Carlos Alberto Araujo Chagas

Acidente por injeção medicamentosa no músculo deltoide: lesões locais e à distância, revisão de 32 casos

Analysis of 32 cases of accidental injection of oily suspension (in most cases) into the deltoid muscle is reported. Pain and local ulcers characterized the accidents. In many cases, simultaneous ischemic disorders were observed in the scapular and pectoral regions and especially in the end of the upper limb. It is presumed that this complex lesion was caused by 1) the harmful action of the medication on nervous terminations, soft and perivascular tissues; and/or 2) occasional entrance of the substance into blood vessels, causing embolism and/or thrombotic endothelitis; and/or 3) vasomotor phenomena. Hand injuries were generally more severe than injuries in the deltoid region, with occasional spontaneous or surgical loss of fingers. Clinical statuses were similar, though some lesions had features, which allowed identification of peculiar physiopathogenic mechanisms, with conceptual and therapeutic significance.

Morphological Analyisis of the Fabella in Brazilians

Entre los huesos sesamoideos que estan presentes en el cuerpo humano, la fabela puede encontrarse en la cara posterior de la rodilla. Los reportes de su incidencia son bastante controvertidos en la literatura anatomica clasica, como tambien su constitucion. Hay autores que mencionan a la fabela como tejido oseo, mientras otros la describen como una estructura fibrocartilaginosa. El sitio anatomico de ubicacion es el tendon del gastrocnemio lateral, proximo de su origen, en la cara posterior del condilo femoral lateral. La prevalencia es mas grande en individuos del sexo masculino. En presencia de este, se observa en rodilla la ausencia del ligamento popliteo arqueado y la aparicion del ligamento fabelo-fibular. Hay pocos trabajos que discuten la anatomia del compartimiento postero-lateral de la rodilla con la Fabela, asi como su constitucion. Este trabajo tiene el proposito de analizar la incidencia de la fabela, su estructura histologica, asociandola con la presencia u ausencia de los ligamientos popliteo arqueado y fabelo-fibular a traves del estudio macro y microscopico. Fueron disecados sesenta y cuatro cadaveres, sin causa mortis definida. Despues fueron disecados. La fabela cuando estuvo presente fue retirada y fijada en formaldehido al 4% para su evaluacion microscopica. De las sesenta y dos rodillas estudiadas dos presentaron fabela. La primera tuvo 1,6 cm de diametro, ligeramente concava en su cara en contacto con condilo femoral lateral, bordes poco irregulares. La segunda tuvo 1,3 cm de diametro con las mismas caracteristicas estructurales. La fabela es un hueso sesamoideo que surge en la rodilla con baja frecuencia. Su aparicion se acompano de la ausencia del ligamento popliteo-oblicuo y la presencia del ligamento fabelo-fibular. El estudio histologico determino tejido oseo en su constitucion sin osteoclastos.

Accessory subscapularis muscle – A forgotten variation?

The quadrangular space is a space in the axilla bounded by the inferior margin of the teres minor muscle, the superior margin of the teres major muscle, the lateral margin of the long head of the triceps brachii muscle and the surgical neck of the humerus, medially. The axillary nerve (C5-C6) and the posterior circumflex humeral artery and veins pass through this space in order to supply their territories. The subscapularis muscle is situated into the scapular fossa and inserts itself into the lesser tubercle of the humerus, thus helping stabilize the shoulder joint. A supernumerary muscle known as accessory subscapularis muscle originates from the anterior surface of the muscle and usually inserts itself into the shoulder joint. It is a rare variation with few reports of its existence and incidence. We present a case of the accessory subscapularis muscle in a male cadaver fixated with a 10% formalin solution. The muscle passed anteriorly to the axillary nerve, thus, predisposing an individual to quadrangular space compression syndrome. We perform a review of the literature and address its clinical, anthropological and anatomical significance.

De Garengeot's hernia in an 82-year-old man: a case report and clinical significance

The presence of the appendix within a femoral hernia (FH) sac is known as Garengeots hernia (GH). We report on current study a rare case of an elderly man with a combined inguinal and Garengeots hernia and discuss the clinical aspects. An 82-year-old man clinically stable, presented history of pain at the right inguinal region for over a week, without vomit, nausea, fever or any alteration of intestinal or urinary eliminations. Clinical examination revealed a FH and the ultrasonography confirmed the hernia sac. During the surgery, the appendix was recognized within the sac, and then, the patient underwent appendectomy and hernia repair. In conclusion, the presence of the vermiform appendix in a FH sac is rare, thus, requiring knowledge of the surgeon regarding this clinical entity. Prompt diagnosis and appropriate surgical treatment is the key to avoid complications.

Rare origin of the obturator artery from the external iliac artery with two obturator veins

Abstract The obturator artery is a branch of the internal iliac artery, although there are reports documenting variations, with origin from neighboring vessels such as the common iliac and external iliac arteries or from any branch of the internal iliac artery. It normally runs anteroinferiorly along the lateral wall of the pelvis to the upper part of the obturator foramen where it exits the pelvis by passing through said foramen. Along its course, the artery is accompanied by the obturator nerve and one obturator vein. It supplies the muscles of the medial compartment of the thigh and anastomoses with branches of the femoral artery on the hip joint. We report a rare arterial variation in a Brazilian cadaver in which the obturator artery arose from the external iliac artery, passing beyond the external iliac vein toward the obturator foramen, and was accompanied by two obturator veins with distinct paths. We also discuss its clinical significance.

Anomalous origin of the deep brachial artery (profunda brachii) observed in bilateral arms: case report

During an ordinary dissection, a cadaver showed a bilateral anomalous origin of the deep brachial artery, where this vessel appeared like a branching of the subscapular artery with common trunk, which included the posterior circumflex humeral artery. The course and distribution of the deep brachial artery in the back compartment were relatively consistent with previous reports. Arterial variations can be damaged through iatrogenic means if not properly documented. The knowledge of this case is very important in clinical medicine and in surgeries in this compartment to prevent any injury.

The venous patterns of the cubital fossa in subjects from Brazil

Venous punctures are among the most common procedures performed by healthcare professionals. In particular, the cubital fossa is the site where the venous accesses are frequently made due to the number of superficial veins and the numerous anastomoses in this region. The arrangement of these venous connections is of particular interest for clinical application in several areas, thus, the healthcare professional must possess knowledge about these vessels and their anatomical relationships. The present study aims to analyze the venous pattern of the cubital fossa among individuals from Brazil. This study was approved by a Research Ethics Committee. The sample had 100 healthy individuals (50 men and 50 women). The superficial veins of the cubital fossa were analyzed with the aid of a sphygmomanometer. When inflated, the pressure in the forearm increased and the veins became prominent. It was observed that in the selected sample the types with the highest prevalence were the Type I and Type VII, both with 22% in 200 limbs studied. The chi2 test showed a significant statistical difference between the anastomosis pattern and the sex of the studied sample. The anastomotic pattern of the superficial veins of the studies sample is similar to African, European and Asian populations. The study of these variations is necessary to provide scientific basis for the healthcare professional during a venipuncture in order to avoid iatrogenic errors and damages in cutaneous nerves or neighboring arteries.

Corona Mortis : anatomical and surgical description on 60 cadaveric hemipelvises

OBJECTIVE to report the prevalence of arterial corona mortis and to describe its surgical and clinical applicabilities. METHODS We dissected 60 hemipelvises (50 men and 10 women) fixed in a 10% formalin solution for the purpose of gathering information on corona mortis. We measured the caliber and length of the obturator artery and its anastomotic branch with the aid of a digital caliper and submitted the data to statistical analyzes and comparisons with the GraphPad Prism 6 software. RESULTS arterial corona mortis was present in 45% of the studied sample. The most common origin of the obturator artery was the internal iliac artery; however, there was one exceptional case in which it originated from the femoral artery. The caliber of the anastomotic branch was on average 2.7mm, whereas the caliber of the obturator artery was 2.6mm. CONCLUSION the vascular connections between the obturator, internal iliac, external iliac and inferior epigastric arterial systems are relatively common over the upper pubic branch. The diameter and a trajectory of the anastomotic artery may vary. Thus, iatrogenic lesions and pelvic and acetabular fractures can result in severe bleeding that puts the patients life at risk.

Clinical discussion of the arteria lusoria: a case report

Abstract The right subclavian artery may originate from the left portion of the aortic arch. This aberrant vessel is known as the arteria lusoria. Its course to its usual site runs behind the esophagus, which may cause a disease known as dysphagia lusoria, responsible for symptoms of discomfort. This artery is often associated with other anomalies, such as the non-recurrent laryngeal nerve and the bicarotid trunk, and with diseases such as aneurysms, congenital heart defects, and even genetic syndromes. During routine dissection of a male cadaver fixed in 10% formalin solution, an arteria lusoria was found. This article reports the variation and discusses its embryological, clinical and surgical aspects.

Klippel-Trenaunay and Parkes-Weber syndromes: two case reports

Abstract Parkes-Weber syndrome is a congenital vascular disease that comprises capillary, venous, lymphatic, and arteriovenous malformations. Although Parkes-Weber syndrome is a clinically distinct entity with serious complications, it is still frequently misdiagnosed as Klippel-Trenaunay syndrome, which consists of a triad of malformations involving the capillary, venous, and lymphatic vessels, without arteriovenous fistulas. Both syndromes are generally diagnosed with Doppler ultrasound and confirmed by magnetic resonance angiography. The aim of this study is to describe one case of Klippel-Trenaunay syndrome, in a 36-year-old patient, and one case of Parkes-Weber syndrome, in a 21-year-old patient. We review the literature in order to discuss the possible causes and consequences of these diseases related to venous hypertension and angiodysplasia, taking a clearer approach to their differences, and discussing their treatment.