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Inferior medial trochlear ridge can be a donor site for osteochondral autologous transplantation
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For osteochondral autologous transplantation surgery as management of osteochondritis dissecans, the inferior medial trochlear ridge should be considered as a donor site due to its accessibility and favorable geometry, according to results.
Researchers analyzed 21 patients with osteochondritis dissecans and compared them to 22 patients with normal elbows and 25 age-, weight- and height-matched patients with normal knees. Researchers measured the cartilage radii of curvatures in the sagittal and coronal-axial planes on MRI of the normal capitellum, as well as the posterior lateral femoral condyle, medial and lateral middle trochlear ridges, and the medial and lateral interior trochlear ridges in normal knees. Based on a 10-mm osteochondral plug diameter, researchers calculated differences in radii of curvatures between the knee donor and capitellar recipient sites.
Donald Bae
Results showed the mean apex differences between the graft and recipient sites ranged from 0.4 mm to 0.9 mm, and the mean edge differences in the coronal-axial dimension ranged from 0.5 mm to 1.4 mm. Researchers found the average radii of curvatures in the posterior lateral femoral condyle were most like the capitellum. This resulted in minimal apex and edge differences, according to results. Researchers also noted the lowest apex and side differences were demonstrated in the inferior medial trochlear ridge of the anterior non-weight-bearing sites vs. the capitellum. The largest side difference was found in the frequently used middle lateral trochlear ridge, according to results. – by Casey Tingle
Disclosure: The researchers report no relevant financial disclosures.
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