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Stress distributions of the short stem and the tapered wedge stem at different alignments: a finite element analysis study
BackgroundThe mechanical effects of stem length reduction and stem alignment on the surrounding femur remain unknown. This study directly compared...
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A double tapered fully hydroxyapatite-coated stem has less contact area to femoral cortical bone than a tapered-wedge stem: a three-dimensional computed tomography-based density map** analysis
IntroductionIt is clinically important to analyze the initial contact state between an implant and femoral cortical bone as it affects clinical...
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Is bone remodelling around fully hydroxyapatite-coated and tapered-wedge stems related to the stem fixation pattern?
PurposeThis study aimed to compare bone mineral density (BMD) changes around the femoral component after total hip arthroplasty (THA) in a fully...
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Finite element analysis of mechanical stress in a cementless tapered-wedge short stem in the varus position
BackgroundIn recent years, the use of tapered-wedge short stems has increased due to their ability to preserve bones and tendons. Surgical techniques...
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Survival and performance of a dual tapered-wedge fully HA-coated press fit femoral stem
IntroductionFully hydroxyapatite-coated titanium alloy double-tapered stems have been successful implant designs for THA. The Novation Element Stem...
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Tapered wedge stems decrease early postoperative subsidence following cementless total hip arthroplasty in Dorr type C femurs compared to fit-and-fill stems
BackgroundTo compare the degree of stem subsidence between two different femoral component designs and to determine the risk factors associated with...
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Comparison of tapered-wedge short and standard-length femoral stems in single-stage bilateral direct anterior total hip arthroplasty
PurposeThis study was performed to compare short and standard-length tapered-wedge-type femoral stems in single-stage bilateral total hip...
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Difference in tapered wedge stem alignment between supine and lateral position in cementless total hip arthroplasty via modified Watson-Jones anterolateral approach
BackgroundWhether different body positions during surgery affect postoperative stem alignment in total hip arthroplasty (THA) remains unclear. The...
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Risk factors of thigh pain following total hip arthroplasty with short, tapered-wedge stem
PurposeThe occurrence of thigh pain following cementless total hip arthroplasty (THA) may be dependent on multiple factors, which may differ with...
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Analysis on association between sagittal stem alignment and early functional and radiological outcome following primary cementless total hip replacement
IntroductionAccurate reconstruction of hip anatomy and biomechanics is mandatory for achieving good clinical outcomes following total hip replacement...
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The assessment of canal flare index and proximal femoral bone density can improve stem selection for peri-prosthetic bone maintenance after total hip arthroplasty
IntroductionBone maintenance after total hip arthroplasty (THA) is important for implant success. This study aimed to investigate the relationship...
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Peri-prosthetic bone remodeling of hydroxyapatite-coated compaction short stem was not affected by stem alignment
BackgroundTo improve implant survival through accelerated early bone remodeling during total hip arthroplasty (THA), hydroxyapatite (HA) is widely...
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Which stem in total hip arthroplasty for developmental hip dysplasia? A comparative study using a 3D CT-based software for pre-operative surgical planning
BackgroundStem choice in total hip arthroplasty (THA) for hip dysplasia is still controversial. The aims of the study were to evaluate (1) which stem...
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Fully hydroxyapatite-coated compaction broached and triple-tapered stem may reduce the risk of stress shielding after primary total hip arthroplasty
PurposeChanges in bone mineral density (BMD) around the fully hydroxyapatite (HA)-coated compaction broached and triple-tapered stem, namely,...
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Hydroxyapatite-coated compaction short stem represents a characteristic pattern of peri-prosthetic bone remodelling after total hip arthroplasty
PurposeWe aimed to investigate the differences in peri-prosthetic bone remodelling between the full hydroxyapatite (HA)-collared compaction short...
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The cementless taper wedge vs. fit-and-fill stem in primary total hip arthroplasty: risk of stem-related complication differs across Dorr types
IntroductionThe choice between a cementless taper wedge stem and a fit-and-fill stem in total Hip arthroplasty (THA) for various proximal femoral...
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Stem anteversion is not affected by proximal femur geometry in robotic-assisted total hip arthroplasty
BackgroundIn the present study, the surgeon aimed to align the stem at 5° to 25° in anteversion. The robotic technology was used to measure stem...
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Does difference in stem design affect accuracy of stem alignment in total hip arthroplasty with a CT-based navigation system?
The efficacy of a computed tomography (CT)-based navigation system to accurately position the stem for intended alignment is unclear. In addition,...
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Shape-memory sawtooth-arm embracing clamp used in complex femoral revision hip arthroplasty for stem stability: average 9-year follow-up study
BackgroundNickel-Titanium shape-memory sawtooth-arm embracing clamps (SSECs) have been used in revision total hip arthroplasties (rTHAs) to protect...
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Treatment of femoral neck fractures using actis stem: complication rate in 188 uncemented hemiarthroplasties
IntroductionCemented hemiarthroplasty (HA) is preferred in treating dislocated femoral neck fractures in elderly, osteoporotic patients, since...
