“ Meaning ‘low patella’, associated with previous trauma, polio, juvenile chronic arthritis and achondroplasia. PLAIN FILM • Insall-Salvat...
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Meaning ‘low patella’, associated with previous trauma, polio, juvenile chronic arthritis and achondroplasia.
PLAIN FILM
• Insall-Salvati ratio (tendon length/patella length): measured on lateral film (or sagittal reformat), ideally with the knee at 30° of flexion; ratio less thn 0.74 indicates ‘baja’ and >1.5 represents ‘alta’.
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