Figure 4. Hotplate latencies versus time as a measure of (A) sensory function versus time and (B) motor function scores versus time for bupivacaine microspheres (B-Ms) (n = 4), B-Ms with 0.5 mg/kg dexamethasone reinjected 6 h later (n = 4), and B-Ms with vehicle reinjected 6 h later (n = 4).