MRI of the Achilles tendon-A comprehensive pictorial review. Part one (2021)

Type of publication:
Journal article

Author(s):
Szaro P.; Nilsson-Helander K.; *Carmont M.

Citation:
European Journal of Radiology Open; Jan 2021; vol. 8

Abstract:
The normal Achilles tendon is composed of twisted subtendons separated by thin high signal septae, which are a potential pitfall on MRI because they mimic a tendon tear. Tendinopathy and full thickness tears may be assessed effectively both on MRI and ultrasound. MRI is superior to ultrasound in detection of partial tears and for postoperative assessment. The use of fat suppression sequences allows the ability to detect focal lesions. Sagittal and coronal sections are useful for assessing the distance between stumps of a ruptured tendon. Sequences with contrast are indicated in postoperative investigations and suspicion of infection, arthritis or tumor. MRI may reveal inflammatory changes with minor symptoms long before the clinical manifestations of seronegative spondyloarthropathy. The most common non-traumatic focal lesion of the Achilles tendon is Achilles tendon xanthoma, which is manifested by intermediate or slightly higher signal on T1- and T2-weighted images compared to that in the normal Achilles tendon. Other tumors of the Achilles tendon are very rare, whereas the involvement of the tendon from tumor in adjacent structures is more frequent. The novel MRI sequences may help to detect disorders of the Achilles tendon more specifically before clinical manifestation. Regeneration or remodeling of the Achilles tendon can be non-invasively detected and monitored in diffusion tensor imaging. Assessment of healing is possible using T2-mapping while evaluating the tendon vascularization in intravoxel incoherent motion MRI.

Link to full-text [open access – no password required]

Altmetrics:

Minimising negative ankle and foot X-rays in the Emergency Department-Are the Ottawa ankle rules good enough? (2014)

Type of publication:
Journal article

Author(s):
*Crosswell S, *Leaman A, *Phung W

Citation:
Injury, 12 2014, vol./is. 45/12(2002-4), 0020-1383;1879-0267 (2014 Dec)

Abstract:
OBJECTIVES: To review fracture rates in patients who had X-rays of either the ankle or foot or both in the Emergency Department of a district hospital.METHOD: A retrospective review of 2589 Emergency Department patients who had X-rays of the ankle or foot or both over a 12-month period.RESULTS: There were 1199 ankle X-rays taken of which 193 (16%) showed a significant fracture. There were 1081 patients who had a foot X-rayed of which 165 (15%) showed a significant fracture. Younger patients had more X-rays but older patients were more likely to have a fracture. There were 309 patients who had an ipsilateral ankle and foot X-rayed at the same time, and of these 42 (14%) showed one fracture and just two (0.6%) showed a significant fracture of both ankle and foot.CONCLUSIONS: The approach to X-raying ankle and feet in this study is probably widespread, and Ottawa Ankle Rules still seem to be of limited use in diagnosing fractures. This low yield of positive X-ray could be accepted or a more sophisticated ankle rule introduced. Copyright 2014 Elsevier Ltd. All rights reserved.

Link to more details or full-text: