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40 Terms
1
What is Madelung’s Deformity?
A condition characterized by premature fusion of the medial portion of the distal radial physis, resulting in a short bowed radius, ulnar tilt, and dorsal subluxation of the ulna.
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2
What causes Madelung’s Deformity?
Trauma, dysplasia, genetic syndromes, or idiopathic causes.
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3
What is Carpal Coalition?
Fusion of two or more carpal bones, which can be acquired or congenital.
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4
What is the most common type of Carpal Coalition?
The luno-triquetral coalition.
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5
What percentage of Carpal Coalition cases are bilateral?
60%.
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6
What is Distal Radioulnar Synostosis?
An abnormal osseous or fibrous fusion of the distal radius and ulna.
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7
What is Polydactyly?
An increase in the number of fingers or toes.
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8
What is the most common developmental anomaly of the hand?
Syndactyly.
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9
What is Syndactyly?
Fusion of the skin between digits or bony fusion of phalanges of adjacent digits.
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10
When does Syndactyly occur during fetal development?
During the 5th week.
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11
What are the two main types of fusion in Syndactyly?
Fusion of skin (syndactyly) and bony fusion (synostosis) of phalanges.
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12
What are the potential causes of Carpal Coalition?
Acquired causes such as inflammatory arthritis or congenital causes due to failure of embryonic cartilaginous segmentation.
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13
What imaging course are these abnormalities associated with?
RAD6210 - Normal Imaging of the Spine & Extremities.
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14
Who is the instructor for the RAD6210 course?
Dr. F. Jarrett-Thelwell.
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15
What is the result of Madelung's Deformity on the radius and ulna?
It causes a relatively long ulna compared to the radius.
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16
What kind of fusion does Distal Radioulnar Synostosis represent?
Either osseous or fibrous fusion.
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17
What is the resource link provided for further information on Post-Traumatic Distal Radioulnar Synostosis?
https://www.sciencedirect.com.
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18
What are the consequences of Madelung's Deformity on the distal radial articular surface?
Ulnar tilt and volar tilt.
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19
Is Syndactyly more commonly associated with skin fusion or bony fusion?
It is the most common developmental anomaly, associated with both skin and bony fusion.
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20
What is a significant characteristic of the luno-triquetral coalition?
It is the most common coalition among carpal bones.
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21
In Syndactyly, what typically occurs during the 5th week of fetal development?
The fusion of digits.
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22
Identify one acquired cause of Carpal Coalition.
Inflammatory arthritis.
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23
Identify one congenital cause of Carpal Coalition.
Failure of embryonic cartilaginous segmentation.
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24
How does Madelung's Deformity generally affect the ulna?
It may lead to dorsal subluxation or dislocation at the distal radioulnar joint (DRUJ).
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25
In Polydactyly, what is the common effect on fingers or toes?
An increase in their number.
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26
What is the likely outcome for the distal articular surface of the radius in patients with Madelung’s Deformity?
It experiences both ulnar and volar tilt.
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27
What age range is typically observed in clinical presentations of Syndactyly?
It is usually diagnosed at birth or shortly after.
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28
What distinguishing feature does Distal Radioulnar Synostosis demonstrate?
Abnormal fusion of the radius and ulna.
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29
What is a common consequence of abnormal development in carpal bones?
Carpal Coalition.
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30
What is considered a normal variant in wrist and hand congenital anomalies?
Syndactyly and Polydactyly can be considered normal variants in some cases.
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31
How does the presence of Madelung’s Deformity affect forearm movement?
It can limit or alter the range of motion due to the altered alignment of bones.
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32
What is the medical term for a fusion of two or more carpal bones?
Carpal Coalition.
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33
In what context would you'd find Madelung's Deformity mentioned?
In discussions of congenital deformities affecting the wrist and hand.
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34
What type of professional typically addresses conditions like Syndactyly and Polydactyly?
Pediatric orthopedic surgeons or hand specialists.
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35
How does Madelung's Deformity impact the relative length of the ulna?
It is usually longer in comparison to the radius.
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36
What links to further details on Polydactyly were provided?
http://radiopaedia.org/articles/polydactyly.
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37
Is Madelung’s Deformity commonly genetic in nature?
Yes, it can be associated with genetic syndromes.
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38
What is the role of imaging in diagnosing these wrist and hand anomalies?
Imaging assists in visualizing bone structure and abnormalities for proper diagnosis.
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39
What type of imaging course includes congenital anomalies like Syndactyly and Polydactyly?
RAD6210 - Normal Imaging of the Spine & Extremities.
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40
What is a frequent outcome of congenital anomalies in the wrist and hand?
Abnormal joint or bone development leading to functional impairment.
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