Wednesday, June 23, 2010
Transient Patella Disclocation
With torn medial patello-femoral ligament and medial patella retinaculum. Note that impaction injury can occur almost anywhere at the lateral femoral condyle (although commonly anterolaterally).
Giant Tumefactive Perivascular Spaces
References:
http://www.ajnr.org/cgi/reprint/26/2/298.pdf
AJNR Am J Neuroradiol 26:298–305, February 2005
Thanks MG
Wednesday, June 9, 2010
Iliacus Muscle Contusion with Submuscular Haemorrhage
And minor rectus femoris tendon strain/low grade interstitial tear
MRI Appearance of Chronic Stress Injury of the Iliac Crest Apophysis in Adolescent Athletes
AJR 2008; 190:1487-1491
OA, MCL Oedema
Is intra-articular pathology associated with MCL edema on MR imaging of the non-traumatic knee?
Conclusions: We confirmed that MCL edema is associated with osteoarthritis, but is also associated with meniscal tears, meniscal extrusion, and chondromalacia. In addition, MCL edema can be seen in patients without intra-articular pathology, recent trauma or MCL abnormality on physical examination.
Donna G. Blankenbaker, Arthur A. De Smet and Jason P. FineArticle here:
http://www.springerlink.com/content/j15r7mh13004n65x/
http://www.google.com.au/#hl=en&q=oa+mcl+edema&aq=f&aqi=&aql=&oq=&gs_rfai=&fp=614b526983fd0727
Selective Atropy of Abductor Digiti Minimi Muscle
AJR 189 September 2007 http://www.ajronline.org/cgi/reprint/189/3/W123.pdf
"CONCLUSION: Selective fatty atrophy of the ADQ is not a rare finding on MR examination
of the foot and ankle, being seen in 6.3% of all studies and in 7.5% of all studies in females.The clinical relevance of selective ADQ atrophy seen on MRI is uncertain."
"CONCLUSION: Selective fatty atrophy of the ADQ is not a rare finding on MR examination
of the foot and ankle, being seen in 6.3% of all studies and in 7.5% of all studies in females.The clinical relevance of selective ADQ atrophy seen on MRI is uncertain."
October 2009 Radiology, 253, 160-166. http://radiology.rsna.org/content/253/1/160.fullFatty Muscle Atrophy: Prevalence in the Hindfoot Muscles on MR Images of Asymptomatic Volunteers and Patients with Foot Pain
Conclusion: Prevalence of fatty muscle atrophy of the ADM muscle—classically considered to represent entrapment neuropathy—is between 4% and 11% in both asymptomatic volunteers and patients with foot pain, and it increases with age.
Thanks VD
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