"Patella alta is a high-lying patella with a too-long patellar tendon. Its causes are often idiopathic. Although a lengthened tendon increases the lever arm of the patellar tendon, it predisposes the patient to other issues 3. These include a higher risk of patellofemoral instability and patellofemoral osteoarthritis due to abnormal contact areas 3,4."
"Patella baja is a low-lying patella with a too-short patellar tendon. Causes can be idiopathic, iatrogenic or trauma-related. Due to the shortened tendon, the lever arm of the patella tendon is reduced, resulting in reduced extension efficiency, extension lag, reduced range of motion and crepitus 5."
"Insall-Salvati ratio"
"Modified Insall-Salvati ratio"
"Caton-Deschamps index"
"De Carvalho index"
"Blackburne-Peel index"
"The Insall-Salvati ratio is the ratio of the patella tendon length against the greatest pole-to-pole length of the patella body, measured off a radiograph. It is considered one of the more reliable techniques of measuring patella height with a higher intra- and inter-observer reliability than all other published commonly used measurement techniques."
Expected headings
"Measurements"
"Insall-Salvati ratio"
"Modified Insall-Salvati ratio"
"Caton-Deschamps index"
"De Carvalho index"
"Blackburne-Peel index"
"Patellotrochlear index"
"Patellophyseal index"
"Patella baja is a low-lying patella with a too-short patellar tendon. Causes can be idiopathic, iatrogenic or trauma-related. Due to the shortened tendon, the lever arm of the patella tendon is reduced, resulting in reduced extension efficiency, extension lag, reduced range of motion and crepitus 5."
"Assessing for patella alta or baja is most reliably done radiographically by measuring the patella height 6. There are multiple published methods for assessing the patella height using radiographs, CTs and MRIs."
"uses: radiograph, CT and MRI 7,8"
"uses: radiograph, CT or MRI 9"
"Assessing for patella alta or baja is most reliably done radiographically by measuring the patella height 6. There are multiple published methods for assessing the patella height using radiographs, CTs and MRIs."