90 results found
Article
Bone bruise
Bone bruises (also known as bone contusion, trabecular microfracture) are an osseous injury that results from compression of bone structures.
Pathology
Bone bruises represent trabecular microfractures with hemorrhage and without a discrete fracture line or contour abnormality 4. They typically...
Article
Patterns of bone bruise in knee injury
The pattern of bone bruise in knee injuries (a.k.a. bone contusion) 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
...
Case
Multiple cerebral contusions and temporal bone fracture
Published
09 Jun 2015
95% complete
CT
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
Posterior ankle impingement syndrome
Posterior ankle impingement (PAI) syndrome is one of the impingement syndromes involving the ankle.
Epidemiology
It is usually a unilateral phenomenon. Bilateral posterior ankle impingement syndrome has been described but is rare 5. It is classically described in ballet dancers.
Clinical pres...
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 imaging finding, usually indicating the presence of underlying pathology.
Pathology
Etiology
There is a long (long) list of possible causes of this finding:
pr...
Article
Dual-energy CT (clinical applications)
Dual-energy CT or multispectral CT is becoming increasingly common in clinical practice due to the rapid rise in computer technology and expanding literature exhibiting vast advantages over conventional single-energy CT.
Clinical applications
The clinical practice, adaptation and techniques o...
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
Patellofemoral instability
Patellofemoral instability is the where the patella does not remain in the trochlear groove during normal knee range of motion.
Epidemiology
Most patients with patellar instability are young and active individuals, especially females in their second decade 2. Incidence is ~25 (range 6-77) per ...
Article
Dorsal intercalated segment instability
Dorsal intercalated segment instability (DISI) is a form of carpal instability featuring dorsal tilt of the lunate. It occurs mainly after the disruption of the scapholunate ligament and is more often encountered than volar intercalated segment instability (VISI).
Clinical presentation
radi...
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.
Associations
Posterior cruciate ligament injuries are isolated in only 30% of cases and are t...
Article
Distal tibiofibular syndesmosis injury
Distal tibiofibular syndesmosis injuries are a relatively frequent ankle injury, although less common than a fracture or lateral ankle sprain. They are estimated to comprise ~10% (range 1-20%) of ankle injuries.
Epidemiology
Associations
anterior talofibular ligament injury
fracture / bone ...
Article
Anterior cruciate ligament tear
Anterior cruciate ligament (ACL) tears are the most common knee ligament injury encountered in radiology and orthopedic practice.
Epidemiology
The anterior cruciate ligament (ACL) is the most commonly disrupted ligament of the knee, especially in athletes who participate in sports that involve...
Article
Posterolateral corner injury of the knee
Posterolateral corner (PLC) injury of the knee can occur in isolation or with other internal derangements of the knee, particularly cruciate ligament tears. The importance of injuries to the posterolateral ligamentous complex lies in the possible long-term joint instability and cruciate graft fa...
Article
Anomalous insertion of the medial meniscus
Anomalous insertion of the medial meniscus (AIMM) is an anatomical variation of the insertion of the anterior root of the medial meniscus.
Terminology
Defined as a congenital variation in the insertion of the anterior root of the medial meniscus onto the anterior cruciate ligament (ACL). The...
Article
Muscle contusion
A muscle contusion (a.k.a. muscle bruising or bruise) is a form of muscle injury usually due to direct impact and associated with intramuscular hemorrhage.
Epidemiology
Muscle contusions are common injuries and are more frequently seen in males 1,2. In athletes, muscle contusions are the most ...
Article
Kissing sign (disambiguation)
Kissing sign refers to an approximation of two paired or similar anatomical structures and can describe anatomical variation or a disease.
It is described at the following:
kissing carotids: anatomical variation
kissing ovaries sign: seen in pelvic endometriosis
kissing spines: refers to Baa...
Case
Hyperextension and posteromedial corner injury pattern with Baker cyst rupture, and incidental prepatellar quadriceps continuation
Published
04 Jan 2021
80% complete
MRI
Case
Complete tears of the common flexor tendon and ulnar collateral ligament
Published
12 Sep 2022
100% complete
MRI
Case
Anterior cruciate ligament complete tear
Published
29 Nov 2015
95% complete
MRI
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