Table 2 Studies which evaluated the role of PSI-THA
Author | Study Type / Number of Patients | Study Group 1 | Study Group 2 | Outcome | Results |
|---|---|---|---|---|---|
Inoue D. et al., [10] | Prospective cohort study / 14 hips | Preoperative templated CT | Postoperative CT | Postoperative CT of patients who underwent THA with MRI based PSI for acetabulum was compared to their preoperative templating. | Inclination angle in all cases were within +/-10° of preoperative templated angle but with respect to anteversion, 3 cases were outliers. After an initial learning curve all cases were within the desired target range. |
Mishra A. et al., [10] | Prospective RCT / 36 hips | PSI- THA | C-THA | Postoperative X-rays were evaluated for cup anteversion and inclination. | No statistically significant difference in acetabular cup inclination and anteversion angles between the 2 groups was found. |
Ferretti A. et al., [34] | Prospective cohort study / 36 hips | Preoperative templated CT | Postoperative CT | Postoperative CT of patients who underwent THA with CT based PSI with laser for acetabulum was compared to their preoperative templating. | No statistically significant difference in inclination and anteversion of acetabular cup in postoperative CT was found as compared to preoperative planning. |
Thomas C. et al., [12] | Prospective RCT / 51 hips | PSI-THA | C-THA | Postoperative CT was evaluated for differences in cup anteversion and inclination between the 2 groups. Functional outcome between the 2 groups up to 12 months were evaluated. | No significant difference in mean acetabular anteversion or inclination was found in both the groups. Though a greater number of outliers (>10° than preoperatively targeted) were present in C-THA group, this was not statistically significant. No difference in functional outcome was found at follow-up. |
Chen X. et al. [33] | Prospective case-control study / 60 hips | PSI-THA | C-THA | Postoperative X-rays were evaluated for cup anteversion and inclination. Functional outcomes evaluated at 4 and 12 weeks. Femoral parameters were also noted. | Statistically significant number of patients achieved accurate (<5° as preoperatively targeted) inclination and anteversion with PSI-THA as compared to C-THA. But no significant difference in functional outcomes was noted. |