sunny2
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Ankylosing Spondylitis
A. associated with reduced lung vital capacity
B. associated with Sacroiliitis in 30-50% of patients
C. Rarely involves the cervical spine
D. Is morwe common in females
E. Is characterized radiographicaly by a marked loss of intervertebral disc height and spinal ankylosis
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| frontal
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Assuming the question to be- what is INCORRECT regarding Ankylosing Spondylitis, I'll go for D.
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| sunny2
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The question does not say that you have to pick what is incorrect , it has a correct answer so think in positive mode
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| frontal
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Ouchh...that brought out the pessimist in me! Now, I change my answer to C. It's true, it rarely involves the cervical spine.
I made rather hurried conclusions with the first answer. Sorrries.
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| achilles
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C.
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| sunny2
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think a little more in depth, i'll tell you it involves the cervical spine like it does with other levels, then why did you and achilles have chosen C.... yeah ....you ought to be correct if you say that it's very uncommon for this condition not to involve the sacroiliac joint.
please correct me if I am wrong, it is a discussion
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| achilles
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well sunny, cervical spine is only rarely,if ever, affected and only late in the disease for sure. it is not common(like you said). so C is not a unreasonable option.
but ankylosing spondylitis is also associated with choice B,sacroilitis(which is one of the earliest finding), but i dont know how frequent or infrequent it is. i guess it should be more common than 30-50% as there is eventual fusing of the sacroiliac joiint alongwith loss of joint space and formation of bamboo spine(choice E) which is the hallmark of this disease.
whats the source of your questions sunny ?
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| sunny2
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Achilles, If I am not wrong you have cited quotes from KAPLAN -medicine, and I too remember reading those, but those are only synopsis of a particular professor, they are good but i use Harrison Internal medicine and Toronto notes as base.
You may want to find out more but I am not wrong in saying that cervical spine involvement is not a rare event, its just that sacroiliac is common.
would you agree if i say that postural changes include
increased dorsal kyphosis,decreased lumbar lordosis and forward protrusion of cervical spine- this is an explanation of a classic picture of a person with ankylosing spondylitis.
for quick refrence visit this site and get back with your inputs . I will try to clarify with the explanation of the correct answer.
http://www.arthritis.ca/types%20of%20arthritis/as...
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| yasmeen
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can,t it be a as ankylosing spondylitis as it is associated with pulmonary fibrosis making it a restrictive lung disease. i,ll choose a
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| achilles
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yes sunny...my reference is kaplan notes and i believe it is very good.
and i agree with yasmeen too.
 in all probabilities this question probably asked what is incorrect(like frontal had already predicted) and the answer is D then.
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| msyamp
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ya it shud be asking INCORRECT Ans D
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| sunny2
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Yasmeen..very good, you tried to think logically...that is very good for this type of exam ,keep it up !!
Answer is. A
Ankylosing spondylitis reduces the mobility of the spine and the ribs and will reduce the lung vital capacity.
Most of the spine, including it's cervical region is commonly involved,hallmark of the diesease is often the invovement of sacroiliac joint.
( Reference- Harrison-ankylosing spondylitis)
decreased chest wall expansion (normal >5cm at T4 )
(Reference- Toronto Notes )
Approximately 90% of patients are male.
X-ray changes - I have mentioned earlier.
I hope this helps.
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| msyamp
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thank you sunny
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| achilles
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thanks for the info and the correction sunny. it surely was helpful.
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