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. Fine

Article 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."

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.

http://musculoskeletalmri.blogspot.com/2008/01/selective-atrophy-abductor-digiti.html

Thanks VD

Bilateral Quadratus Femoris Oedema ? Muscle strain or tear

Hypothesis that this may be due to impingement between lesser trochanter and ischial tuberosity (see AJR letter)

Ischiofemoral Impingement Syndrome: An Entity With Hip Pain and Abnormalities of the Quadratus Femoris Muscle: AJR 2009; 193:186-190; http://www.ajronline.org/cgi/content/full/193/1/186

http://www.ajronline.org/cgi/content/full/190/6/W379

http://www.ajronline.org/cgi/content/full/190/6/W380

Quadratus Femoris Muscle Strain or Minor Tear

Patellar Tendon-Lateral Femoral Condyle Friction Syndrome (PT-LFCFS)

Also known as "Fat Pad Impingement Syndrome"

Good article here courtesy of Radsource http://www.radsource.us/clinic/0809