Table 2.
Demographics data of the studies.
| Authors | No. of Patients | No. of patients Bilateral UKA | No. of patients Unilateral UKA | No. of Patients Staged UKA | Sex (M/F) | Mean age (range) | BMI (range) | Mean follow-up, months (range) |
|---|---|---|---|---|---|---|---|---|
| Feng et al. (2019) | 93 | 39 | – | 54 | Bilateral Male 3, Female 33 Staged Male 5, Female 49 |
Bilateral 65 ± 8 Staged 64 ± 6 |
Bilateral 24 ± 2.5 Staged 24 ± 2.5 |
42 (32–133) |
| Biazzo et al. (2018) | 102 | 51 | – | 51 | Bilateral Male 13, Female 38 Staged Male 19, Female 32 |
Bilateral 70 (68–73) Staged 69 (65–72) |
Bilateral 29 (28–31) Staged 29 (27–30) |
1 |
| Clavé et al. (2018) | 150 | 50 | 100 | – | Bilateral Male 35, Female 15 Unilateral Male 66, Female 34 |
Bilateral 64.4 (50–86.7) Unilateral 68.1 (56–87) |
Bilateral 28.8 (22.1–38.9) Unilateral 29.8 (21.9–47.6) |
Bilateral 44 (24–84) Unilateral 61 (24–96) |
| Ahn et al. (2017) | 104 | 52 | 52 unilateral (TKA) | – | Bilateral Male 48, Female 4 Unilateral (TKA) Male 48, Female 4 |
Bilateral 65.1 (49–87) Unilateral (TKA) 65.6 (51–83) |
Bilateral 28.1 (22–35) Unilateral (TKA) 28.3 (21.8–37.9) |
6 |
| Ma et al. (2015) | 81 | 36 | – | 45 | Bilateral Male 15, Female 21 Staged Male 18, Female 27 (p = 0.88) |
Bilateral 65.6 ± 6.1 Staged 65.3 ± 5.6 (p = 0.8) |
Bilateral 25.0 ± 1.9 Staged 25.5 ± 2.0 (p = 0.25) |
50 (12–84) |
| Romagnoli et al. (2015) | 490 | 191 | 299 | – | Bilateral Male 72, Female 119 Unilateral Male 120 Female 179 |
Bilateral 67.5 (66–69) Unilateral 68.2 (67–69) |
Bilateral 30 (29–31) Unilateral 29 (28–29) |
6 |
| Winder et al. (2014) | 72 | 28 | – | 44 | Bilateral Males 16, Females 12 | Bilateral 64 ± 10 | NR | 3 |
| Chen et al. (2013) | 171 | 124 | – | 47 | Bilateral Male 33, Female 91 Staged Male 11, Female 36 |
Bilateral 62.9 (45–86.1) Staged 61.6 (51.0–82.3) |
Bilateral 27.3 (19.1–42.3) Unilateral 26.8 (19.5–33.7) |
1 |
| Berend et al. (2011) | 176 | 35 | – | 141 | NR | Bilateral 58 (55–62) Staged 63 (61–64) |
Bilateral 31 (29–32) Staged 33 (32–35) |
Bilateral 19.4 Staged 13.9 |
| Chan et al. (2009) | 239 | 159 | – | 80 | Bilateral Male 92, Female 67 Staged Male 35, Female 45 |
Bilateral 66 (42–85) Staged 66 (48–86) |
NR | 1 |
TKA Total Knee Arthroplasty, NR Not Reported, BMI Body Mass Index, BUKA Bilateral Unicompartmental Knee Arthroplasty, BTKA Bilateral Total Knee Arthroplasty.