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Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
Published on: February 27, 2018
Digital templating facilitates accurate leg length correction in total hip arthroplasty
Shivan Sabah Jassim1, Christopher Ingham, Matthew Keeling
1Department of Trauma & Orthopaedics, Norfolk and Norwich University Hospital NHS Foundation Trust, Norwich, Norfolk, UK. shivan.jassim@doctors.org.uk
Acta Orthopaedica Belgica
|July 25, 2012
Summary
Digital templating before total hip arthroplasty (THA) accurately predicts implant size and corrects leg length discrepancy (LLD). This study supports its use for improved surgical preparation and outcomes in THA patients.
Area of Science:
- Orthopedic Surgery
- Radiology
- Biomedical Engineering
Background:
- Pre-operative digital templating is crucial for total hip arthroplasty (THA).
- Its efficacy in correcting leg length discrepancy (LLD) requires further investigation.
- Accurate templating minimizes complications and optimizes implant selection.
Purpose of the Study:
- To evaluate the accuracy of digital templating in predicting implant sizes for THA.
- To assess the effectiveness of digital templating in correcting pre-operative leg length discrepancy (LLD).
- To correlate pre-operative templated LLD with post-operative measurements.
Main Methods:
- Retrospective analysis of 59 primary THA patients.
- Comparison of templated versus actual implant sizes (femoral offset, stem, acetabular cup).
- Measurement of pre-operative LLD and post-operative correction via radiographs.
Main Results:
- High correlation found between templated and implanted sizes (femoral offset 0.850, stem 0.709, acetabular cup 0.834; p < 0.01).
- Strong correlation between pre-operative templated LLD and post-operative corrected LLD (0.841; p < 0.01).
- No significant differences noted between hybrid and cemented THA or with contralateral hip replacement.
Conclusions:
- Digital templating is highly accurate for predicting THA implant sizes.
- Pre-operative digital templating effectively facilitates correction of leg length discrepancy (LLD).
- The findings support the routine use of digital templating in THA planning.
