Table II. Demographic data and characteristics of observational studies.9,17,18,31,46–55.
| Author and year | Study | Follow-up months (average) | Method | Number of knees operated | Average age (years) | Women % | BMI (kg/m2) |
|---|---|---|---|---|---|---|---|
| Blakeney 201917 | Case control study | 33,5 | Kinematic | 18 | 61 ± 8 | 67 | 31 ± 6 |
| Mechanical | 18 | 64 ± 7 | 67 | 32 ± 3 | |||
| An 201918 | Retrospective cohort study | 0 | Kinematic | 90 | 67 ± 12 | 61 | No comparison |
| Mechanical | 120 | 67,9 ± 10,7 | 63 | ||||
| Jeremić 202046 | Case control study | 12 | Kinematic | 24 | 70,7 ± 6,7 | No differences | 30,6 ± 4,5 |
| Mechanical | 24 | 72.5 (5.8) | 30.0 (4) | ||||
| Luceri 202047 | Retrospective cohort study | 3 | Kinematic | 13 | 70 ± 7,1 | 54 | 28,5 ± 4,8 |
| Mechanical | 13 | 69,1 ± 8 | 69 | 27,4 ± 3,4 | |||
| Shelton 2021*48 | Retrospective cohort study | 36 ± 16 | Kinematic | 78 | 70 ± 8 | 73 | 31 ± 6 |
| 120 ± 54 | Mechanical | 78 | NA | 73 | NA | ||
| Abhari 202149 | Retrospective cohort study | 12 | Kinematic (1-5º varus) |
43 | 66 ± 1,5 | 58 | 34 ± 1 |
| Kinematic (6-10º varus) |
56 | 68 ± 1,2 | 36 | 31 ± 0,71 | |||
| Kinematic (11-14º varus) |
16 | 67 ± 2,7 | 44 | 34 ± 1,7 | |||
| Mechanical | 115 | No differences | BMI higher than in KA | ||||
| Alexander 202250 | Retrospective cohort study | 1,5 | Kinematic | 107 | 65 ± 8,6 | 57 | 34,2 ± 8 |
| Mechanical | 223 | 64,5 ± 8,5 | 59 | 32,5 ± 6,6 | |||
| Elbuluk 202251 | Retrospective cohort study | 24 | Kinematic (cutting guide) | 100 | No differences in age, sex, BMI or coronal plane deviation. | ||
| Mechanical (navigated) | 100 | ||||||
| Sappey-Marinier 202231 | Case series | 32 ± 26 | Mechanical | 7 | 70,1 ± 9,3 | 57 | 27 ± 3 |
| Kinematic | 7 | ||||||
| Winnock de Grave 20229 | Retrospective cohort study | 12 | Inverted kinematic | 40 | 69,9 ± 8,3 | 60 | 29,2 ± 4,8 |
| Mechanical (adjusted) | 40 | 67,4 ± 9,5 | 58 | 30 ± 5,3 | |||
| Choi 202252 | Retrospective cohort study | 24 | Functional (robotic) | 60 | 70 ± 5,7 | 78 | 26,7 ± 2,6 |
| Mechanical (manual) | 60 | 70,1 ± 5,7 | 78 | 27,1 ± 3,5 | |||
| Lung 202253 | Retrospective cohort study | 3 | Kinematic | 44 | 68,5 ± 7,5 | 63 | 31 ± 6,6 |
| Mechanical | 57 | 68,2 ± 7,7 | 65 | 32,6 ± 5,6 | |||
| Ma 202254 | Ambispective cohort study | 6 | Restrictive kinematic | 48 | 69,3 | 86 | 27,2 |
| Mechanical | 45 | 67,4 | 78 | 25,2 | |||
| Wen 202355 | Retrospective cohort study | 30,8 | Kinematic | 65 | 70,6 ± 6,4 | 70 | 27,3 ± 3,4 |
| Mechanical | 61 | 71,2 ± 7,1 | 66 | 27,2 ± 3,7 | |||
Note: “BMI”: Body Mass Index; “NA”: Not available. Data with statistically significant differences are shaded in gray.
* Prior primary mechanical alignment total knee arthroplasty (TKA) in the contralateral limb.