OR-SM-36 fixtures are direct UVC germicidal fixtures used for surface and wound site disinfection before, during, and after the procedure, making the LED Direct Lighting OR Package a very smart choice for Operating Room disinfection.  
Lowered intensity during orthopedic procedures
Full power during disinfection cycles and before and after procedures
Preset daily timed disinfection cycles
The advantage of using ceiling mounted ultraviolet light fixtures in the OR, rather than a mobile device, is that the fixtures can be spaced out to create a more consistent pattern of energy - more angles provides better coverage.  
A typical installation will have 8-10 OR-SM-36 surface mounted fixtures on the ceiling: 
Four (4) fixtures mounted above the table: two parallel to the sides & two parallel to the head and foot
Remaining fixtures evenly spaced around the Operating Room for consistent energy distribution
The goal of this configuration is to lay down an even energy footprint that floods the room with UV disinfection light and eliminates, and minimizes, any shadowed areas. Mobile units currently on the market are limited in their energy footprint, and they also require multiple positions in order to have a similar impact.