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.
Noun meaning act of gathering troops is c.1400. To pass musters (1570s) originally meant to undergo military review without censure.. To muster out gather to be discharged from military service is 1834, Amer.Eng. To muster up in the fig. and transf. sense of gather, summon, marshal is from 1620s. Related: Mustered; mustering.