The Orthobullets Podcast Foundations⎪Knee & Sports⎪Patellar Instability
Apr 26, 2025
Dive into the complexities of patellar instability! Discover its causes and how prevalent it is among various populations. The discussion covers essential diagnostic strategies and offers insights into both non-operative and surgical treatment options. Real-case scenarios bring these management decisions to life, showcasing effective solutions for patients across all age groups. Perfect for frontline MSK providers looking to enhance their foundational knowledge!
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Patellar Instability Spectrum & Diagnosis
- Patellar instability ranges from subluxation to dislocation caused by injury, ligamentous laxity, or increased knee Q angle.
- Diagnosis involves clinical exam signs like traumatic knee effusion acutely and positive J sign chronically.
Demographics & Risk Factors
- Patellar instability commonly affects young adults in their 20s and 30s, with risk factors including ligamentous laxity, prior instability, and 'miserable malalignment syndrome.'
- This syndrome includes femoral antiversion, genu valgum, and external tibial torsion causing increased Q angle.
Imaging Essentials for Diagnosis
- Radiographs are essential to rule out fracture or loose bodies and assess alignment, patellar height, and trochlear dysplasia.
- Specific views include AP for alignment, lateral for dysplasia, and sunrise/Merchant for tilt assessment.