Publications by authors named "Cale A Pagan"
Background: Compromised function is a common reason for patient dissatisfaction after total knee arthroplasty. However, objectively evaluating function often requires costly, time-consuming, and highly specialized data collection and analysis in a dedicated motion analysis laboratory. To overcome this practical barrier, we developed a radiographic-based method to quantify knee joint moments in routine clinical care and to explore the relationship between knee moments in the sagittal plane and the Knee Osteoarthritis Outcomes Score for Joint Replacement (KOOS JR).
View Article and Find Full Text PDFBackground: Robotic arm assisted total knee arthroplasty (RA-TKA) aims to improve accuracy in bone resection, implant positioning, and joint alignment compared to manual TKA (M-TKA). However, the learning curve of RA-TKA can disrupt operating room efficiency, increase complications, and raise costs. This study examines the operative time learning curve of RA-TKA using a single robotic system.
View Article and Find Full Text PDFTechnology in Total Knee Arthroplasty in 2023.
J Arthroplasty
September 2024
Article Synopsis
- Total knee arthroplasty technology has progressed significantly, moving from manual tools to advanced technologies like smart tools, robotics, and computer navigation for better precision in surgery.
- This review examines the latest innovations in the field and discusses the challenges and solutions associated with implementing these advanced technologies.
- Additionally, the review explores the limitations of current technologies in total knee arthroplasty to understand the areas that still need improvement.
Knowledge of the relationship between the hip and spine is essential in the effort to minimize instability and improve outcomes following total hip arthroplasty (THA). A detailed yet straightforward preoperative imaging workup can provide valuable information on pelvic positioning, which may be helpful for optimum placement of the acetabular cup. For a streamlined preoperative assessment of THA candidates, classification systems with a capacity for providing a more personalized approach to performance of THA have been introduced.
View Article and Find Full Text PDFArticle Synopsis
- Patients with spinal deformities and stiff spines undergoing total hip arthroplasty (THA) are at a high risk of dislocation, making preoperative planning essential for optimal component placement.
- A study of 4,731 THA procedures over nine years focused on 281 patients classified as hip-spine 2B, revealing an overall dislocation rate of 4.3% and changes in surgical practices that significantly impacted outcomes.
- By shifting acetabular planning from the supine to standing position and adjusting femoral head sizes used, dislocation rates dropped notably from 6.8% to 1.5%, demonstrating the effectiveness of advanced planning and intraoperative technologies.
Article Synopsis
- - The study investigates the bone mineral density (BMD) in the proximal tibia of total knee arthroplasty (TKA) patients, focusing on how density changes around the tibial cut, with a sample of 92 patients (42 women and 50 men), all of whom had preoperative scans.
- - Results show that BMD decreases from the upper to lower sections around the tibial cut, with significant differences based on age and sex, particularly older women having lower BMD than those aged 60-70.
- - The findings suggest that while age and sex may indicate BMD levels, clearer guidelines for determining BMD thresholds for cementless implants are still needed, highlighting a gap for further research.
Background: Individualized alignment techniques have gained major interest in an effort to increase satisfaction among total knee arthroplasty patients. This study aimed to compare postoperative alignment between kinematic alignment (KA) and mechanical alignment (MA) and assess whether KA significantly deviates from the principle of aligning the limb as close to neutral alignment as possible.
Methods: There were 234 patients who underwent robotic-assisted total knee arthroplasty using an unrestricted KA and a strict MA technique (KA: 145, MA: 89).
Article Synopsis
- The study investigates the geographic variations in knee phenotypes using the Coronal Plane Alignment of the Knee (CPAK) Classification, proposing nine distinct types based on limb alignment.
- A systematic review of seven studies involving nearly 6,000 knees revealed significant differences in the distribution of knee phenotypes across regions, particularly between healthy and arthritic knees.
- The findings suggest that knee phenotype variations could inform personalized approaches in orthopedic treatments, highlighting the need for further research into demographic factors such as race and sex.