To compare the biomechanical properties of single-row repair with triple-loaded (TL) anchor repair versus a knotless rip stop (KRS) repair in a rotator cuff repair model.
Title: Validy of Indirect Ultrasound Findings in Acute Anterior Cruciate Ligament Ruptures
Ken Mautner, MD, Walter I. Sussman, DO, Katie Nanos, MD, Joseph Blazuk, MD, Carmen Brigham, ATC, Emily Sarros, ATC
Objectives: Ultrasound (US) is increasingly being used as an extension of the physical examination on the sidelines, in training rooms, and in clinics. Anterior cruciate ligament (ACL) injury in sport is common, but the literature on US findings after acute ACL rupture is limited. Three indirect US findings of ACL rupture have been described, and this study assessed the validity of these indirect signs.
American Institute of Ultrasound in Medicine / J Ultrasound Med 2018; 9999:1-8 / 0278-4297
Title: Triple-Loaded Suture Anchors Versus a Knotless Rip Stop Construct in a Single-Row Rotator Cuff Repair Model
Matthew Noyes, MD, Christopher Adams MD, Evan S. Lederman MD, Patrick Denard MD
Full article link below.
The Journal of Arthroscopy and Related Research: 2018 Feb 15. pii: S0749-8063(18)30029-X. doi: 10.1016/j.arthro.2017.12.024. [Epub ahead of print]
Title: Stress shielding of the humerus in press-fit anatomic shoulder arthroplasty: review and recommendations for evaluation
Patrick Denard MD, Patric Raiss MD, Reuben Gobezie MD, T. Bradley Edwards MD, Evan S. Lederman MD
Uncemented press-fit humeral stems were developed with the goal of decreasing operative time, preserving bone stock, and easing revision. In recent years, short stems and stemless humeral implants have also become available. These press-fit humeral implants have varying designs that can lead to changes in stress distribution in the proximal humerus. Such stress shielding manifests as bony adaptations and may affect long-term functional outcome and the ability to perform revision. However, current studies of humeral fixation during total shoulder arthroplasty are complicated because a variety of classification systems have been used to report findings.
Full article link below.
Journal of Shoulder and Elbow Surgery E-pub February 6, 2018
Title: Healing and functional outcome of a subscapularis peel repair with a stem-based repair after total shoulder arthroplasty
Reuben Gobezie MD, Patrick Denard MD, Yousef Shishani MD, Anthony Romeo MD, Evan S. Lederman MD
The purpose of this study was to evaluate functional outcome and healing of a subscapularis peel with a stem-based repair after total shoulder arthroplasty (TSA). The hypothesis was that the repair would lead to subscapularis healing in the majority of cases.
Full article: https://doi.org/10.1016/j.jse.2017.02.013
Title: Preventing infection in shoulder arthroplasty: Navigating the minefields
Periprosthetic infection after shoulder arthroplasty represents a devastating complication that often requires extensive revision surgery with substantial economic and patient burden, and ultimately leads to reduced patient function.
*This is based on a lecture by Dr Lederman at the 2017 Current Concepts in Shoulder Arthroplasty conference in Las Vegas, NV.
Title: The Glenoid Labral Articular Teardrop Lesion: A Chondrolabral Injury With Distinct Magnetic Resonance Imaging Findings
Evan S. Lederman MD, Stephen Flores MD, Christopher Stevens MD, Damien Richardson MD, Pamela Lund MD
*Identification of this lesion of MRI can help in diagnosis and treatment of labral tears.
Patients were prospectively identified at the time of MRI by a characteristic teardrop appearance of a pedicled displaced chondrolabral flap in the axillary recess on coronal imaging and retrospectively reviewed.
Full article: https://doi.org/10.1016/j.arthro.2017.08.236
Title: Short-term clinical outcome of an anatomic short-stem humeral component in total shoulder arthroplasty
Anthony A. Romeo MD, Robert J Thorness MD, Shelby A Sumner MPH, Reuben Gobezie MD, Evan S Lederman MD, Patrick J Denard MD
Short-stem press-fit humeral components have recently been developed in an effort to preserve bone in total shoulder arthroplasty (TSA), but few studies have reported outcomes of these devices. The purpose of this study was to evaluate the short-term clinical outcomes of an anatomic short-stem humeral component in TSA. We hypothesized that the implant would lead to significant functional improvement with low rates of radiographic loosening.
Full Article: https://doi.org/10.1016/j.jse.2017.05.026
The Journal of Shoulder and Elbow Surgery
Volume 27, Issue 1, January 2018, Pages 70-74
Title: Glenohumeral osteoarthritis in young patients: Stemless total shoulder arthroplasty trumps resurfacing arthroplasty—Opposes
Samuel Harmsen MD and Evan S Lederman MD
When considering shoulder arthroplasty in a younger patient the surgeon can choose between stemmed, stemless or resurfacing implants for humeral reconstruction. Resurfacing arthroplasty can reproduce humeral anatomy independent of the humeral shaft, minimize bone resection and offer potential easier revision surgery. The resurfacing implant has been in use for over 30 years and has favorable long-term outcome.
Title: Humeral cemented revision: Techniques for safe extraction
Samuel Harmsen MD, Evan S. Lederman MD
Removing a well-fixed humeral component in revision shoulder arthroplasty can present a difficult challenge. Intraoperative complications including iatrogenic fracture, humeral perforation, segmental bone loss, nerve and soft tissue injury can occur. These complications can occur with both cemented and press-fitted stems and can lead to increased morbidity and decreased functional outcomes. Complete removal of the cement mantle and cement restrictor, when necessary, can present even further challenges. Several extraction techniques have been described that can help minimize complications and enable safe, complete component extraction.