Table 3 Summary of previous trials comparing clinical outcomes between patellar resurfacing (PR) and nonresurfacing (NPR)
Author | Range of motion | Feller’s patella score | American Knee Society score | Radiologic findings |
|---|---|---|---|---|
Burnett et al. [30] | No difference | N/P | No difference | No difference (anatomic axis, Insall–Salvati index patellar tilt, and subluxation) |
Enis et al. [6] | No difference | N/P | N/P | No difference (loosening, otherwise N/P) |
Smith et al. [31] | N/P | N/P | No difference | N/P |
Ha et al. [32] | N/P | PR > NPR (P < 0.001) | PR > NPR (P < 0.001) | No difference (Insall–Salvati index, patellar tilt, and subluxation) |
Koh et al. [15] | No difference | No difference | No difference | No difference (patella-to-groove distance, superior–inferior position, Insall–Salvati ratio, patellar tilt, and patella displacement) |
Dong et al. [33] | N/P | No difference | No difference | PR < NPR in Insall–Salvati index (P < 0.05) No difference in patella tilt |