Publications by authors named "Allen A Yazdi"

Purpose: To evaluate the utility of implanting biointegrative cannulated nails in a rafter arrangement within the tibial plateau or femoral condyle for treatment of subchondral insufficiency of the knee.

Methods: Patients were followed for 12 months after surgical intervention for subchondral insufficiency using biointegrative, fiber-reinforced fixation nails. Patients (ages 18-75 years) had moderate knee pain for at least 6 months, unicompartmental Kellgren-Lawrence grade 2-3 and bone marrow lesions confirmed on magnetic resonance imaging (MRI).

View Article and Find Full Text PDF

Objective: Cosmesis of surgical incisions can greatly impact postoperative patient satisfaction. This study aimed to compare the rate and overall cosmetic improvement of orthopaedic surgical incisions between conventional suture closure and a novel skin closure device.

Method: In this single-blind, randomised, prospective controlled trial, a consecutive series of patients undergoing orthopaedic sports medicine procedures of the knee, shoulder and elbow were randomised to undergo wound closure via either conventional suture or a micro-anchor skin closure device (BandGrip; BandGrip, US).

View Article and Find Full Text PDF

Background: Damage to the joint surface, which affects articular cartilage and the underlying subchondral bone, is a common cause for significant knee pain and disfunction. The use of CartiHeal Agili-C, a cell-free aragonite-based implant, is an emerging option for patients who may otherwise be a poor candidate for allograft transplantation or within geographic areas where there is a limited availability of donor tissue.

Indications: The CartiHeal Agili-C implant is indicated for patients with an International Cartilage Repair Society grade III or IV lesion with a total treatable area of 1 to 7 cm and without severe osteoarthritis.

View Article and Find Full Text PDF

Focal articular cartilage injuries of the knee are common and can be challenging to manage. To appropriately counsel and indicate patients for treatment, having a complete understanding of a patient's symptoms, goals for treatment, activity level, physical examination, and imaging findings is critical. Conservative measures, including activity modification, anti-inflammatory medication, physical therapy, and injections can result in substantial symptom relief.

View Article and Find Full Text PDF

Background: Primary osteochondral allograft transplantation (OCA) of the knee has been shown to improve patient-reported outcome measure (PROM) scores at various follow-up time points. However, studies analyzing the effects of patient sex on primary OCA outcomes remain limited and show conflicting results.

Purpose: To compare PROM scores and clinically significant outcome (CSO) achievement rates at a minimum 5-year follow-up between male and female patients who underwent primary OCA of the knee.

View Article and Find Full Text PDF

Background: The proximal humerus is the second-most common anatomic site for osteonecrosis, a condition of disrupted blood supply leading to death of bone tissue, with resultant shoulder pain and dysfunction. Core decompression is a viable joint-preserving surgical intervention that aims to improve local blood supply and restore bone health prior to bony collapse.

Indications: Humeral head osteonecrosis has numerous underlying causes, most commonly the sequelae of prior trauma, chronic use of systemic corticosteroids, sickle cell disease, and alcohol abuse.

View Article and Find Full Text PDF

Background: Previous studies have observed promising short-term outcomes after revision osteochondral allograft (OCA) transplantation. However, few studies have examined midterm outcomes after revision OCA transplantation.

Purpose: To examine midterm outcomes after revision OCA transplantation of the femoral condyle and evaluate reoperation and survivorship compared with a matched cohort of patients who underwent primary OCA transplantation.

View Article and Find Full Text PDF

Purpose: To establish consensus statements via a modified Delphi process about ethics, transparency, regulation, and best practices for the use of orthobiologics in clinical practice for musculoskeletal pathology.

Methods: A consensus process on the regulation of orthobiologics at the provider level was conducted using a modified Delphi technique. Twenty orthopaedic surgeons, sports medicine physicians, or basic scientists participated.

View Article and Find Full Text PDF

Background: Mismatch between osteochondral allograft (OCA) donor and recipient sex has been shown to negatively affect outcomes. This study accounts for additional donor variables and clinically relevant outcomes.

Purpose: To evaluate whether donor sex, age, donor-recipient sex mismatch, and duration of graft storage affect clinical outcomes and failure rates after knee OCA transplantation.

View Article and Find Full Text PDF
Article Synopsis
  • - The study aimed to measure the biomechanical stability of two fixation methods (suture button and suture tape cerclage) for anterior glenoid bone grafts, comparing hand tensioning to device tensioning.
  • - Researchers tested artificial bone blocks and recorded how much displacement occurred under various forces while using a cyclic loading protocol.
  • - Results showed that device tensioning provided significantly better stability than hand tensioning for both methods, particularly at forces over 100 N, with suture buttons performing better than suture tape at higher loads.
View Article and Find Full Text PDF

Purpose: To compare the differences between men and women who receive primary osteochondral allograft transplantation of the knee with regard to preoperative disease presentation, failures and reoperations.

Methods: A retrospective review of patients ≥18 years old who underwent primary osteochondral allograft transplantation between 2002 and 2020 by a single surgeon with a minimum of 2-year follow-up was performed. Demographic, preoperative, intraoperative and postoperative data were collected for all included patients.

View Article and Find Full Text PDF
Article Synopsis
  • A study was conducted to evaluate the effects of injecting autologous bone marrow aspirate concentrate (BMAC) during arthroscopic partial meniscectomy (APM) in patients with meniscal tears and mild knee osteoarthritis (OA), as there had been little prior research on this combined treatment.
  • Patients were randomly assigned to receive either the BMAC injection or no injection during surgery, with the main goal of comparing knee function and radiographic results one year post-operation.
  • The findings showed no significant differences in patient-reported outcomes or radiographic results between the two groups after the surgery, suggesting that adding BMAC may not offer additional benefits in this context.
View Article and Find Full Text PDF

Articular cartilage defects in the knee are common in athletes who have a variety of loading demands across the knee. Athletes of different sports may have different baseline risk of injury. The most studied sports in terms of prevalence and treatment of cartilage injuries include soccer (football), American football, and basketball.

View Article and Find Full Text PDF

Purpose: To assess the current scientific literature on the microbiome's relation with knee osteoarthritis (OA), with specific focuses on the gut microbiome-joint axis and joint microbiome-joint axis.

Methods: A systematic review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines; the PubMed, Embase, and Cochrane databases were searched for relevant English-language clinical studies on the gut and/or joint microbiomes' association with knee OA in humans. Bias was evaluated using the Methodological Index for Non-randomized Studies score.

View Article and Find Full Text PDF

Purpose: To report the clinical outcomes of arthroscopic debridement for the treatment of Kellgren-Lawrence (KL) grade I and II (mild) and III (moderate) knee osteoarthritis (OA) at a minimum 1-year follow-up.

Methods: A systematic review of primary literature was performed in concordance with Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines using the Medline, Embase, and Cochrane databases for studies regarding arthroscopic debridement/chondroplasty for management of knee OA at a minimum 1-year follow-up. Studies were included if they included KL grades I to III or dichotomized clinical outcomes by KL grade.

View Article and Find Full Text PDF

Purpose: To evaluate the clinical and radiographic outcomes of patients who have undergone bioabsorbable screw fixation for intact, stable grade I and II osteochondritis dissecans (OCD) lesions for which at least 6 months of conservative management has failed.

Methods: A retrospective review of prospectively collected data from a single institution was performed to identify patients who underwent internal fixation of stable grade I and II OCD lesions (according to the Guhl classification) between January 2010 and January 2020. Patients were included regardless of the presence of concomitant procedures.

View Article and Find Full Text PDF

The field of orthobiologics is rapidly evolving, offering clinicians a shift in treatment from symptom relief to the potential for disease modification and tissue repair. These agents, derived from autologous tissues, components of blood, and growth factors, are used as surgical adjuncts or as standalone treatments. Their clinical applications are expanding to encompass a variety of conditions, supported by a growing base of research efforts.

View Article and Find Full Text PDF
Article Synopsis
  • The study examines the effectiveness of osteochondral allograft reconstruction for two types of shoulder joint injuries: Hill-Sachs (HS) and Reverse Hill-Sachs (RHS) lesions, which can arise from instability and dislocation of the joint.
  • A systematic review of eight studies involving 84 patients was conducted, revealing different outcomes for HS and RHS lesions in terms of range of motion and complication rates.
  • Results indicated that HS patients generally had better postoperative outcomes and lower complication rates (20.5%) compared to RHS patients (42.5%), although graft resorption rates were similar for both types of lesions.
View Article and Find Full Text PDF

Objectives: To determine potential factors influencing female medical students' interest and subsequent application to orthopedics, and to evaluate female and male medical students' perceptions of women in the field of orthopedics.

Methods: An institutional review board-approved survey was distributed in March 2020 and subsequently in April 2022 to medical students in the classes of 2023 and 2024 at the University of Alabama at Birmingham Heersink School of Medicine. Study data were collected and managed using REDCap electronic data capture.

View Article and Find Full Text PDF

Parkinson's disease (PD) is a neurodegenerative disorder characterized by fibrillar neuronal inclusions composed of aggregated α-synuclein (α-syn). These inclusions are associated with behavioral and pathological PD phenotypes. One strategy for therapeutic interventions is to prevent the formation of these inclusions to halt disease progression.

View Article and Find Full Text PDF