Posterior Elbow Dislocation with Brachial Artery Thrombosis Treated Non-surgically: A Case Report

Delayed thrombosis of all upper limb arteries: A rare complication in the closed posterior elbow dislocation in the emergency department

Vascular injuries are one of the most feared complications of orthopedic emergencies such as fractures and dislocations. The proximity of neurovascular structures to most of the long bones and major joints makes them more vulnerable to injury. A proper and repeated clinical examination is always advised for early diagnosis and prompt management of these complications in the emergency department. We present a case of delayed extensive thrombosis of upper limb arteries, one of the rare complications of closed posterior elbow dislocation managed by surgical thrombectomy.

Injury of the brachial artery accompanying simple closed elbow dislocation: a case report

Background:

Elbow dislocation is the second common dislocation in adults, after the shoulder. The anatomical proximity to the joint of the brachial artery could lead to concomitant vascular injuries, even if their occurrence remains very rare.

Method:

It is reported the case of a right-hand-dominant 42-year-old man who sustained a simple closed posterior elbow dislocation of his left elbow, associated to a complete brachial artery rupture. He urgently underwent the reduction of the joint dislocation and an artery-repairing surgical procedure using a graft from ipsilateral saphenous vein.

Results:

The full functional capacity of the elbow was obtained.

Conclusions:

The abundance of the brachial artery collateral network may hide the presence of a vascular injury, potentially associated to a closed elbow dislocation. Therefore, a high index of suspicious should be maintained. The Emergency Team plays a crucial role in its early diagnosis, which is essential to avoid irreversible ischemia related damages. A prompt reduction of the joint dislocation and the vascular injury surgical repair are required. Regarding the treatment of the concomitant collateral ligaments and capsular injuries, the indication to proceed to the simultaneous ligaments reconstruction is still controversial in literature.

Quantifying the ultrastructure changes of air-dried and irradiated human amniotic membrane using atomic force microscopy: a preliminary study

Air-dried and sterilized amnion has been widely used as a dressing to treat burn and partial thickness wounds. Sterilisation at the standard dose of 25 kGy was reported to cause changes in the morphological structure as observed under the scanning electron microscope. This study aimed to quantify the changes in the ultrastructure of the air-dried amnion after gamma-irradiated at several doses by using atomic force microscope. Human placentae were retrieved from mothers who had undergone cesarean elective surgery. Amnion separated from chorion was processed and air-dried for 16 h. It was cut into 10 × 10 mm, individually packed and exposed to gamma irradiation at 5, 15, 25 and 35 kGy. Changes in the ultrastructural images of the amnion were quantified in term of diameter of the epithelial cells, size of the intercellular gap and membrane surface roughness. The longest diameter of the amnion cells reduced significantly after radiation (p < 0.01) however the effect was not dose dependent. No significant changes in the shortest diameter after radiation, except at 35 kGy which decreased significantly when compared to 5 kGy (p < 0.01). The size of the irradiated air-dried amnion cells reduced in the same direction without affecting the gross ultrastructure. At 15 kGy the intercellular gap decreased significantly (p < 0.01) with Ra and Rq, values reflecting surface roughness, were significantly the highest (p < 0.01). Changes in the ultrastructure quantified by using atomic force microscope could complement results from other microscopic techniques.