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Brian P. Jacob, David C. Chen, Bruce Ramshaw, Shirin Towfigh (eds.) - The SAGES Manual of Groin Pain-Springer International Publishing (2016)

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76<br />

J.C. Campbell and G.D. Paiement<br />

Fig. 8.2. <strong>The</strong> extent <strong>of</strong> external rotation <strong>of</strong> the hip is assessed with the hip in 90<br />

degrees <strong>of</strong> flexion.<br />

<strong>Groin</strong> <strong>Pain</strong> from the Bone<br />

Architectural Problem<br />

Osteoarthritis<br />

Presentation Osteoarthritis (OA) is extremely common in an aging<br />

patient population. It is estimated to affect 60 million Americans by the<br />

year 2020 [ 5 ]. In any patient over 50 years, it should be high on one’s<br />

differential as the cause <strong>of</strong> groin pain. Most patients with OA present

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