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Fulltext A Low-cost DIY Simulator for Flexor Tendon Repairs

Burhamah W, AlShawaf SM

Plast Reconstr Surg Glob Open, 2022 Dec;10(12):e4726.
PMID: 36569236 DOI: 10.1097/GOX.0000000000004726
Fulltext A Streamlined Algorithmic Process for Creating Three-dimensional Printed Forearm Casts

Alshawaf SM, Burhamah W, Alwazzan S, AlYouha S

Plast Reconstr Surg Glob Open, 2023 Mar;11(3):e4824.
PMID: 36875921 DOI: 10.1097/GOX.0000000000004824

Three-dimensional (3D) printing is a rapidly evolving field that has found its way into the medical field, providing unsurpassed contributions to the provision of patient-centered care. Its utilization lies in optimizing preoperative planning, the creation and customization of surgical guides and implants, and the designing of models that can be used to augment patient counseling and education. We integrate a simple yet effective method of scanning the forearm using an iPad device with Xkelet software to obtain a 3D printable stereolithography file, which is then incorporated to our suggested algorithmic model for designing a 3D cast, utilizing Rhinocerus design software and Grasshopper plugin. The algorithm implements a stepwise process of retopologizing the mesh, division of the cast model, creating the base surface, applying proper clearance and thickness to the mold, and creating a lightweight structure through the addition of ventilation holes to the surface with a joint connector between the two plates. In our experience, scanning and design of the patient-specific forearm cast using Xkelet and Rhinocerus, alongside implementing an algorithmic model through Grasshopper plugin has dramatically reduced the designing process from 2 to 3 hours to 4-10 minutes, further increasing the number of patient scans that can be sequenced in a short duration. In this article, we introduce a streamlined algorithmic process for the use of 3D scanning and processing software to create forearm casts that are tailored to the patients' dimensions. We emphasize the implementation of computer-aided design software for a quicker and more accurate design process.
Cross-sectional Study on Assessment of First-pass Success of Video Laryngoscope Intubation in General Anesthesia Patients

Selina F, Talha KA, Maw K, Aung T, Ahmed F, Solaiman M

Mymensingh Med J, 2021 Jan;30(1):123-127.
PMID: 33397862

Traditional Direct laryngoscope (DL) has been used by anesthesiologist during intubation for general anesthesia patients for more than a century. Video laryngoscope (VL) helps in better visualization of laryngeal orifice during intubation and reduces intubation time. This was a cross sectional study conducted in two Asian Hospitals Queen Elizabeth II hospital of Kotakinabalu, Malaysia and King Faisal Hospital Taif of Saudi Arabia to assess the first-pass success of video laryngoscope and to compare with direct laryngoscope from July 2015 to December 2017. Random lottery technique was applied for sampling. Participants of both groups (VL and DL) were enrolled by simple lottery method. Total 146 patients were enrolled with a set inclusion criterion. Mallampati class, mouth opening, thyromental distance and mobility of atlantooccipital junction were set as predictors of first-pass success. The first-pass success was 98.7% in mallampati II patients and 92.8% in mallampati III patients. Average success rate was 95.75%. The mean success rate of VL and DL was compared and was found VL had a significantly better first-pass success rate than DL (p<0.05).
Preferred Nasolabial Angle in Rhinoplasty: A Cross-Sectional Analysis

Alshawaf SM, McGuire C, ElAbd R, Fakih-Gomez N, Williams J, AlYouha S, et al.

Aesthet Surg J, 2023 Sep 20.
PMID: 37738132 DOI: 10.1093/asj/sjad309

BACKGROUND: The perception of an ideal nose is influenced by a variety of factors, with demographic characteristics playing a significant role in what is considered an ideal nose. The nasolabial angle (NLA) is considered one of the defining features shaping the nose.
OBJECTIVES: This study set out to capture the perception of the ideal nasolabial angle among Canadian, Saudi, Kuwaiti, and Lebanese populations.
METHODS: An online questionnaire-based cross-sectional study was conducted to investigate the ideal nasolabial angle among Canadian, Saudi, Kuwaiti, and Lebanese populations (N = 197). Participants were patients attending outpatient clinics, plastic surgery residents and medical students. The questionnaire consisted of demographics and perception of respondents on the ideal NLA for each gender: Male (85, 90, 95, 100, 110) and Females (95, 100, 110, 115).
RESULTS: The majority of respondents were female (81.2%) aged between 20 and 39 (84.3%). The mean and standard deviation of ideal NLA choices in both male and female models were 97.1 +/- 6.39 and 109.5 +/- 5.32 respectively. The ideal male NLA choices were found to correlate significantly with age (p 0.044) and work status (p 0.019). In choosing the ideal female NLA, age was a significant factor (p 0.012).
CONCLUSIONS: Identifying the ideal NLA is essential for establishing aesthetic goals for patients and surgeons alike. It is important to understand the effects of demographics on the choice of the ideal NLA, which ultimately influences the planning and outcome of rhinoplasty procedure.