Table 2 Primary surgical characteristics and femoral bone deficiency of patients undergoing revision surgery with short femoral components
Patient characteristics | Femoral stem survival (n = 359) | Femoral stem revision (n = 22) | Total (n = 381) | Statistical value | P |
|---|---|---|---|---|---|
Indication for primary THA | |||||
Osteonecrosis | 253 | 16 | 269 | 5.130a | 0.400 |
Avascular necrosis | 20 | 0 | 20 | ||
Femoral neck fracture | 49 | 5 | 54 | ||
Osteoarthritis | 24 | 1 | 25 | ||
Hip dysplasia | 9 | 0 | 9 | ||
Other | 4 | 0 | 4 | ||
Fixation feature of primary THA | |||||
Cemented | 200 | 12 | 212 | 0.011a | 0.915 |
Uncemented | 159 | 10 | 169 | ||
Femoral stem fixation segment | |||||
Metaphyseal | 21 | 1 | 22 | 2.680a | 0.262 |
Metaphyseal-diaphyseal | 317 | 21 | 338 | ||
Diaphyseal | 21 | 0 | 21 | ||
Periprosthetic femoral fracture during primary THA | |||||
No | 327 | 19 | 346 | 0.554a | 0.457 |
Yes | 32 | 3 | 35 | ||
Bearing | |||||
Metal (ceramic)-polyethylene | 319 | 18 | 337 | 1.006a | 0.316 |
Ceramic–ceramic | 40 | 4 | 44 | ||
Femoral bone deficiency (Paprosky classification) | |||||
Type I | 186 | 11 | 197 | 0.235a | 0.889 |
Type II | 149 | 10 | 159 | ||
Type-III A | 24 | 1 | 25 | ||
Short-B | 0 | 0 | 0 | ||
Type IV | 0 | 0 | 0 |