Leuconostoc mesenteroides periprosthetic knee infection, an unusual fastidious Gram-positive bacteria: a case report.

Background: Periprosthetic joint infections are mainly caused by Gram-positive cocci. Leuconostoc mesenteroides is a rare microorganism mainly causing bloodstream infections. At times, it might be confused with another type of cocci and give rise to misdiagnosed infections.

Central compartment release versus lesser trochanter release of the iliopsoas tendon for the treatment of internal snapping hip: a comparative study.

Purpose: To evaluate the results of 2 different techniques of endoscopic iliopsoas tendon release in the treatment of internal snapping hip syndrome.

Methods: Between January 2008 and January 2012, a consecutive series of patients with the diagnosis of internal snapping hip syndrome were treated with endoscopic release of the iliopsoas tendon. The patients were divided into 2 groups according to the surgical technique used.

Arthroscopic treatment of cam-type femoroacetabular impingement: preliminary report at 2 years minimum follow-up.

Femoroacetabular impingement is defined as anterior hip abutment between the acetabular rim and proximal femur. When it is secondary to acetabular overcoverage, it is pincer impingement. When it is secondary to femoral head and neck deformity, it is cam impingement.

[Effect of abrasion on three types of sutures in a metallic anchor].

It is necessary to slide the suture into the articulation in the arthroscopic techniques, this produce friction and abrasion of the suture, this is the principal cause of failure in the union of anchor-suture. We used a Fastak 2.4 anchor, Sawbones, No 2 Ethibond, No 2 Fiberwire and No 2 Herculine.

A minimalist approach to hip arthroscopy: the slotted cannula.

Adequate patient positioning with a traction device to provide sufficient distraction of the hip to access the femoral-acetabular joint is the first and most important step in hip arthroscopy. Cannulated instruments provide reproducible access to the hip joint from every portal by following guidewires into the joint. These guidewires are positioned through long spinal needles via fluoroscopic navigation and, subsequently, direct arthroscopic vision.