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KMID : 1028220210330020078
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Hip & Pelvis
2021 Volume.33 No. 2 p.78 ~ p.86
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Relationships between Femoral Offset Change and Clinical Score following Bipolar Hip Arthroplasty in Femoral Neck Fractures
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Kim Sung-Soo
Kim Hyeon-Jun
Shim Chang-Heon
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Abstract
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Purpose: This study aimed to investigate the relationship between femoral offset (FO) and clinical outcomes of patients with femoral neck fracture following bipolar hip arthroplasty (BHA).
Materials and Methods: Records for a total of 520 patients who underwent BHA for a femoral neck fracture between December 1, 2003, and September 30, 2018, were reviewed retrospectively. Patients with unclear medical records, a congenital deformity and preoperative trauma history of the hip, high-energy multiple trauma, or a history of neurodegenerative disease or cerebrovascular disease were excluded. The remaining 77 patients included in the analysis had a minimum follow-up period of one year. For clinical assessment, the postoperative pain visual analogue scale (VAS) and Harris hip score (HHS) were analyzed at each follow-up period. For radiological assessment, the difference in leg length discrepancy (LLD) and FO were measured.
Results: The difference in mean FO postoperatively was 6.7±4.8 mm, and the difference in mean postoperative LLD was 4.9±3.4 mm. The mean HHS was 77.1±7.7, 82.3±8.6, 83.4±7.7, and 86.4±6.7 at 1, 3, 6, and 12 months postoperative, respectively. The correlation coefficient between FO and HHS in 1-year follow-up was ?0.38, and a statistically significant outcome was found (P=0.001). For the HHS domain, the correlation coefficient for function at 1-year follow-up was ?0.42, revealing a statistically significant outcome (P=0.0001).
Conclusion: There was a statistically significant correlation between clinical outcomes and FO difference at 1 year after BHA in patients over 65 years of age with femoral neck fractures.
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KEYWORD
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Femoral neck fractures, Hemiarthroplasty, Offset
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