Items tagged “bone”
66 results found
Article
Os subfibulare
Os subfibulare is an accessory ossicle that lies at the tip of the lateral malleolus of the ankle and is rarely reported 1.
Clinical presentation
Os subfibulare are usually asymptomatic although they may eventually cause painful syndromes or degenerative change in response to overuse and traum...
Article
Os subtibiale
An os subtibiale is a rare, genuine accessory ossicle and normal variant related to the posterior colliculus of the medial malleolus 1. It is present in ~1% of the population 5.
Clinical presentation
They usually are asymptomatic although they may eventually cause painful syndromes or degener...
Case
Parosteal osteosarcoma
Published
01 Apr 2013
86% complete
MRI
Article
Accessory superior acetabular notch
An accessory superior acetabular notch is a normal variant of the acetabulum, which can be seen on radiographs. It may lead to diagnostic confusion, especially in younger patients.
Radiographic features
MRI
appear as bilateral symmetric fluid-filled pits in the roof of the acetabulum with sh...
Case
Bony metastasis from small cell lung carcinoma
Published
12 Apr 2013
79% complete
X-ray
Case
Osteopetrosis (primary)
Published
14 Apr 2013
75% complete
CT
X-ray
Case
Secondary hyperparathyroidism
Published
06 May 2013
68% complete
CT
Case
Myelofibrosis
Published
27 May 2013
65% complete
X-ray
CT
Article
Os hamuli proprium
The hook of the hamate has its own ossification center, which may fail to fuse with the body of the hamate, creating an ossicle. This ossicle is referred to as an os hamuli proprium or unfused hamulus
In some instances, this can be difficult to distinguish from a fracture of the hook, but is s...
Case
Giant cell tumor
Published
05 Jun 2013
66% complete
X-ray
Case
Diffuse bony metastases from breast cancer
Published
07 Jun 2013
59% complete
CT
Case
Osteomyelitis - post amputation
Published
21 Jun 2013
65% complete
X-ray
Ultrasound
Case
Osteitis pubis
Published
23 Jun 2013
74% complete
CT
Article
Accessory ossicles of the wrist (mnemonic)
The accessory ossicles of the wrist can be easily recalled with the mnemonics:
LOTTEO 1
HOTELS
Mnemonics
LOTTEO
L: lunula
O: os styloideum (carpal boss)
T: (os) triangulare
T: (os) trapezium secondarium
E: (os) epilunate
O: os hamuli proprium
HOTELS
H: (os) hamuli proprium
O: os tri...
Article
Accessory ossicles of the wrist
Accessory ossicles of the wrist are commonly seen on plain radiographs of the wrist and associated cross-sectional imaging. Over 20 were originally described 2, although the more common include 1:
lunula: between TFCC and triquetrum
os styloideum (carpal boss): on dorsal surface of 2nd or 3rd ...
Case
Periosteal reactions (diagram)
Published
08 Jul 2013
25% complete
Diagram
Article
Multipartite hallux sesamoid
Multipartite hallux sesamoids are a commonly seen normal variant, present in up to 33% of hallux sesamoids. They are more commonly bipartite than tripartite.
The medial (tibial) sesamoid is more likely to be multipartite than the lateral (fibular) sesamoid because it more commonly has more tha...
Article
Angiosarcoma (bone)
Angiosarcoma of bone is a malignant vascular bone tumor. These are rare and account for <1% of malignant bone tumors. The majority of these tumors arising in bone are primary; however, a tiny percentage are either radiation-induced or associated with bone infarction.
Epidemiology
Most common i...
Case
Bone terminology (diagram)
Published
17 Jun 2014
29% complete
Diagram
Case
Paget disease: with blade of grass sign
Published
03 Aug 2014
91% complete
Annotated image
X-ray
CT
MRI
Nuclear medicine
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