Structural Anatomy
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12503/32563
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Browsing Structural Anatomy by Author "Ballout, Bassam"
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Item An atypical variation of the Deltoid Muscle- A Case Report(2024-03-21) Green, Chase; Ballout, BassamThis case report describes an atypical deltoid variant discovered during cadaveric dissection of a middle-aged male donor. The bilateral spinal segments of the deltoid muscle (DM) were found to be encased in a distinctive fascial compartment, disconjugate from the normal morphology. The spinal segments were found to be innervated by a branch of the axillary nerve and perfused by a branch of the posterior circumflex humeral artery. Divergences from expected anatomy are important clinically in respect to surgical interventions, as correctly identifying in situ anatomy is essential for the accurate diagnosis and treatment of shoulder pathologies. Unexpected anatomical variations can cause unanticipated surgical delays, and the misidentification of in situ anatomy can be a cause for iatrogenic injury –both of which can increase the probability of unfavorable outcomes in the care of the surgical patient.Item Bilateral Accessory Piriformis Variant and its Implications – A Case Report(2024-03-21) Ballout, Bassam; Van Alfen, Braden; Ballout, Yassine; Rosales, ArmandoThe piriformis muscle is a major muscle of the gluteal region and can be a cause of sciatic pain known as piriformis syndrome. Routine dissection of a cadaver of unknown age presented with bilateral accessory piriformis muscles. The main piriformis muscle was noted bilaterally with a smaller, accessory muscle separate and distinct from the main piriformis muscles. These accessory muscles originated and attached at the same anatomical landmarks as the main piriformis. The tibial nerve exited from below both piriformis muscles and the common fibular nerve exited between the two muscle bellies. This presentation of accessory piriformis is unique and has seldom been presented in the literature. Anatomical accessory muscles such as this one has important clinical considerations including in surgery, radiology, and the diagnosis of sciatic pain caused by piriformis syndrome.