Table 1

 Summary of incidence of symptoms

Symptom descriptionNumber of subjectsMRI positive
Values in parentheses are percentages.
MRI, Magnetic resonance imaging; PE, physical examination.
(1) Asymptomatic at the time of PE/scanning30 (58)13 (43)
(2) Asymptomatic always23 (44)10 (43)
(3) Asymptomatic at time of PE/scanning but symptomatic (pain only) previously7 (13)3 (43)
(4) Symptomatic at the time of PE/scanning22 (42)14 (64)
    Pain only13 (25)8 (61)
    Instability only4 (8)2 (50)
    Pain and instability5 (10)4 (80)
(5) Symptomatic (pain) always11 (21)8 (73)
(6) Symptomatic at time of PE/scanning but asymptomatic (no pain) previously8 (15)5 (62)