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Lesion in the medial malleolus

Case Study
Dorn, Eric, M.D. Glendale, Orthopaedic Hospital of Wisconsin USA
Ahrens, Mark, BS RT (R) (MR) Glendale, Orthopaedic Hospital of Wisconsin USA

Patient history

A 46-year-old male with prior posterior chevron medial malleolar osteotomy and medial talar osteochondral lesion repair underwent an MR examination at Orthopaedic Hospital of Wisconsin.

MR examination

The Achieva 1.5T SE with the 8-channel SENSE Foot/Ankle coil was used.


The images show an irregular osteochondral lesion of the posterior medial talar dome with cystic subchondral degenerative changes. There are postoperative changes around the posteromedial ankle including retinacular scarring, posterior tibial tendinosis, and prior medial malleolar osteotomy. 4 mm slices, 14 cm FOV.


MRI helped visualize postoperative changes around the posteromedial ankle including the talar dome osteochondral lesion and the medial tibotalar degenerative changes.

Clinical impact of the Achieva 1.5T SE:

The Achieva 1.5T SE offers a tenfold improvement in homogeneity compared with standard entry-level systems, and this reflects dramatically on the system's off-center imaging. Achieva 1.5T SE provides very good fat-suppressed imaging with the arms by the sides. With the 8-channel SENSE Foot/Ankle coil beautiful image quality is seen. The system is able to still maintain good SNR while working at these very small FOVs.

Related reading:

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Jan 20, 2011

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Case Study
Achieva 1.5T
Release 2.5, Release 2.6
Nova, Nova Dual, Pulsar
Ankle, Foot, Musculoskeletal, Oncology, osteochondral lesion

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