Two-year follow-up of the SMR stemless platform shoulder system: a multicenter, prospective clinical study.

Background: The use of stemless shoulder arthroplasty for osteoarthritis has grown substantially over the past decades. The goal of this study is to evaluate the clinical and radiological outcomes of the Lima SMR stemless anatomic and reverse total shoulder arthroplasty.

Methods: Seventy-three implants in 73 patients (61 anatomic total shoulder arthroplasties [aTSAs] and 12 reverse shoulder arthroplasties [RSAs]) were analyzed with a minimum follow-up of 2 years.

Satisfactory Short-Term Outcomes of Reverse Shoulder Arthroplasty for Complex Three- and Four-Part Fractures of the Humeral Head in Octogenarians.

Background: Proximal humeral fractures with severe comminution and poor bone quality are among the most common injuries in the elderly population. Reverse shoulder arthroplasty (RSA) has been widely used to manage complex three- and four-part humeral head fractures. The purpose of the present study was to report the result of this technique in the demanding population of octogenarians.

Reverse Shoulder Arthroplasty for the Treatment of 3 and 4- Part Fractures of the Humeral Head in the Elderly.

Background: Proximal humeral fractures in elderly patients present with severe comminution and osteoporotic bone quality. Reverse shoulder arthroplasty has lately been proven beneficial in treating patients with complex proximal humeral fractures. The above technique is recommended and has better results in elderly than in younger individuals.

A New Electromagnetic Navigation System for Pedicle Screws Placement: A Human Cadaver Study at the Lumbar Spine.

Introduction: Technical developments for improving the safety and accuracy of pedicle screw placement play an increasingly important role in spine surgery. In addition to the standard techniques of free-hand placement and fluoroscopic navigation, the rate of complications is reduced by 3D fluoroscopy, cone-beam CT, intraoperative CT/MRI, and various other navigation techniques. Another important aspect that should be emphasized is the reduction of intraoperative radiation exposure for personnel and patient.

Bilateral spinal decompression of lumbar central stenosis with the full-endoscopic interlaminar versus microsurgical laminotomy technique: a prospective, randomized, controlled study.

Background: Extensive decompression with laminectomy, where appropriate, is often still described as the method of choice when operating on degenerative lumbar spinal stenosis. Nonetheless, tissue-sparing procedures are becoming more common. Endoscopic techniques have become the standard in many areas because of the surgical advantages they offer and the benefits for rehabilitation.

Endoscopic repair of tears of the superficial layer of the distal triceps tendon.

Purpose: The purpose of this study was to evaluate the results after endoscopic repair of partial superficial layer triceps tendon tears.

Methods: Fourteen patients treated surgically between July 2005 and December 2012 were studied prospectively for 12 months. Indication for surgery was a partial detachment of the triceps tendon from the olecranon that was proved by magnetic resonance imaging (MRI) in all cases.

Arthroscopic versus conservative treatment of first anterior dislocation of the shoulder in adolescents.

Background: Conservative treatment of posttraumatic antero-inferior shoulder instability leads to a high failure rate in a young and active population. However, treatment in an adolescent age group is not well documented.

Methods: We conducted a prospective study with adolescent patients (age 15 to 18 y) who suffered a first traumatic anterior dislocation of the shoulder.

Arthroscopic reconstruction of isolated subscapularis tears: clinical results and structural integrity after 24 months.

Purpose: The purpose of this study was to evaluate the magnetic resonance imaging (MRI) and clinical results of arthroscopic repair of isolated subscapularis tears at 24 months' follow-up.

Methods: We prospectively followed up 20 patients with isolated subscapularis tears treated with arthroscopic repair with suture anchors in a 3-year period (January 2006 to December 2008) at our institution. Clinical examination of the patients and functional scores (Constant and University of California, Los Angeles [UCLA] scores) were obtained preoperatively and at 6 months, 12 months, and 24 months postoperatively.