Estudo anatômico do ligamento patelofemoral lateral em joelho de cadáveres

Shneider

2014

Medial patellar subluxation (MPS) is a disabling, often iatrogenic patellar instability due to previous lateral release for patellar instability. Lateral release destabilizes the patella on the lateral side, worsening the initial lateral instability and causing MPS. MPS is poorly recognized and may range from subluxation to true dislocation. This report describes a technique developed in response to episodes of medial and lateral patellar subluxation after failed lateral release for patellar instability. The technique uses a graft that extends from the medial patellofemoral ligament origin through the quadriceps tendon to the lateral epicondyle, thereby reconstructing both the medial and lateral patellofemoral ligaments, as well as providing simultaneous stability to both the medial and lateral sides of the patella.

Section: Discussionmentioning

confidence: 99%

Simultaneous Medial and Lateral Patellofemoral Ligament Reconstruction for Combined Medial and Lateral Patellar Subluxation

Shneider

2014

Lateral Patellofemoral Ligament Reconstruction Using a Quadriceps Tendon Graft

Shneider

2014

Medial patellar subluxation (MPS) is normally described after a lateral retinacular release. However, isolated MPS in the absence of a previous lateral release does occur. This type of patellar instability is often overlooked, and a high index of suspicion is needed for appropriate diagnosis and treatment. This report describes a technique developed in response to episodes of isolated MPS. The technique uses a partial-thickness graft from the quadriceps tendon to reconstruct the lateral patellofemoral ligament and provide stability to the lateral side of the patella. Medial patellar instability is a disabling condition that can limit daily functional activities because of apprehension and pain. The instability is influenced by a variety of factors that allow the patella to translate medially and ultimately subluxate or dislocate to the medial side. In patients with normal trochlear and patellar osseous anatomy and lower extremity alignment, the patellar instability results from insufficient passive soft-tissue stabilizers.

Lateral Patellofemoral Ligament Reconstruction With a Gracilis Allograft

2018

Isolated medial patellar subluxation (MPS), in the absence of a previous lateral retinacular release, is a poorly recognized clinical condition characterized by chronic anterior knee pain that is exacerbated with knee flexion. This type of patellar instability is often overlooked, and a high index of suspicion is needed for appropriate diagnosis and treatment. The purpose of this Technical Note is to describe a surgical technique to reconstruct the lateral patellofemoral ligament with an allograft gracilis tendon. By restoring stability to the lateral side of the patella, this minimally invasive technique successfully treats cases of isolated MPS.