It is important for a surgeon to recognize a Hill-Sachs lesion before treating a shoulder dislocation surgically. If the fracture is large and left untreated, the repair may not be successful. Treatment for a Hill-Sachs lesion is determined by how much the humerus head has been affected: 1  Observation-is the most common and generally successful treatment, especially if less than 20% of the humeral head has been affected.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  roll call(Noun) the reading aloud of a list of names, and subsequent responses, in order to determine who is present or absent. 2  roll call(Noun) the time of day fixed for such an event. 3  roll call(Noun) such an event in a legislative body in order to determine if a quorum exists.
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