Items tagged “knee”
419 results found
Case
Osteochondral defect with intra-articular loose body
Published
07 May 2015
66% complete
X-ray
Article
Gerdy tubercle
Gerdy tubercle is the eponymous name for the lateral condyle of the proximal tibia (where it is located anterolaterally). It is where the iliotibial band and anterior tibialis muscle inserts.
Article
Genu recurvatum
Genu recurvatum describes the malalignment or deformity of the knee joint with extension beyond neutral (i.e. hyperextension).
Pathology
Genu recurvatum can be associated with subluxation or dislocation of the knee joint.
Etiology
congenital
arthrogryposis multiplex congenita
congenital ...
Article
Widened intercondylar notch
A widened intercondylar notch on knee radiographs is a sign associated with:
haemophilic arthropathy (most commonly bilateral)
juvenile rheumatoid arthritis (most commonly bilateral)
tuberculous arthropathy (usually unilateral) 3
psoriatic arthropathy (unilateral or bilateral)
See also
not...
Case
Segond fracture (diagram)
Published
12 Jun 2015
41% complete
Diagram
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
Osteoarthritis of the knee
Osteoarthritis (OA) of the knee is very common and is a major cause of morbidity, especially in the older population.
Terminology
The term early osteoarthritis of the knee has been proposed and has been defined as meeting three main criteria 9:
knee pain
Kellgren-Lawrence grade 2 or less on...
Case
Focal periphyseal edema zone
Published
31 Jul 2015
92% complete
MRI
Article
Anterolateral ligament of the knee
The anterolateral ligament of the knee (ALL) is a ligament that is thought to aid with rotational stability of the knee joint. Some think that its presence (or reconstruction) may result in better outcomes from ACL stabilization surgery 2.
Gross anatomy
origin: prominence of the lateral femora...
Article
Semitendinosus muscle
The semitendinosus is a fusiform muscle in the posterior compartment of the thigh and hamstrings muscles. It is often divided into two parts by a tendinous inscription 2. It accompanies the semimembranosus muscle in the medial aspect of the posterior thigh. It is named for its cord-like tendon w...
Article
Meniscal extrusion
Meniscal extrusion or subluxation refers to the peripheral meniscal margin extending beyond the external aspect of the tibiofemoral compartment of the knee.
Pathology
This can result from disruption of collagen fibers within the meniscus that provide hoop strength 8.
Associations
medial meni...
Case
Tibial plateau fracture
Published
05 Nov 2015
89% complete
X-ray
CT
Case
Anteromedial meniscofemoral ligament (of the medial meniscus)
Published
06 Nov 2015
89% complete
MRI
Article
Complex meniscal tear
Complex meniscal tears extend in more than one plane, and can in turn create separate flaps of meniscus.
Radiographic features
MRI knee
The mensical tear usually includes a combination of radial, horizontal, and longitudinal components (any two or all three). Often the meniscus substance app...
Case
Tibial plateau fracture: Schatzker type II
Published
21 Dec 2015
89% complete
CT
Case
Bone infarction
Published
04 Jan 2016
94% complete
X-ray
Article
Knee dislocation
Knee dislocations are rare, but a significant number have a serious associated neurovascular injury. This article discusses tibiofemoral joint dislocation. Please see separate articles for discussion of medial and lateral patellar dislocations.
Epidemiology
They account for <0.5% of all joint...
Case
Normal radiographic anatomy of the knee
Published
16 Feb 2016
85% complete
Annotated image
Article
Prepatellar bursitis
Prepatellar bursitis is inflammation and fluid collection within the prepatellar bursa, located between the patella and the overlying subcutaneous tissue. It has been historically referred to as "housemaid's knee".
Clinical presentation
Main symptoms are anterior knee pain and swelling.
Patho...
Case
Osteochondritis dissecans - stage III
Published
05 May 2016
98% complete
MRI
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