Evaluation of the radiographic infrapatellar fat pad sign of the contralateral stifle joint as a risk factor for subsequent contralateral cranial cruciate ligament rupture in dogs with unilateral rupture

96 cases (2006-2007)

Mark C. Fuller, Kei Hayashi, Kenneth A. Bruecker, Ian G. Holsworth, Jessie S. Sutton, Philip H Kass, Brett J. Kantrowitz, Amy Kapatkin

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Objective-To determine prevalence of the contralateral radiographic infrapatellar fat pad sign and contralateral radiographic degenerative sign (degenerative changes) and evaluate both signs as risk factors for subsequent contralateral cranial cruciate ligament (CrCL) rupture in dogs with unilateral CrCL rupture. Design-Retrospective cohort study. Animals-96 dogs with unilateral CrCL rupture and 22 dogs with bilateral CrCL rupture. Procedures-Dogs with unilateral CrCL rupture were classified as having normal (n = 84) or abnormal (12) contralateral stifle joints on the basis of joint palpation. Associations between potential predictive variables and rates of subsequent contralateral CrCL rupture were evaluated. Results-Of the 84 dogs with unilateral CrCL rupture in which the contralateral stifle joint was palpably normal, 29 (34.5%) had a contralateral fat pad sign and 31 (36.9%) had a degenerative sign. All dogs with unilateral CrCL rupture in which the contralateral stifle joint was palpably abnormal had a contralateral fat pad sign and degenerative sign. The contralateral fat pad sign was the most important risk factor for subsequent rupture of the contralateral CrCL. For dogs with unilateral CrCL rupture and palpably normal contralateral stifle joint with and without a contralateral fat pad sign, median time to subsequent rupture was 421 and 1,688 days, respectively, and the 3-year probability of subsequent rupture was 85.3% and 24.9%, respectively. Conclusions and Clinical Relevance-Bilateral stifle joint radiography should be performed for all dogs with CrCL rupture. Bilateral stifle joint arthroscopy should be considered for dogs with a contralateral fat pad sign.

Original languageEnglish (US)
Pages (from-to)328-338
Number of pages11
JournalJournal of the American Veterinary Medical Association
Volume244
Issue number3
DOIs
StatePublished - Feb 1 2014

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Stifle
cranial cruciate ligament
Anterior Cruciate Ligament
Adipose Tissue
Rupture
risk factors
Joints
Dogs
dogs
lipids
joints (animal)
arthroscopy
radiography
cohort studies
Palpation
Arthroscopy
Radiography

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Evaluation of the radiographic infrapatellar fat pad sign of the contralateral stifle joint as a risk factor for subsequent contralateral cranial cruciate ligament rupture in dogs with unilateral rupture : 96 cases (2006-2007). / Fuller, Mark C.; Hayashi, Kei; Bruecker, Kenneth A.; Holsworth, Ian G.; Sutton, Jessie S.; Kass, Philip H; Kantrowitz, Brett J.; Kapatkin, Amy.

In: Journal of the American Veterinary Medical Association, Vol. 244, No. 3, 01.02.2014, p. 328-338.

Research output: Contribution to journalArticle

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abstract = "Objective-To determine prevalence of the contralateral radiographic infrapatellar fat pad sign and contralateral radiographic degenerative sign (degenerative changes) and evaluate both signs as risk factors for subsequent contralateral cranial cruciate ligament (CrCL) rupture in dogs with unilateral CrCL rupture. Design-Retrospective cohort study. Animals-96 dogs with unilateral CrCL rupture and 22 dogs with bilateral CrCL rupture. Procedures-Dogs with unilateral CrCL rupture were classified as having normal (n = 84) or abnormal (12) contralateral stifle joints on the basis of joint palpation. Associations between potential predictive variables and rates of subsequent contralateral CrCL rupture were evaluated. Results-Of the 84 dogs with unilateral CrCL rupture in which the contralateral stifle joint was palpably normal, 29 (34.5{\%}) had a contralateral fat pad sign and 31 (36.9{\%}) had a degenerative sign. All dogs with unilateral CrCL rupture in which the contralateral stifle joint was palpably abnormal had a contralateral fat pad sign and degenerative sign. The contralateral fat pad sign was the most important risk factor for subsequent rupture of the contralateral CrCL. For dogs with unilateral CrCL rupture and palpably normal contralateral stifle joint with and without a contralateral fat pad sign, median time to subsequent rupture was 421 and 1,688 days, respectively, and the 3-year probability of subsequent rupture was 85.3{\%} and 24.9{\%}, respectively. Conclusions and Clinical Relevance-Bilateral stifle joint radiography should be performed for all dogs with CrCL rupture. Bilateral stifle joint arthroscopy should be considered for dogs with a contralateral fat pad sign.",
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