Yichen Gong, Hai Su, Zhaokai Jin, Haojin Zhou, Lei Chen, Ruinan Chen, Yi Tang, Yichen Lu, Jiali Chen, Guoqian Chen, Peijian Tong

Bleeder's Femur: The Proximal Femoral Morphology in Hemophilic Patients Who Underwent Total Hip Arthroplasty

  • Orthopedics and Sports Medicine
  • Surgery
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IntroductionPatients with hemophilia (PWH) constantly suffer hemarthrosis, which leads to deformity of the hip joint. Therefore, PWH who are going to receive total hip arthroplasty (THA) should be exclusively treated before the surgery with careful measurement of their proximal femur. Hence, we conducted a retrospective study to explore the anatomical parameters of and differences in the proximal femur in hemophilic patients who underwent THA.MethodsThe retrospective study comprised data of adult patients who received total hip arthroplasty from 2020 to 2022 in the research center. Patients having a diagnosis of hemophilic arthritis and received THA were included in experimental group, and patients with hip arthritis or femoral head necrosis were taken as control group. Parameters including femoral offset, neck‐shaft angle (NSA), medullary cavity of 20 mm above mid‐lesser trochanter level (T+20), mid‐lesser trochanter level (T), and 20 mm blow it (T−20), and canal flare index (CFI), femoral cortical index (FCI) were measured on X‐ray and CT images with PACS by two independent doctors. Data was analyzed by SPSS 20. Kolmogorov–Smirnov test was used to test data normality. Student's t‐test was performed between PWH and control group. p < 0.05 was considered statistically significant.ResultsAmong the 94 hips, 39 (41.5%) were included in group hemophilia and 55(58.5%) in control group. The mean age of the patients was 49.36 ± 12.92 years. All cases were male patients. Data demonstrated significantly smaller femoral cortical index (FCI), femoral offset, medullary cavity of 20 mm above mid‐lesser trochanter level, mid‐lesser trochanter level, and 20 mm below it, and neck‐shaft angle (NSA) was obviously larger in PWH than control group (p < 0.05). No significant difference was found in canal flare index (CFI).ConclusionHemophilic patients undergoing THA were prone to longer and thinner proximal femur. Preoperative morphological analysis of femur is recommended.

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