Insall-Salvati Ratio: Difference between revisions
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{{Qualityalert}} | {{Qualityalert}} '''<font color="red">To edit: general formatting, addition of images</font>''' <br> | ||
The Insall-Salvati ratio is the ratio of the | <br> The Insall-Salvati ratio is the ratio of the patellar tendon length to the length of the patella. This can be measured on a lateral knee xray or sagittal MRI. Ideally the knee is 30 degrees flexed. | ||
In the modified Insall-Salvati ratio, patellar bone length is replaced with patellar articular cartilage length. The Insall-Salvati index, however, is the most widely accepted method because of its lack of dependence on the degree of knee flexion and its established MRI criteria <ref>Syed A. Ali, Robert Helmer and Michael R. Terk; Patella Alta: Lack of Correlation Between Patellotrochlear Cartilage Congruence and Commonly Used Patellar Height Ratios; AJR November 2009 vol. 193 no. 5 1361-1366. (Level of evidence: B)</ref><ref>JEROLD E et al; Patella Alta and Patella Infera, THEIR ETIOLOGICAL ROLE IN PATELLAR DISLOCATION, CHONDROMALACIA, AND APOPHYSITIS OF THE TIBIAL TUBERCLE; J Bone Joint Surg Am. 1975 Dec;57(8):1112-5. (Level of evidence: B)</ref> | In the modified Insall-Salvati ratio, patellar bone length is replaced with patellar articular cartilage length. The Insall-Salvati index, however, is the most widely accepted method because of its lack of dependence on the degree of knee flexion and its established MRI criteria. <ref>Syed A. Ali, Robert Helmer and Michael R. Terk; Patella Alta: Lack of Correlation Between Patellotrochlear Cartilage Congruence and Commonly Used Patellar Height Ratios; AJR November 2009 vol. 193 no. 5 1361-1366. (Level of evidence: B)</ref><ref>JEROLD E et al; Patella Alta and Patella Infera, THEIR ETIOLOGICAL ROLE IN PATELLAR DISLOCATION, CHONDROMALACIA, AND APOPHYSITIS OF THE TIBIAL TUBERCLE; J Bone Joint Surg Am. 1975 Dec;57(8):1112-5. (Level of evidence: B)</ref> | ||
== References == | == References == | ||
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[[Category:Knee]] [[Category:Musculoskeletal/Orthopaedics|Orthopaedics]] | [[Category:Assessment]] [[Category:Special_Tests]] [[Category:Knee]] [[Category:Musculoskeletal/Orthopaedics|Orthopaedics]] | ||
Revision as of 17:35, 3 May 2015
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To edit: general formatting, addition of images
The Insall-Salvati ratio is the ratio of the patellar tendon length to the length of the patella. This can be measured on a lateral knee xray or sagittal MRI. Ideally the knee is 30 degrees flexed.
In the modified Insall-Salvati ratio, patellar bone length is replaced with patellar articular cartilage length. The Insall-Salvati index, however, is the most widely accepted method because of its lack of dependence on the degree of knee flexion and its established MRI criteria. [1][2]
References[edit | edit source]
- ↑ Syed A. Ali, Robert Helmer and Michael R. Terk; Patella Alta: Lack of Correlation Between Patellotrochlear Cartilage Congruence and Commonly Used Patellar Height Ratios; AJR November 2009 vol. 193 no. 5 1361-1366. (Level of evidence: B)
- ↑ JEROLD E et al; Patella Alta and Patella Infera, THEIR ETIOLOGICAL ROLE IN PATELLAR DISLOCATION, CHONDROMALACIA, AND APOPHYSITIS OF THE TIBIAL TUBERCLE; J Bone Joint Surg Am. 1975 Dec;57(8):1112-5. (Level of evidence: B)
