Publications by authors named "Usama Hamdan"

Objective: Buccal myomucosal flap procedures have become a critical tool in the armamentarium of the cleft surgeon. Mastering this technique is complex and providing sufficient training opportunities presents significant challenges. Our study details the design, development, and evaluation of a low-cost, high-fidelity buccal myomucosal flap surgical simulator.

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Objective: This study aims to assess the safety and efficacy of solely using local anesthetics for cleft lip repair and/or revision in adolescent and adult patients.

Design: Systematic review.

Setting: Clinical studies describing the use of local anesthetics in cleft lip repair procedures.

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Introduction: Postoperative feeding is crucial for the recovery of children after cleft surgery. The literature outlines diverse feeding methods with varying recommendations on the duration of non-nipple feeding postsurgery. This study aims to explore reported postoperative feeding modalities for infants undergoing primary cleft lip/palate repair, concentrating on their influence on feeding improvement and complication reduction.

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Surgical simulators are crucial in early craniofacial and plastic surgical training, necessitating synthetic materials that accurately replicate tissue properties. Recent critiques of our lab's currently deployed silicone surrogate have highlighted numerous areas for improvement. To further refine our models, our group's objective is to find a composition of materials that is closest in fidelity to native oral mucosa during surgical rehearsal by expert craniofacial surgeons.

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Various patients with complete bilateral cleft lip and palate present with a protruded premaxilla. Several techniques have been described for correctional repair of the projection with a plethora of unsatisfactory outcomes. This poses a challenge not only for the cleft team providing care but also for the patients and their respective families.

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Objective: The inaugural Cleft Summit aimed to unite experts and foster interdisciplinary collaboration, seeking a collective understanding of velopharyngeal insufficiency (VPI) management.

Design: An interactive debate and conversation between a multidisciplinary cleft care team on VPI management.

Setting: A two-hour discussion within a four-day comprehensive cleft care workshop (CCCW).

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Secondary cleft lip (CL) deformities are commonly encountered in cleft management. Various attempts have been made to create a classification system that can comprehensively encapsulate residual CL deformities after primary repair. The aim of this study is to reinforce valid classification systems and to introduce a new classification subtype (Type V Revision).

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Orofacial clefts, in particular cleft lip and cleft palate, are among the most common congenital anomalies. Despite guidelines recommending early surgical correction, a global backlog of untreated patients persists. This has made orofacial clefts an attractive target for global cleft care initiatives.

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Article Synopsis
  • Musculoskeletal (MSK) injuries are prevalent and serious among healthcare providers, often arising from inadequate training and awareness.
  • The Comprehensive Cleft Care Workshop (CCCW) has introduced an ergonomics session in its curriculum to tackle this issue.
  • The initiative aims to boost awareness of ergonomic practices, promote their daily use, and decrease the frequency of MSK injuries in the healthcare field.
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Objective: A protruded premaxilla has always been challenging to care for by cleft care professionals. This study aims to fortify the use of a single-stage premaxillary setback, with posterior vomerine ostectomy and primary cheiloplasty to achieve proper care for patients with bilateral cleft lip and palate (BCLP) and protruded premaxilla.

Design: Longitudinal retrospective analysis.

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Clefts of the lip and/or palate can result in significant morbidity as well as economic and psychosocial distress for patients and families. Global Smile Foundation is a non-profit organization committed to providing comprehensive cleft care to patients with cleft of the lip/palate around the world. Primary cleft lip and primary cleft palate repairs performed by the Global Smile Foundation in the last decade were reviewed.

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Purpose: Craniofacial microsomia (CFM) represents a spectrum of craniofacial malformations, ranging from isolated microtia with or without aural atresia to underdevelopment of the mandible, maxilla, orbit, facial soft tissue, and/or facial nerve. The genetic causes of CFM remain largely unknown.

Methods: We performed genome sequencing and linkage analysis in patients and families with microtia and CFM of unknown genetic etiology.

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Background: Artificial intelligence (AI) leverages today's exceptional computational powers and algorithmic abilities to learn from large data sets and solve complex problems. The aim of this study was to construct an AI model that can intelligently and reliably recognize the anatomy of cleft lip and nasal deformity and automate placement of nasolabial markings that can guide surgical design.

Methods: We adopted the high-resolution net architecture, a recent family of convolutional neural networks-based deep learning architecture specialized in computer-vision tasks to train an AI model, which can detect and place the 21 cleft anthropometric points on cleft lip photographs and videos.

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Congenital clefts of the lip and/or palate are among the most common craniofacial malformations. Patients with bilateral cleft of the lip often present with projected premaxilla. Premaxillary setback with a vomerine ostectomy posterior to the vomero-premaxillary suture, bilateral cleft lip repair, bilateral gingivoperiosteoplasties, and primary cleft lip rhinoplasty are achieved in a single-stage surgery that provides a valuable alternative to patients, especially in the outreach settings.

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Background: In countries which lack robust health care systems, congenital conditions such as cleft lip and/or palate deformities are often untreated in certain individuals. Many volunteer organizations have stepped in to fill this gap but certain factors, such as continuity of care, are yet to be studied for these clinics.

Methods: This is a retrospective cohort study of 167 pediatric patients with cleft lip and/or palate residing in El Salvador treated by a nongovernmental organizations between 2011 and 2020.

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Microtia is a congenital malformation that encompasses mild hypoplasia to complete loss of the external ear, or pinna. Although the contribution of genetic variation and environmental factors to microtia remains elusive, Amerindigenous populations have the highest reported incidence. Here, using both transmission disequilibrium tests and association studies in microtia trios (parents and affected child) and microtia cohorts enrolled in Latin America, we map an ∼10-kb microtia locus (odds ratio = 4.

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Objective: Describe the first hybrid global simulation-based comprehensive cleft care workshop, evaluate impact on participants, and compare experiences based on in-person versus virtual attendance.

Design: Cross-sectional survey-based evaluation.

Setting: International comprehensive cleft care workshop.

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Background: Comprehensive cleft care is a multidisciplinary team endeavor. While untreated craniofacial conditions have multiple undue repercussions, cleft care in outreach settings can be fraught with significant perioperative morbidity risks.

Aim: Propose updated quality assurance standards addressing logistic and operational considerations essential for the delivery of safe and effective cleft lip and /or palate (CL/P) care in low and middle-income countries (LMICs) settings.

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Introduction: Clefts of the lip are of the most common congenital craniofacial anomalies. The development and implementation of an enhanced recovery after surgery (ERAS) protocol among patients undergoing cleft lip repair may decrease postoperative complications, accelerate recovery, and result in earlier postoperative discharge.

Methods: A modified ERAS program was developed and applied through Global Smile Foundation outreach craniofacial programs.

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Background: Since COVID-19 was declared a worldwide pandemic by the World Health Organization (WHO) in March of 2020, foundation-based cleft outreach programs to Low- and Middle-Income Countries (LMICs) were halted considering global public health challenges, scarcity of capacity and resources, and travel restrictions. This led to an increase in the backlog of untreated patients with cleft lip and/or palate, with new challenges to providing comprehensive care in those regions. Resumption of international outreach programs requires an updated course of action to incorporate necessary safety measures in the face of the ongoing pandemic.

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Non-governmental organizations (NGOs) aim to alleviate unmet global disease burden and promote collaboration between visiting and host countries. Well-executed emergency response protocols are foundational to providing safe and quality care in an unpredictable global setting. Global Smile Foundation (GSF) instituted a protocol in 2012 based on over three decades of cleft care experience.

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Introduction: We analyzed the perceptions of participants and faculty members in simulation-based comprehensive cleft care workshops regarding comprehensive cleft care delivery in developing countries.

Methods: Data were collected from participants and faculty members in 2 simulation-based comprehensive cleft care workshops organized by Global Smile Foundation. We collected demographic data and surveyed what they believed was the most significant barrier to comprehensive cleft care delivery and the most important intervention to deliver comprehensive cleft care in developing countries.

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Introduction: The authors analyzed the insights of participants and faculty members of Global Smile Foundation's Comprehensive Cleft Care Workshops concerning the barriers and interventions to multidisciplinary cleft care delivery, after stratification based on demographic and geographic factors.

Methods: During 2 simulation-based Comprehensive Cleft Care Workshops organized by Global Smile Foundation, participants and faculty members filled a survey. Surveys included demographic and geographic data and investigated the most relevant barrier to multidisciplinary cleft care and the most significant intervention to deliver comprehensive cleft care in outreach settings, as perceived by participants.

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Simulation is a well-studied teaching tool for multidisciplinary teamwork, crisis resource management, and communication skills. These attributes are essential for successful international medical missions, which include healthcare providers with different familiarities with the outreach environment and each team member's role. However, immersive simulation remains underused in similar settings.

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