In Vitro Evaluation of a Device to Assess Acetabular Cup Position by Sagittal Plane Radiography
🔍 Key Findings
- CPAD accurately measured angle of lateral opening (ALO) on sagittal radiographs with near-perfect agreement (Lin’s Rc = 0.994) compared with known angles.
- No significant difference between measured and true ALO values was detected (p = 0.655), supporting accuracy of the device for this parameter.
- Mean ALO measurement error was only 0.14° ± 1.18°, indicating high precision of the CPAD method.
- Open-face version measurements were significantly inaccurate compared with known values (p < 0.0001).
- Mean error in version measurement was 9.5° ± 6.31°, showing only moderate agreement (Rc = 0.424).
- Measurement error in version likely resulted from radiographic superimposition of the V-axis bar with the cup edge, making bar endpoints difficult to identify.
- CPAD accuracy for ALO (~1.18°) is nearly five times better than previous radiographic techniques, which typically achieve ~5° accuracy.
- Intraoperative fluoroscopic use of CPAD may allow real-time adjustment of cup orientation, potentially reducing luxation risk after canine THA.
Simini Surgery Review Podcast
🔍 Key Findings
- CPAD accurately measured angle of lateral opening (ALO) on sagittal radiographs with near-perfect agreement (Lin’s Rc = 0.994) compared with known angles.
- No significant difference between measured and true ALO values was detected (p = 0.655), supporting accuracy of the device for this parameter.
- Mean ALO measurement error was only 0.14° ± 1.18°, indicating high precision of the CPAD method.
- Open-face version measurements were significantly inaccurate compared with known values (p < 0.0001).
- Mean error in version measurement was 9.5° ± 6.31°, showing only moderate agreement (Rc = 0.424).
- Measurement error in version likely resulted from radiographic superimposition of the V-axis bar with the cup edge, making bar endpoints difficult to identify.
- CPAD accuracy for ALO (~1.18°) is nearly five times better than previous radiographic techniques, which typically achieve ~5° accuracy.
- Intraoperative fluoroscopic use of CPAD may allow real-time adjustment of cup orientation, potentially reducing luxation risk after canine THA.
Simini Surgery Review Podcast
Know What Matters in the Literature - and Why
We distill peer-reviewed surgical studies into clinically relevant summaries and
exam-style questions, so you can make informed decisions with confidence.
Free Access. No Spam. Just Smarter Surgical Learning
Multiple Choice Questions on this study
Access the full library of surgical summaries and exam-style questions.
Educational content developed independently and supported by Simini.
The maker of Simini Protect Lavage.