Imaging Hip Problems in Athletes - University of Wisconsin-Madison
Imaging Hip Problems in Athletes - University of Wisconsin-Madison
Imaging Hip Problems in Athletes - University of Wisconsin-Madison
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4/11/2011<br />
Mechanisms <strong>of</strong> Imp<strong>in</strong>gement<br />
• Cam (“femoral”FAI)<br />
– Abnormal morphology anterior femoral headneck<br />
junction<br />
– Seen <strong>in</strong> younger <strong>in</strong>dividuals<br />
• P<strong>in</strong>cer (“acetabular” FAI)<br />
– Abnormal acetabulum contact<strong>in</strong>g a normal<br />
femur<br />
– More common <strong>in</strong> older women<br />
• Both types are common <strong>in</strong> athletes<br />
NORMAL<br />
CAM<br />
PINCER<br />
MIXED<br />
Philippon et al. Am J Sports Med 2007;35:1571<br />
Cl<strong>in</strong>ical Presentation<br />
Cam FAI<br />
• Slow onset <strong>of</strong> gro<strong>in</strong> pa<strong>in</strong> after m<strong>in</strong>or<br />
trauma<br />
– Intermittent<br />
– Exacerbated by athletic activities, walk<strong>in</strong>g<br />
• PE P.E.<br />
– Limitation <strong>of</strong> motion<br />
• Internal rotation and adduction <strong>in</strong> flexion<br />
– Positive imp<strong>in</strong>gement test<br />
29 y/o man with hip pa<strong>in</strong><br />
Radiographic f<strong>in</strong>d<strong>in</strong>gs can “predispose” to cam FAI<br />
Klaue K. J Bone Jo<strong>in</strong>t Surg 1991;73B:423-429.<br />
Cam FAI<br />
Sag T1FS<br />
Bilateral FAI changes<br />
20 year-old man with bilateral hip pa<strong>in</strong><br />
Cor T1FS<br />
Femoral<br />
bump<br />
Axial oblique T1FS<br />
Axial oblique T1FS<br />
7
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