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Biomedical subjects

E F Downey

Publications and source records attributed to E F Downey.

At least 19 recordsLinked to original sources
PubMed1986

Patient-induced stress test of the first metacarpophalangeal joint: a radiographic assessment of collateral ligament injuries.

The metacarpophalangeal (MCP) joint of the thumb is frequently injured, and the extent of soft-tissue injury is sometimes difficult to determine clinically. Routine radiographs are often normal, without evidence of a fracture. Radiographs obtained during patient-induced stress of the first MCP joint can show significant collateral ligament injury. It is important to make an early diagnosis of collateral ligament rupture.

Adolescent↗
PubMed1984

Importance of soft-tissue evaluation in hand and wrist trauma: statistical evaluation.

Four radiologists reviewed 197 hand and wrist radiographs to determine the usefulness of routine soft-tissue evaluation in the delineation of bony trauma. Soft-tissue changes at four sites in the lateral view were evaluated. Dorsal-hand fat-plane swelling was associated with second through fifth metacarpal fractures (p less than 0.01). Dorsal-wrist fat-plane swelling was associated with carpal fractures and wrist dislocations (p less than 0.01). Pronator and dorsal radial swelling were both associated with forearm fractures and carpal dislocations (p less than 0.01). Soft-tissue changes at five sites in the posteroanterior view were evaluated. Thenar swelling was associated with thumb metacarpal fractures and dislocations (p less than 0.01). Hypothenar swelling was associated with second through fifth metacarpal fractures and dislocations (p less than 0.01). Navicular fat-pad swelling was associated with carpal fractures (p less than 0.01) and strongly suggested a navicular fracture when present. Pararadial swelling was significantly associated with distal radial fractures (p less than 0.01), while paraulnar swelling was significantly associated with ulnar fractures (p less than 0.01). The lateral view of the hand and wrist is useful in compartmentalizing fractures to the hand, wrist, and forearm. Swelling in any compartment should lead to closer evaluation of all bony structures contained within that compartment. The soft tissues found in the posteroanterior view of the hand and wrist help further localize hand and wrist fractures. Additional views should be considered when significant swelling is present in the absence of an obvious fracture or dislocation. When more than one fat plane is unequivocally disturbed, protective immobilization with reexamination in 10 days is recommended.

Adipose Tissue↗
PubMed1983

A simple first metacarpophalangeal stress test.

An anteroposterior view of the first metacarpophalangeal joint with patient-induced adduction and abduction stress is described. Radial and ulnar instabilities are illustrated. The importance of making a diagnosis of collateral ligament rupture is stressed.

Finger Injuries↗
PubMed1983

Unusual dislocations of the shoulder.

Erect (luxatio erecta) and superior glenohumeral dislocations are extremely uncommon. In luxatio erecta, the humeral head is subglenoid or subcoracoid just as in the more common anterior dislocation, but the shaft of the humerus is parallel to the spine of the scapula, not parallel to the chest wall as seen in the anterior type. Superior dislocations have the humeral head overlying the acromion or the clavicle on the anteroposterior radiograph. Radiographic findings in seven cases are presented and some of the associated complications are discussed.

Acromion↗
PubMed1982

CT of benign cystic teratomas.

The computed tomographic (CT) findings in nine benign cystic teratomas are presented and compared with radiographic, sonographic, and pathologic data. CT rendered a specific diagnosis in six cases and was highly suggestive in two, with results superior to other imaging methods. In each instance, CT was successful in predicting or excluding invasion of adjacent structures, but was not reliable in predicting or excluding adherence to them. Specific CT characteristics of benign cystic teratomas are predominantly fatty mass with a denser dependent element and globular calcification, bone, or teeth in a solid protuberance into the cyst cavity. Suggestive patterns include fatty mass with rim calcification and water density mass with globular calcification and solid tissue elements. Illustrated for the first time are the CT appearances of the different calcifications seen in benign cystic teratomas.

Abdominal Neoplasms↗