[Interscalene block for total shoulder arthroplasty: comparative study (ultrasound vs. neurostimulation)].

Background: Modern anesthesiology has integrated the use of ultrasonography as a tool that has displaced neurostimulation as a technique for locating peripheral nerves. The aim of this study was to determine which procedure is more effective for guiding interscalene block for total shoulder arthroplasty.

Methods: We carried out a comparative, prospective non-randomized study comprised of the group guided by neurostimulation interscalene block and the group guided by ultrasound.

Rotator cuff repair augmentation using a novel polycarbonate polyurethane patch: preliminary results at 12 months' follow-up.

Background: Preventing anatomic failure after rotator cuff repair (RCR) remains a challenge. Augmentation with a surgical mesh may permanently reinforce the repair and decrease failure rates. The purpose of this study is to assess the postoperative outcomes of open RCR augmented with a novel reticulated polycarbonate polyurethane patch.

[Cost analysis and economic impact of anterior cruciate ligament reconstruction].

Introduction: Health economics studies play an important role in all healthcare systems. The purpose of the latter is to offer effective and low-cost treatments.

Objective: Analyze the costs and the economic impact of the comprehensive ACL treatment.

[Results of arthroscopic debridement and lavage in patients with knee osteoarthritis].

Introduction: Knee osteoarthritis (OA) is a degenerative process that affects people over 50 years old and is an important cause of disability. Treatment options include non-operative and operative modalities. Arthroscopic lavage and debridement may be the first choice to consider in patients between 45 and 65 years with early OA.

[Open surgical treatment in post-traumatic elbow stiffness].

Purpose: To show how open treatment of the elbow stiffness offers an improvement in the range of motion, pain control, and patient's satisfaction.

Methods: We present a case series analysis of patients who suffer elbow stiffness and were treated with open surgery. We analyzed the range of motion (ROM), visual analogue scale (VAS) for pain and satisfaction, and the Mayo Score.

[Meniscal repair in patients with chronic lesions].

Objective: To analyze the subjective and objective outcome of arthroscopic meniscal repair in patients with chronic meniscal lesions.

Methods: A group of patients that underwent arthroscopic meniscal repair of chronic tears with a minimum follow-up of six months was retrospectively evaluated. Physical examination oriented at finding persistent meniscal lesions was performed.

[Tendon sheath lipoma associated with quadriceps tendon rupture. Case report].

Background: Tendon sheath lipoma is an uncommon tumor characterized morphologically by mature fatty tissue lobes adherent to the tendon or intersecting its fibers. The association with quadriceps tendon rupture is unusual. Etiologic factors that may condition those ruptures have not yet been fully described.