We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Is diaphyseal fixation of short neck-retaining stem prostheses related to the size of the implant?
- Authors
Pons-Cabrafiga, Miquel; Arias de la Torre, Jorge; Berlanga-de-Mingo, Daniel; Lobo-Escolar, Luis
- Abstract
Introduction: Short-stem hip prostheses present variable proximal femoral bone radiological findings. The aims of this study were to analyse, in our patients with implanted collum femoris-preserving (CFP) stems, cancellous bone remodelling, cortical distal hypertrophy and pedestal formation, and the relationship between those radiological changes that suggest distal fixation with the size of the stem. Methods: From October 2001 to December 2012 a total of 199 consecutive primary total hip arthroplasties in 180 patients were performed at our department using the CFP stem and followed up for a minimum of 5 years until December 2017. Results: Stress shielding was present in 74% of oversized stems cases, but in normal or undersized stems, stress shielding was present in 8.5%. Cortical hyperthrophy was observed in 49% of the oversized stems and in 6% of the normal or undersized ones. Finally, non-statistically significant differences (p = 0.089) in pedestal formation were found, present in 16.3% of the oversized stems and in 6% of normal or undersized ones. Conclusions: Oversized stems cause more stress shielding and distal cortical hypertrophy in the distal part of the stem, which indicates distal fixation in bigger sizes of stem.
- Subjects
FEMUR radiography; BONE shafts; PHYSIOLOGICAL stress; TOTAL hip replacement; HYPERTROPHY; FEMUR neck; ARTIFICIAL joints; TREATMENT effectiveness; FRACTURE fixation; BONE remodeling; DESCRIPTIVE statistics
- Publication
Hip International, 2021, Vol 31, Issue 2, p196
- ISSN
1120-7000
- Publication type
Article
- DOI
10.1177/1120700020932937