VAS Pain intensity difference (PID) at each scheduled assessment time point after Time 0 VAS Pain intensity score at each scheduled assessment time point VAS SPID over 0 to 6 hours (SPID-6), over 0 to 12 hours (SPID-12), and over 0 to 24 hours (SPID-24) after Time 0 Summed pain relief (TOTPAR) (calculated as a time-weighted average) over 0 to 6 hours (TOTPAR-6), over 0 to 12 hours (TOTPAR-12), over 0 to 24 hours (TOTPAR-24) after Time 0, and over 0 to 48 hours (TOTPAR-48) after Time 0 Time to onset of analgesia (measured as time to perceptible pain relief confirmed by meaningful pain relief) using the two-stopwatch method Pain relief score on a 5-point categorical scale at each scheduled time point after Time 0 Peak pain relief Time to peak pain relief Time to first perceptible pain relief Time to meaningful pain relief Proportion of subjects using rescue medication Time to first use of rescue medication (duration of analgesia) Total use of rescue analgesia over 0 to 24 hours and over 0 to 48 hours Patient's global evaluation of study drug