Montgomery County officials acknowledged Thursday they’d received subpoenas in a widening federal probe of potential Montgomery police disability retirement abuses, while council members learned that the board that approves disabilities lacks a specialist in the largest category of injury claims.

County council members were stunned to learn that no doctor who specializes in orthopedic medicine has sat on the disability review panel in the past 10 years, when 91 percent of those seeking disability retirement have had orthopedic problems like back, hip and knee injuries.