scholarly journals Comparison Between Ultrasonographic and Standing Magnetic Resonance Imaging Findings in the Podotrochlear Apparatus of Horses With Foot Pain

2021 ◽  
Vol 8 ◽  
Author(s):  
Laurence Evrard ◽  
Zoë Joostens ◽  
Maxime Vandersmissen ◽  
Fabrice Audigié ◽  
Valeria Busoni
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Flexor Tendon ◽  
Compact Bone ◽  
Navicular Bone ◽  
Foot Pain ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Radiographic Diagnosis ◽  
Signal Change

This prospective study aimed to blindly compare the ultrasonographic and standing magnetic resonance imaging (sMRI) findings in deep digital flexor tendon (DDFT), navicular bone, and navicular bursa in horses with foot pain, positive digital analgesia, and without definitive radiographic diagnosis. Ultrasonography detected more DDFT abnormalities (32/34 feet vs. 27/34 with sMRI) but identified less palmar navicular abnormalities (23/34 feet vs. 30/34 with sMRI). In suprasesamoidean DDFT lesions, which were mainly dorsally located, changes in echogenicity did not correspond to a particular pattern of sMRI signal change. Transcuneal ultrasonography did not allow assessment of morphology and extent of distal DDFT lesions, and sporadically discriminated the affected lobe compared to sMRI. Defects of the palmar compact bone were identified with both modalities except a parasagittal defect, which was only seen at sMRI.

Magnetic Resonance Imaging Findings After Elbow Dislocation: A Descriptive Study

Hand ◽  
2020 ◽  
pp. 155894472094996
Author(s):  
Cory Demino ◽  
John R. Fowler
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Flexor Tendon ◽  
Elbow Dislocation ◽  
Ulnar Collateral Ligament ◽  
Magnetic Resonance Images ◽  
Joint Effusion ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Collateral Ligament

Background The elbow is one of the most commonly dislocated joints, and dislocation is usually accompanied with an assortment of soft tissue injuries. The purpose of this study was to retrospectively analyze and describe the patterns of ligamentous, tendinous, and muscular injuries in patients with an acute elbow dislocation and subsequent magnetic resonance image (MRI) evaluation. Methods From 2008 to 2020, 235 patients clinically diagnosed with an elbow dislocation were seen in the department, of which only 19 underwent an MRI of the affected elbow. Twelve patients met inclusion criteria, and MRIs were evaluated by both a radiologist and an upper extremity orthopedic surgeon. Magnetic resonance images were assessed for injury to the ulnar collateral ligament (UCL); radial collateral ligament (RCL); lateral ulnar collateral ligament (LUCL); common flexor and extensor tendons; biceps, brachialis, and triceps tendons; fracture; and joint effusion. Results Magnetic resonance imaging findings included the following: UCL was injured in 11 of 12 patients; RCL was injured in 9 of 12 patients; LUCL was injured in 9 of 12 patients; common flexor tendon was injured in 11 of 12 patients; and common extensor tendon was injured in 9 of 12 elbows. The biceps, brachialis, and triceps tendons showed injury in 1 of 12, 2 of 12, and 2 of 12 elbows, respectively. Four elbows had at least 1 fracture present, whereas 8 demonstrated an effusion. Conclusions In this series, injuries to the UCL and common flexor tendon were most common. Although ligamentous injuries are exceedingly common in elbow dislocations, large studies of MRI findings prove difficult due to MRI costs.

Painful os cuboideum secundarium. Cross-sectional imaging findings

1996 ◽  
Vol 86 (3) ◽  
pp. 123-125 ◽  
Author(s):  
PM Logan ◽  
DG Connell ◽  
DL Janzen
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Foot Pain ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
Imaging Appearance ◽  
Cross Sectional Imaging ◽  
Sectional Imaging

The authors presented the computed tomography and magnetic resonance imaging appearances of a painful os cuboideum secundarium. To the authors' knowledge, this is the first report of the cross-sectional imaging appearance of this condition, and serves to underline the utility of computed tomography and magnetic resonance imaging in the investigation of foot pain.

scholarly journals Magnetic resonance imaging of diffusion characteristics following collagenase clostridium histolyticum injection in Dupuytren’s contracture

2021 ◽  
Vol 29 (3) ◽  
pp. 230949902110472
Author(s):  
Hiroko Iwakawa ◽  
Shigeharu Uchiyama ◽  
Yasunari Fujinaga ◽  
Masanori Hayashi ◽  
Masatoshi Komatsu ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Flexor Tendon ◽  
Tendon Sheath ◽  
Dupuytren’S Contracture ◽  
Collagenase Clostridium Histolyticum ◽  
Resonance Imaging ◽  
Dupuytren's Contracture ◽  
Clostridium Histolyticum ◽  
Signal Change

Purpose We aimed to evaluate the extent of collagenase clostridium histolyticum (CCH) diffusion in Dupuytren’s contracture (DC) for tissues outside of the contracture cord using Magnetic Resonance Imaging (MRI) immediately after CCH injection. Methods: 10 male patients aged 57–79 with DC of the metacarpophalangeal (MCP) joints were examined. Extension deficits were 10–60°(mean, 34.3) and 0–60°(mean, 26.6) in the MCP and proximal interphalangeal (PIP) joints, respectively. CCH injection was performed according to the standard method. MRI was performed within 15 min of CCH injection. Results: In all 10 cases, the extended area of high-intensity signal change outside of the cord was observed on short-T1 inversion recovery images (STIRs). Continuity from the insertion site was observed in the area of signal change involving the flexor tendon and neurovascular bundle. The signal change area spanned distally and proximally beyond the injection level. The signal change area expanded along the tendon sheath but no signal changes were observed inside the flexor tendon, suggesting the tendon sheath serves as a protective barrier from the CCH solution. After 1 week of injection, the mean decrease in contracture was 32.5°(94.7%) for the MCP joint and 19.8°(74.4%) for the PIP joint. In nine out of 10 cases, the extension deficit was within five degrees of full extension in the affected finger. There was no neurovascular injury or tendon rupture at 3 months of observation. Conclusions: MRI indicated the possible leakage of the drug outside of the cord during the early phase after administration, suggesting that CCH could persistently affect healthy tissues until CCH inactivates its enzyme process.

Sign in / Sign up

Export Citation Format

Share Document