Patellar Instability - Knee & Sports - Orthobullets
2024年12月30日 · Patellar instability is a condition characterized by patellar subluxation or dislocation episodes as a result of injury, ligamentous laxity or increased Q angle of the knee.
The J-sign in patellar maltracking - BMJ Case Reports
The J-sign refers to the inverted ‘J’ track the patella takes from extension to early flexion (or vice versa) in a maltracking patella. The laterally subluxated patella suddenly shifts medially as it …
The J-sign in patellar maltracking - PMC
The J-sign refers to the inverted ‘J’ track the patella takes from extension to early flexion (or vice versa) in a maltracking patella. The laterally subluxated patella suddenly shifts medially as it …
Knee Patella Instability – “J Sign” - Ashvin K Dewan, MD
The J sign is a physical exam observation that correlates with poor patellar tracking. The patella takes an inverted J shaped path as flexion is initiated from a fully extended position. It …
J-sign - KNEEguru
The presence of a J-sign indicates that the trochlear groove of the femur, in which it runs, is not managing to constrain it as the knee goes into extension. This may be because of a shallow …
Clinical J Sign in the Evaluation of Patellofemoral Pain
2014年11月25日 · The presence of the J sign helps to confirm dynamic patellar maltracking and suggests patella alta as the anatomical etiology of recurrent lateral subluxation. Biomechanical …
Q-angle and J-sign: Indicative of Maltracking Subgroups in ...
Q-angle, lateral hypermobility, and the clinical J-sign may not be accurate gauges of lateral subluxation during dynamic activity. Distinct maltracking subgroups do exist in the patellar …
To help assess patellar instability, the clinical J-sign test consists of observing the patella translate laterally in the shape of an inverted J over the anterolateral femur proximal to the trochlear …
What is the J-sign and why is it important? - PubMed
2023年2月1日 · The J-sign is most predominantly associated with patella alta, trochlear dysplasia, lateral force vector, and rotational abnormalities. A growing number of studies have shown a …
What is the J-sign and why is it important? - Post - Orthobullets
The J-sign is most predominantly associated with patella alta, trochlear dysplasia, lateral force vector, and rotational abnormalities. A growing number of studies have shown a correlation …