Table 2
Femoral and tibial component positioning data among the included studies.
| Femoral component |
Tibial component |
|||||
|---|---|---|---|---|---|---|
| Study | Valgus | ER | Flexion | Varus | ER | Posterior slope |
| Andriollo et al. [12] * | 0.5° ± 1.8° | 0.2° ± 1.85° | 6.9° ± 2.6° | 3.3° ± 1.7° | NR | 0.8° ± 0.8° |
| Andriollo et al. [13] * | 0.5° ± 1.8° | 0.2° ± 1.85° | 6.9° ± 2.6° | 3.3° ± 1.7° | NR | 0.8° ± 0.8° |
| Andriollo et al. [14] * | 0.5° ± 2° | 0.2° ± 1.7° | 6.6° ± 2.7° | 3.4° ± 1.7° | NR | 0.7° ± 0.8° |
| Choi et al. [15] * | 6.3° | 2° | NR | 0.8° | NR | 2.6° |
| Clark et al. [7]* | NR | NR | NR | NR | NR | NR |
| Daffara et al. [16] | NR | NR | NR | NR | NR | NR |
| Diquattro et al. [17] | NR | NR | NR | NR | NR | NR |
| Diquattro et al. [18] | NR | NR | NR | NR | NR | NR |
| Koutserimpas et al. [19]* | F: 1.1° | F: 0 | F: 8.1° | F: 3° | NR | F: 0 |
| M: 0.3° | M: 0.3° | M: 6° | M: 3.5° | M: 1° | ||
| Koutserimpas et al. [20]# | Varus: 0.7° | Varus: 0.1° | Varus: 7° | Varus: 3.5° | Varus: 0 | Varus: 1° |
| Valgus: 1.5° | Valgus: 0.5° | Valgus: 9° | Valgus: 1° | Valgus: 0 | Valgus: 0 | |
| Koutserimpas et al. [21]# | ≤3°: 0.7° | ≤3°: 0 | ≤3°: 7.05° | ≤3°: 2° | ≤3°: 0 | ≤3°: 1° |
| >3°: 0.7° | >3°: 0.3° | >3°: 7° | >3°: 4.5° | >3°: 0 | >3°: 1° | |
| Koutserimpas et al. [22]# | BMI ≥30: 0.9° | BMI ≥30: 0 | BMI ≥30: 7.25° | BMI ≥30: 3° | BMI ≥30: 0 | BMI ≥30: 1° |
| BMI <30: 0.9° | BMI <30: 0.35° | BMI <30: 7.7° | BMI <30: 3.5° | BMI <30: 0 | BMI <30: 1° | |
| Koutserimpas et al. [23]# | CS: 0.9° | CS: 0 | CS: 7.9° | CS: 3.5° | CS: 0 | CS: 1° |
| PS: 1° | PS: 0.1° | PS: 7.8° | PS: 3° | PS: 0 | PS: 0 | |
| Koutserimpas et al. [24]# | CL: 1° | CL: 0 | CL: 7.5° | CL: 3.5° | CL: 0CM: 0 | CL: 1°CM: 0.5° |
| CM: 0.95° | CM: 0.3° | CM: 7.55° | CM: 2.25° | |||
| Koutserimpas et al. [25]# | ≥10°: 0 | ≥10°: 0 | ≥10°: 6.2° | ≥10°: 4° | NR | ≥10°: 1° |
| <10°: 1° | <10°: 0.2° | <10°: 7° | <10°: 3.5° | <10°: 0 | ||
| Koutserimpas et al.[26]# | rFKP: −2.1° | rFKP: 1.8° | rFKP: 4.4° | rFKP: 1° | NR | rFKP: 1° |
| unFKP: −1.1° | unFKP: 0.4° | unFKP: 7° | unFKP: 4.5° | unFKP: 1° | ||
| Manara et al. [27] | NR | NR | NR | NR | NR | NR |
| Nixon et al. [8]* | NR | 6° | NR | NR | NR | NR |
| Yang et al. [28]* | 0.9° ± 1.9° | 2.5° ± 2.4° | 1.8° ± 1.8° | 4.2° ± 1.6° | NR | 6.1° ± 1.1° |
| Young et al. [29]* | FA: NR | FA: NR | NR | FA: NR | NR | FA: NR |
| MA: 0 | MA: 0 | MA: 0 | MA: 3° | |||
| Yu et al. [30]* | NR | NR | NR | NR | NR | NR |
Data are expressed as mean* or median# (degrees of angle) ± SD.
Abbreviations: ER, external rotation; IR, internal rotation; F, female; M, male; BMI, body mass index; CS, cruciate-substituting; PS, posterior stabilize; CL, cementless; CM, cemented; rFKP, restricted functional knee positioning; unFKP, unrestricted functional knee positioning; FA functional alignment; MA, mechanical alignment; NR, not reported.
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