Publications by authors named "Scott Lavalva"

Background: Weight optimization methods in morbidly obese patients with a body mass index (BMI) of ≥40 kg/m2 undergoing total knee arthroplasty (TKA) have shown mixed results. The purpose of this study was to evaluate the effect of perioperative use of glucagon-like peptide-1 receptor agonists (GLP-1 RAs) in patients with a BMI of ≥40 kg/m2 undergoing primary TKA.

Methods: Using an administrative claims database, patients with morbid obesity undergoing primary TKA were stratified into GLP-1 RA use for 3 months before and after the surgical procedure (treatment group) and GLP-1 RA non-use (control group), and were matched on the basis of patient age, gender, diagnosis of type-2 diabetes mellitus, and Charlson Comorbidity Index (CCI).

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Background: Morbid obesity negatively affects outcomes after total hip arthroplasty (THA). The optimal strategy for weight loss before THA has not been identified. Recently, glucagon-like peptide-1 receptor agonists (GLP-1 RA) have become increasingly popular as an effective pharmacologic weight loss agent.

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Article Synopsis
  • The study examined complications following outpatient total hip arthroplasty (THA) by analyzing data from the National Surgical Quality Improvement Program database between 2012 and 2019, focusing on the timing of such complications.
  • It found that for various complications, the median days of diagnosis post-surgery varied, with some issues like stroke and myocardial infarction occurring earlier compared to infections and readmissions.
  • While outpatients showed a lower risk for certain complications like readmission and surgical site infections, both outpatient and inpatient procedures had similar timing for complications, suggesting a need for earlier diagnostic testing in outpatient cases during identified risk periods.
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Background: The growing adoption of robotic-assistance during total hip arthroplasty (THA) has provided novel means through which a patient's anatomy and dynamic spinopelvic relationship can be incorporated into surgical planning. However, the impact of enhanced technologies on intraoperative decision-making and changes to component positioning has not yet been described.

Methods: A multicentre, prospective study included 105 patients (52% women) patients who underwent robotic-assisted THA with the integration of software that incorporates a patient's pelvic tilt (PT) and virtual range-of-motion (VROM) for impingement modeling.

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Background: Given the heightened risk of postoperative complications associated with obesity, delaying total hip arthroplasty (THA) in patients who have a body mass index (BMI) > 40 to maximize preoperative weight loss has been advocated by professional societies and orthopaedic surgeons. While the benefits of this strategy are not well-understood, previous studies have suggested that a 5% reduction in weight or BMI may be associated with reduced complications after THA.

Methods: We identified 613 patients who underwent primary THA in a single institution during a 7-year period and who had a BMI >40 recorded from 9 to 12 months prior to surgery.

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Background: Plain radiographs remain the standard for diagnosing osteoarthritis (OA). Total hip arthroplasty (THA) is generally offered only for advanced OA by plain radiographs. Advanced imaging is used as an adjunct to assess OA severity in cases of progressive symptoms with less advanced OA by plain radiographs.

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Background: Body mass index (BMI) cutoffs for morbidly obese patients otherwise indicated for total knee arthroplasty (TKA) have been widely proposed and implemented, though they remain controversial. Previous studies suggested that a 5% reduction in BMI may be associated with fewer postoperative complications. Thus, the purpose of this study was to determine whether a substantial reduction in preoperative BMI in morbidly obese patients improved 90-day outcomes after TKA.

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Aims: Professional dancers represent a unique patient population in the setting of hip arthroplasty, given the high degree of hip strength and mobility required by their profession. We sought to determine the clinical outcomes and ability to return to professional dance after total hip arthroplasty (THA) or hip resurfacing arthroplasty (HRA).

Methods: Active professional dancers who underwent primary THA or HRA at a single institution with minimum one-year follow-up were included in the study.

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Background: The use of computer navigation or robotic assistance during primary total hip arthroplasty (THA) has yielded numerous benefits due to more accurate component positioning. The utilization of these tools is generally associated with longer operative times and also necessitates additional surgical equipment and personnel in the operating room. Thus, the aim of this study was to evaluate the impact of technology assistance on periprosthetic joint infection (PJI) after primary THA.

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Background: During the initial coronavirus pandemic lockdown period, remote hip and knee arthroplasty care was heavily employed out of necessity. However, data on patient satisfaction with telemedicine specific to hip and knee arthroplasty patients remains unknown.

Methods: All patients who had a telemedicine visit in the hip and knee arthroplasty department and completed a telemedicine satisfaction survey at a specialty hospital from April 1, 2020, to December 31, 2020, were identified.

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Background: There is significant debate regarding the indications of staged surgery for severe adolescent spinal deformity, and the factors associated with the decision to perform staged compared to same-day surgery have not been previously investigated. Thus, the purpose of this study was to determine which factors were most strongly associated with this decision.

Methods: A prospective multicenter registry of adolescent patients with severe spinal deformity was reviewed.

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Background: The use of technology during total knee arthroplasty (TKA) has been associated with more accurate component position and less blood loss. Yet to date, the risk of developing prosthetic joint infection (PJI) associated with computer navigation (CN) or robotic assistance (RA) has not been thoroughly evaluated. This study used propensity score-matching (PSM) in a large cohort of primary TKA patients to compare the rate of PJI following conventional TKA (TKA) versus CN-TKA and RA-TKA.

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The purpose of this study was to evaluate the efficacy of combined patellofemoral arthroplasty (PFA) and medial patellofemoral ligament (MPFL) reconstruction in patients with patellofemoral arthritis in the setting of concomitant patellar instability. Patients who underwent single-stage, combined PFA and MPFL reconstruction by a single surgeon at a tertiary-care orthopaedic center between 2016 and 2021 were identified. Postoperative radiographic and clinical outcomes at a minimum of 6 months were recorded using patient-reported outcome measures, including International Knee Documentation Committee (IKDC), Kujala, and VR-12.

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Objectives: The sagittal plane of the distal tibia has not been well-described. This study sought to characterize sagittal plane morphology, determine symmetry from side to side, and identify differences based on hindfoot alignment.

Methods: One hundred twelve bilateral lateral weight-bearing ankle radiographs were retrospectively evaluated (224 ankles).

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Introduction: An understanding of the sagittal plane morphology of the humerus is relevant during surgical fixation of humeral fractures but is not well described in the literature. The purpose of this study was to better characterize the native sagittal plane morphology of the humerus.

Materials And Methods: 170 patients with uninjured full length lateral humerus radiographs were retrospectively evaluated.

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The interest in ambulatory total hip arthroplasty (THA) has increased recently due to a national focus on value-based care and improved rapid recovery protocols. We sought to determine if surgical approach had an effect on discharge outcomes in outpatient THA. We performed a retrospective cohort study examining patients who underwent unilateral THA at a single institution using a standardized perioperative care pathway who were discharged home within 24 hours.

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Article Synopsis
  • A study was conducted to compare the effectiveness of junior and senior orthopaedic surgery residents in treating pediatric distal radius fractures (DRFs) through closed reduction and casting.
  • The results showed that both junior and senior residents had similar success rates in achieving acceptable initial reductions, with 82% and 79% success, respectively, and a comparable rate of loss of reduction.
  • However, first-time reductions during a rotation were linked to a higher risk of losing the correction, indicating that new residents should receive extra supervision early on.
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Article Synopsis
  • The study developed a shorthand algorithm for determining bone age using knee MRIs, aiming to increase efficiency and reduce the costs and risks associated with traditional radiographic methods.
  • It involved adolescent patients who had both knee MRIs and hand radiographs, with results showing a strong correlation between the shorthand algorithm's predictions and conventional hand bone age assessments, regardless of the raters' experience levels.
  • The algorithm proved to be reliable, with good interrater agreement, suggesting that it can be effectively utilized by medical students, residents, and attending physicians in clinical settings.
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Study Design: Retrospective case-control.

Objective: To identify a cohort of patients with persistent coronal imbalance (CIB) or revision surgery 5 years following fusion to an L3 lowest-instrumented-vertebra (LIV) and determine factors that make an L3 LIV high-risk. In surgical planning for AIS, L3 is chosen over L4 whenever possible to maximize motion segments below the LIV.

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Purpose: Distal radius fractures (DRFs) are common pediatric injuries typically treated with closed reduction and casting. A substantial number of these fractures fail nonsurgical management, occasionally requiring surgical intervention. Risk factors associated with an unsuccessful initial closed reduction (UIR) attempt or loss of reduction (LOR) after a successful closed reduction remain poorly characterized.

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Study Design: Retrospective case-control study.

Objective: The aim of this study was to identify the risk factors and health-related quality of life (HRQoL) impact of severe (> 4 cm) post-operative coronal imbalance at 2 years following posterior spinal fusion (PSF) for adolescent idiopathic scoliosis (AIS). Coronal imbalance is an unfavorable outcome following PSF for AIS, though the degree of imbalance in such patients is typically mild.

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Study Design: It is a retrospective cohort study.

Objectives: To compare the radiographic and clinical outcomes of serial body casting for infantile idiopathic scoliosis (IIS) with versus without the use of general anesthesia (GA). Serial body casting for IIS has traditionally been performed under GA.

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Background: Instrumented spinal fusion is performed to correct severe spinal deformity that commonly complicates cerebral palsy (CP). Prolonged intubation (PI) is a common perioperative complication, though little is known about the risk factors and consequences of this phenomenon.

Questions/purposes: The purpose of this study was to determine (1) the preoperative and intraoperative risk factors associated with PI after spine surgery for CP; (2) the perioperative and postoperative complications associated with PI; and (3) any long-term impacts of PI with respect to health-related quality of life.

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Background: The primary goal in managing early-onset scoliosis (EOS) is delaying/preventing surgical intervention while allowing improved spinal growth and chest wall and lung development to improve life expectancy. The effectiveness of serial casting for patients with neuromuscular and syndromic EOS is unclear.

Methods: Patients from 2 multicenter registries who underwent serial casting for nonidiopathic scoliosis (NIS) were reviewed retrospectively.

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Septic arthritis of the hip is a common and potentially devastating condition in children. Septic arthritis is most commonly caused by Staphylococcus aureus, but other pathogens should be considered on the basis of patient age and presence of risk factors. Diagnosis of septic arthritis is based on history and physical examination, laboratory tests, radiographs, ultrasound, and arthrocentesis.

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