Aug 3–9, 2026 · 12 new studies, 10 reviews · Adult Reconstruction archive · All weeks
The new Adult Reconstruction research The Reduction sent the week of Aug 3–9, 2026, with the week’s most recent reviews, each with a one-line summary.
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In a retrospective review of unresurfaced-patella TKAs, posterior-stabilized implants had significantly higher postoperative crepitus rates than cruciate-retaining designs (12.3% vs 5.7%), though most cases remained asymptomatic.
Analysis of 85,604 CT scans found that kinematically aligned femoral component placement often causes trochlear groove malpositioning and excessive internal rotation, suggesting current implants need alignment-specific redesign to reduce patellar maltracking risk.
Increased risk of early failure of multiply revised total hip arthroplasty.
In 845 aseptic revision THAs, early re-revision (mostly for instability) was most common in the first two years, and while unadjusted risk rose with revision number, this was not independently significant after adjustment—underscoring the importance of early risk mitigation.
A history of keloids nearly doubles the risk of arthrofibrosis after TKA, though revision rates were unaffected, useful for preoperative counseling.
This meta-analysis of ~96,000 THA/TKA patients found GLP-1 receptor agonist use was associated with lower 90-day surgical/medical complications and readmissions, particularly after THA.
In a survey of TKA patients, 75-76% resumed hunting or fishing within about 6 months postoperatively, and 93% would recommend TKA to others wanting to return to these activities, useful for preoperative counseling.
Robotic-assisted UKA-to-TKA conversion used fewer revision stems, less constrained polyethylene, shorter surgical time, and lower cost than manual conversion.
In robot-assisted THA, predictors of reaching a patient-acceptable symptom state varied by outcome measure used, with spinopelvic mismatch, low back pain, and Tönnis grade 3 consistently influential—supporting personalized outcome assessment.
Radiographic analysis of 167 knees showed palpable ankle landmarks (malleoli) reliably correlate with tibial mechanical axis, offering a technology-free way to set safe tibial coronal alignment limits (~4.8° varus/4.2° valgus) in TKA.
In matched THA/TKA cohorts, joint-specific PROM improvements correlated moderately with physical health but only weakly with mental health and quality of life, supporting PROMs' value in capturing overall health impact of arthroplasty.
In ONFH, combined MRI-based volumetric and depth indices (central depth, necrotic depth, necrotic volume ratios) independently predicted femoral head collapse and improved risk stratification (AUC 0.84) beyond standard radiographic classification.
In 479 robotic-arm-assisted TKAs, restoring posterior condylar offset and joint-line position correlated with better pain relief and functional outcomes, suggesting these should guide sagittal alignment planning.
The Effect of Femoral Component Flexion in Total Knee Arthroplasty.
This review finds 0°-3° femoral component flexion in TKA may improve knee biomechanics and flexion while excessive flexion worsens outcomes, though robust clinical evidence and optimal robotic-assisted alignment remain needed.
Fixation Versus Acute Total Hip Arthroplasty for Acetabular Fracture: A Cost-Effectiveness Analysis.
A cost-effectiveness model of acetabular fracture treatment found ORIF more cost-effective under age 68, while acute total hip arthroplasty was more cost-effective at age 68 and older.
Not all Costs Are Created Equal: What Are the Types of Costs and Why Do They Matter?
This review clarifies that arthroplasty 'costs' can mean provider costs, payer costs, or societal costs, and surgeons must understand these distinctions to correctly interpret economic analyses in value-based care.
This review finds that strong clinical evidence on femoral neck fracture treatment (THA vs HA, cemented vs uncemented, fixation vs arthroplasty, operative vs nonoperative) is often not reflected in national registry practice trends, indicating slow evidence implementation.
A New Classification System for Cementless Femoral Stems in Total Hip Arthroplasty.
The authors propose a new brand-neutral classification for cementless femoral stems based on geometry, modularity location, and length to standardize reporting and comparisons.
Interprosthetic Femur Fractures: A Review Article.
This review outlines the rising incidence, high morbidity, and lack of treatment consensus for interprosthetic femur fractures, emphasizing goals of stable fixation and early mobilization.
The Use of Metaphyseal Cones and Sleeves in Revision Total Knee Arthroplasty.
This review covers metaphyseal cones and sleeves for managing bone loss in revision TKA, comparing design types, manufacturers, and clinical outcomes to guide preoperative planning.
The Impact of Psychological Factors and Their Treatment on the Results of Total Knee Arthroplasty.
Psychosocial factors like anxiety, kinesiophobia, and central sensitization predict worse TKA outcomes, and preoperative CBT or duloxetine may help but need further study.
Smoking Cessation Initiatives in Total Joint Arthroplasty: An Evidence-Based Review.
A 4-week preoperative smoking cessation program meaningfully reduces complications after total joint arthroplasty and is cost-effective, though longer cessation and postoperative interventions may further help.
Hip Arthroplasty in Patients with Osteogenesis Imperfecta.
Review argues that hip arthroplasty in osteogenesis imperfecta patients is technically challenging but often needed early in life, with modern uncemented implants possibly improving survivorship despite frequent revisions.
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