Search results for “bone contusions”

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Article

Bone contusion

Bone (marrow) contusion (also known as bone bruising) is an osseous injury which may result from compression of bone structures. Pathology Bone contusions represent trabecular microfractures with hemorrhage and without a discrete fracture line or contour abnormality 4. They typically appear wi...
Article

Patterns of bone contusion in knee injury

Pattern of bone contusion in knee injuries can give clues for the mechanism and associated injuries.  Radiographic features Five classic bone contusion patterns have been described 1-4: pivot-shift injury valgus stress to flexed and externally rotated knee contusion pattern: posterolateral ...
Case

Multiple cerebral contusions and temporal bone fracture

 Diagnosis certain
Dr Derek Smith
Published 09 Jun 2015
95% complete
CT
Article

Meniscal contusion

Meniscal contusion refers to a form of meniscal injury where there is no overt tear or gross disruption. They usually occur from flexion injuries with compression of the posterior horn of the medial meniscus between the femoral condyle and the tibia. Radiographic features MRI In the setting o...
Article

Contrecoup injury (knee)

A contrecoup injury of the knee is a bone contusion of the posterior lip of the medial tibial plateau. It occurs during knee reduction after a pivot shift injury and is highly associated with ACL tears 1, and peripheral tear or meniscocapsular separation of the medial meniscus posterior horn 2. ...
Article

Geode

Geodes, also known as a subchondral cysts, are well-defined lytic lesions at the periarticular surfaces. A geode is one of the common differential diagnoses of an epiphyseal lesion (lytic). Pathology Presumably, one method of geode formation takes place when synovial fluid is forced into the s...
Article

Bone marrow edema

Bone marrow edema is the term given to abnormal fluid signal seen within the bone marrow on MRI. It is a non-specific, yet important finding usually indicating the presence of an underlying pathology. Pathology Etiology There is a long (long) list of possible causes of this finding: primary:...
Article

Orbital blow-in fractures

Orbital blow-in fractures occur when there is displacement of bone fragments towards the orbits. Pathology blow-in fracture effectively reduces the volume of the orbit associated intraorbital injuries include extraocular muscle entrapment and optic nerve injury as an isolated (pure) orbital ...
Article

Depressed skull fracture

Depressed skull fractures result in the bone of the skull vault being folded (depressed) inward into the cerebral parenchyma. It is usually the result of a high energy impact to the skull. Pathology These mostly (~75%) occur in the frontoparietal region 3. Associations There are a number of ...
Article

Posterior ankle impingement syndrome

Posterior ankle impingement (PAI) syndrome is one of the impingement syndromes involving the ankle. It is classically described in ballet dancers. Epidemiology It is usually a unilateral phenomenon. Bilateral posterior ankle impingement syndrome has been described but is rare 5. Clinical pres...
Article

Computed tomography of the chest

Computed tomography (CT) of the chest is a cross-sectional evaluation of the heart, airways, lungs, mediastinum, and associated bones and soft tissues. Two key methods of image acquisition include: standard CT with 5 mm slice thickness for mediastinum and gross evaluation of lungs high-resolu...
Article

Temporal bone fracture

Temporal bone fracture is usually a sequela of significant blunt head injury. In addition to potentially damage to hearing and the facial nerve, associated intracranial injuries, such as extra-axial hemorrhage, diffuse axonal injury and cerebral contusions are common. Early identification of tem...
Article

Posterior cruciate ligament tear

Posterior cruciate ligament (PCL) tears are less common than anterior cruciate ligament tears.  Epidemiology Posterior cruciate ligament tears account for ~10% (range 2-23%) of all knee injuries 2.  Clinical presentation Sports injuries and car accidents (dashboard injury) are equally respon...
Article

Dorsal intercalated segment instability

Dorsal intercalated segment instability (DISI) is a form of instability involving the wrist. It occurs mainly after the disruption of the scapholunate ligament and is more often encountered than volar intercalated segment instability (VISI). Clinical presentation radial or dorsal wrist pain, m...
Article

Skull fractures

Skull fractures are common in the setting of both closed traumatic brain injury and penetrating brain injury. Their importance is both as a marker of the severity of trauma and because they are, depending on location, associated with a variety of soft tissue injuries.  This article will focus o...
Article

Burst fracture

Burst fractures are a type of compression fracture related to high-energy axial loading spinal trauma that results in disruption of the posterior vertebral body cortex with retropulsion into the spinal canal.  Clinical presentation They usually present as back pain and or lower limbs neurologi...
Article

Patellofemoral instability

Patellofemoral instability is the clinical syndrome due to morphologic abnormalities in the patellofemoral joint where the patella is prone to recurrent lateral dislocation. Epidemiology Most patients with patellar instability are young and active individuals, especially females in the second ...
Article

Distal tibiofibular syndesmosis injury

Distal tibiofibular syndesmosis injuries are a relatively frequent ankle injury, although less common than a fracture or lateral collateral ligament injuries. They are estimated to comprise ~10% (range 1-20%) of ankle injuries.  Pathology The mechanism of injury is uncertain but thought to be ...
Article

Posterolateral rotatory instability of the elbow

Posterolateral rotatory instability of the elbow is the most common pattern of elbow instability, most commonly seen following posterior elbow dislocation 1. It is characterized by 2-4: posterolateral subluxation/dislocation of radial head relative to capitellum posterior displacement of ulna ...
Article

Anterior cruciate ligament tear

Anterior cruciate ligament (ACL) tears are the most common knee ligament injury encountered in radiology and orthopedic practice. Clinical presentation  Patients typically present with symptoms of knee instability, usually after acute trauma. The following signs and symptoms are common: poppi...

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