Patellar Tendon Rupture with Intact Overlying Prepatellar Quadriceps Continuation: A Case Report
Journal Title: Journal of Orthopaedic Science and Research - Year 2024, Vol 5, Issue 2
Abstract
Introduction: The prepatellar quadriceps continuation is an aponeurotic layer and arises downwards anteriorly over the patella originating from the rectus femoris tendon. A wide variance in thickness of the prepatellar quadriceps continuation has been described. This continuation could potentially remain intact following a patellar tendon rupture mimicking an intact patellar tendon during diagnostic ultrasonography. Case presentation: We report a 43-year-old female patient with an injured knee after a direct blow during soccer. The patient was unable to actively extend her leg. After physical and conventional X-ray examination, a patellar tendon rupture was suspected. However, ultrasound demonstrated an elongated course of the patellar tendon without evidence of a rupture. An additional MRI scan revealed a complete patella tendon rupture with an intact overlying prepatellar quadriceps continuation as a normal variant. Conclusion: A dysfunctional extensor mechanism and patella alta on conventional radiographs is pathognomonic for a ruptured patellar tendon. MRI is the preferred imaging method in case of discrepancy between the clinical presentation and ultrasound findings since there are normal variants of the extensor mechanism.
Authors and Affiliations
Rinne M Peters1,2*, Louren M Goedhart1,3, Reinoud W Brouwer1
Keywords
Related Articles
- EP ID EP741592
- DOI https://doi.org/10.46889/JOSR.2024.5206
- Views 64
- Downloads 0
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