Resumo

LOPEZ, Pablo D. et al. Método simple para minimizar la discrepancia en la longitud de las extremidades y restaurar el offset en la artroplastia total de cadera. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2023, vol.88, n.5, pp.548-556. ISSN 1852-7434.  http://dx.doi.org/https://doi.org/10.15417/issn.1852-7434.2023.88.5.1793.

Introduction: There are more than 20 different techniques to correct lower limb length discrepancy. The method evaluated in this study is based on a fixed pin in the iliac wing connected to a mobile gauge and another pin in the greater trochanter with which the reference is marked. The objective is to evaluate the reliability of this measurement device used during THA to restore lower limb length and femoral offset. Materials and Methods: Two groups were formed: Group A (patients who did not use the device) and Group B (patients who did use the device). Measurements were taken in the pre-surgery panoramic pelvic radiograph with the patient standing and three months later. Results: A sample of 80 patients was obtained, with 40 in each group. The difference in limb length could be corrected in each group, however the average correction achieved by both groups did not result in a statistically significant difference (p=0.07). However, when the variance in the correction of the difference in length of each group was examined, a statistically significant difference (p<0.001) was obtained. Conclusions: We can conclude that while this device, which serves as a more objective quantifiable measurement technique, does not guarantee a correction of the exact length discrepancy to 0 mm, it does allow us to work within a more dependable and safe range.

Palavras-chave : Lower limb length discrepancy; total hip arthroplasty; hip gauge.

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