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Fig. 2 | Journal of Orthopaedic Surgery and Research

Fig. 2

From: Risk factors for iliopsoas impingement after total hip arthroplasty using a collared femoral prosthesis

Fig. 2

Measurement of collar protrusion length (CPL). Point A represents the medial aspect of the calcar and point B represents the medial aspect of the metal collar. d represents the diameter of coin measured on the X-ray. CPL was measured as the distance between the vertical line across points A and B, after correction for magnification. A positive CPL represents overhang of the collar over the calcar

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X