Large intra-articular true lipoma of the knee.

BACKGROUND: Intra-articular lipomas are rare and very few cases have been reported in the knee. To the best of our knowledge, here we report the largest lipoma to have ever been observed in the knee. It is crucial to avoid the misdiagnose of lipoma arborescens, which is associated with degenerative joint disease. Lipoma is a homogeneous, ovoid, adipose tissue tumor that is contained within a fibrous capsule and not associated with previous disease. CASE PRESENTATION: A 48-year-old male, with a soft-tissue tumor on the superomedial aspect of the right knee. Magnetic resonance imaging (MRI) revealed an intra-articular lipoma. The mass was resected by means of a limited arthrotomy. CONCLUSIONS: Knee lipoma is an extremely rare disease that must be diagnosed by MRI. Where possible, it should be resolved by arthroscopic resection.

Medial Patellofemoral Ligament Reconstruction: Use of All-Suture Anchors for Patellar Fixation and a Dynamic Femoral Attachment.

The medial patellofemoral ligament is one of the most relevant structures preventing patellar dislocation. Numerous surgical techniques have been described to reconstruct this structure and patellar biomechanics. Complications after this procedure concern both patella and femur. This technique avoids tunneling the patella and the use of intraoperative radiographs by using the adductor magnus tendon insertion.