Table 5 Radiological results of the preoperative comparison and postoperative comparison between OWHTO and CWHTO after excluding the results of the follow-up within 1 year
Categories and comparison | Studies | Mean difference | P value | Heterogeneity | ||
|---|---|---|---|---|---|---|
Mean | (95% CI) | I2 (%) | p value | |||
CWHTO VS OWHTO in preoperative outcomes | ||||||
Radiological outcomes RCT | ||||||
 HKA | 10,24,27,30 | 0.14 | (− 0.11 to 0.39) | 0.266 | 0 | 0.703 |
 PTSA (AX) | 24 | − 0.30 | (− 0.81 to 0.21) | 0.242 | NA | NA |
 ISI | 31 | 0.06 | (− 0.49 to 0.61) | 0.84 | NA | NA |
Radiological outcomes nRCT | ||||||
 PTSA (PC) | 12 | − 0.18 | (− 0.54 to 0.17) | 0.314 | NA | NA |
 CDI | 42 | − 0.25 | (− 0.67 to 0.17) | 0.24 | NA | NA |
CWHTO VS OWHTO in postoperative outcomes | ||||||
Radiological outcomes RCT | ||||||
 HKA | 10,24, 27,30 | 0.249 | (− 0.01 to 0.503) | 0.06 | 0 | 0.769 |
 HKA CORRECTION | 24, 27 | 0.15 | (− 0.21 to 0.63) | 0.40 | 0 | 0.35 |
 PTSA (AX) | 24 | − 1.47 | (− 2.04 to − 0.90) | 0.001 | NA | NA |
 ISI | 31 | 0.59 | (0.02 to 1.15) | 0.041 | NA | NA |
Radiological outcomes nRCT | ||||||
 PTSA (PC) | 12 | − 1.72 | (− 2.139 to − 1.30) | 0.001 | NA | NA |
 CDI | 42 | 1.01 | (0.55 to 1.44) | 0.001 | NA | NA |