees: 67% extreme difficulty or impossible Kneeling at full flexion: 87% extreme difficulty or impossible Kneeling with hands on ground: 74% extreme difficulty or impossible (estimated from graph) |
| Dawson et al, 199823
UK |
87 patients at 6 months | OKS kneeling question | 62% extreme difficulty or impossible at 6 months |
| Hassaballa et al, 200310
UK |
109 TKRs at 1 year 75 TKRs at 2 years |
OKS kneeling question | 58% extreme difficulty or impossible at 1 year 56% extreme difficulty or impossible at 2 years |
| Roos et al, 200313
Sweden |
97 patients at 6 months |
KOOS kneeling question | 74% patient did not kneel at 6 months |
| Sharkey et al, 201112
USA |
49 patients at 3 weeks to 5 years | Single question on presence of kneeling difficulties | 82% difficulty kneeling |
| Weiss et al, 20027
USA |
176 patients ⩾ 1year post-op | Question within Knee Function Survey | 72% had some knee symptoms when kneeling |
| Wylde et al, 201711
UK |
245 patients at 3 months 236 patients at 1 year 219 patients at 2 years 231 patients at 3 years 210 patients at 5 years |
Single item question on difficulty kneeling | 58% much difficulty or impossible at 3 months 65% much difficulty or impossible at 1 year 69% much difficulty or impossible at 2 years 69% much difficulty or impossible at 3 years 67% much difficulty or impossible at 5 years |
Notes. OKS, Oxford Knee Score; KOOS, Knee injury and Osteoarthritis Outcome Score