Diagnostic sensitivity and specificity of dynamic three-dimensional CT analysis in detection of cam and pincer type femoroacetabular impingement

Table 2 sensitivity, specificity, PPV^a and NPV^b for cam type morphology comparing radiographs and dynamic CT scans with the per-operative assessment

	Sensitivity	Specificity	PPV^a	NPV^b
Alpha angle on X-ray	84%	72%	88%	63%
Dynamic CT impingement	90%	43%	79%	64%

ISSN: 1471-2474