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Table 2 Diagnosis of patients with long-term unreduced hip joint dislocation, secondary osteoarthritis and pseudoarthrosis

From: Diagnosis, preoperative evaluation, classification and total hip arthroplasty in patients with long-term unreduced hip joint dislocation, secondary osteoarthritis and pseudoarthrosis

  Only X-ray X-ray + CTa X-ray + CTa + 3D reconstruction
Sensitivity (95% CI) 18.8% (0–37.9%)b 50.0% (25.5–74.5%)c 93.8% (81.9–100%)
Specificity (95% CI) 98.9% (97.8–100%) 98.9% (97.8–100%) 99.6% (99.0–100%)
Accuracy (95% CI) 94.7% (94.3–95.0%) 96.3% (95.9–96.7%) 99.3% (99.1–99.5%)
Youden’s index 0.18 0.49 0.93
Intraclass correlation coefficient 0.21 0.69 0.95
  1. CI confidence interval, CT computed tomography
  2. aAxial and coronal scanning
  3. b The sensitivity was significantly lower than that of “X-ray + CT + 3D reconstruction” (P < 0.001)
  4. c The sensitivity was significantly lower than that of “X-ray + CT + 3D reconstruction” (P = 0.016)