Arthroscopic Partial Meniscectomy Using a Needle Arthroscope for Visualization Resulted in Greater Retention of Postoperative Quadriceps Muscle Strength Compared to Traditional Arthroscope.

Introduction: The purpose of this study is to prospectively evaluate differences in post-arthroscopic partial meniscectomy patients based upon the use of a small-bore needle arthroscope or traditional arthroscope for intraoperative visualization.

Materials And Methods: Sixty-eight patients were randomized in a 1:1 fashion to have the visualization for arthroscopic partial meniscectomy performed with either a needle arthroscope or traditional arthroscope. Prior to surgery and one-week post procedure, patients underwent peak torque isometric knee extension testing using a handheld dynamometer and Visual Analog Scale (VAS) score collection.

Improved Network Integrity and Patient Follow-up After In-Office Needle Arthroscopy Compared to Outpatient Advanced Diagnostic Imaging for Intra-articular Pathology.

Purpose: To evaluate network integrity for diagnostic testing and patient follow-up comparing in-office needle arthroscopy and outpatient advanced diagnostic imaging for intra-articular pathology.

Methods: A retrospective chart review was performed to identify patients who were indicated for either in-office needle arthroscopy (IONA) or outpatient advanced diagnostic imaging (OADI). () codes 29870 and 29805 with place of service modifier 11 were used to identify patients who underwent IONA of the knee and shoulder, respectively, between January 2020 and March 2023.

No Difference in Pullout Strength Between a Bio-inductive Implant and a Semitendinosus Tendon Graft in a Biomechanical Study of Medial Patellofemoral Ligament Repair Augmentation.

Purpose: To compare the pullout strength of a bio-inductive implant (BI) used to augment a medial patellofemoral ligament (MPFL) repair with the pullout strength of semitendinosus graft in a biomechanical cadaveric model.

Methods: Six matched pairs of cadavers (12 knees) were used in the biomechanical testing comparing semitendinosus tendon (Semi-T) versus a BI. The Semi-T was harvested from 1 of the matched pairs.

Arthroscopic Hip Labral Repair Using Needle Arthroscopic Visualization.

Hip arthroscopy has become increasingly popular in recent years and continues to grow as techniques and understanding of hip arthroscopy evolve. Needle hip arthroscopy is emerging as a technique that can offer potential advantages compared with a traditional arthroscope. These benefits include a higher degree field of view, lower profile design for easier maneuverability, decreased arthroscopic fluid, and potentially decreased postoperative pain and swelling.

The Use of Plant-Based Polysaccharide (PSP) Agents May Improve Early Outcomes Following Total Knee Arthroplasty-A Proof-of-Concept Study.

Our study sought to investigate the effects of a topical plant-based polysaccharide (PSP) as an adjunctive hemostat to minimize blood loss and improve early clinical outcomes in patients undergoing primary TKA. In this multi-center and randomized proof-of-concept study, 61 patients undergoing TKA were randomly assigned to one of two groups: A) intraoperative utilization of PSP (n=31) or B) no intervention (n=30). The primary outcomes were blood loss and change in hemoglobin, measured preoperatively and 24 hours postoperatively.

A Novel Achilles Tendon Repair Technique Utilizing a Bio-Composite Scaffold for a Sub-Acute Tear.

Achilles tendon ruptures are prevalent musculoskeletal injuries accounting for 20% of all large tendon ruptures with a re-rupture rate of 2.1-8.8%.

Biologic graft augmentation for glenoid bone loss in conversion of failed anatomic to reverse shoulder arthroplasty: a systematic review.

Glenoid bone loss presents a challenging dilemma, particularly in the setting of failed arthroplasty requiring conversion to a reverse total shoulder arthroplasty (rTSA). The aim of our systematic review was to examine the success and failure of biologic glenoid bone grafting to address vault deficiencies in the setting of shoulder arthroplasty conversion to rTSA. Twelve articles were included and a complete PUBMED search.

Patients With Low Resilience Scores Have Significantly Worse Postoperative Outcomes After Anterior Cruciate Ligament Reconstruction Than Patients With Normal or High Resilience Scores.

Purpose: To evaluate the relationship between patient resilience and patient-reported outcome measures (PROMS) after primary anterior cruciate ligament (ACL) reconstruction.

Methods: Patients who underwent an ACL reconstruction by a single surgeon between January 2012 and June 2020 were identified by an institutional query using Current Procedural Terminology codes. Patients were included if they (1) underwent a primary ACL reconstruction and (2) had a minimum of 2 years' follow-up.

A Novel Distal Biceps Rupture Repair Technique Utilizing a Biocomposite Scaffold.

Distal biceps tendon ruptures are uncommon injuries that have a re-rupture rate of 1.2% - 6%. In severe traumatic injuries or chronic injuries, a distal biceps tendon repair may require augmentation due to insufficient tissue quality.

Patient-Specific E-mailed Discharge Instructions Improve Patient Satisfaction and Patient Understanding After Surgical Arthroscopy.

Purpose: The purpose of this study is to determine whether patient-specific e-mails after surgical arthroscopy improve patient satisfaction and patient understanding of their procedure compared to traditional, preprinted discharge instructions.

Methods: Sixty patients who underwent surgical arthroscopy were prospectively, randomized into two separate groups. One cohort received a detailed e-mail of their procedure, discharge instructions, and labeled intraoperative arthroscopic images, while the second cohort received the standard preprinted instructions, while their arthroscopic images were discussed at the time of follow-up.

Cryo-electron microscopy analysis of myosin at work and at rest.

Myosins are a superfamily of ATP-driven actin-dependent molecular motors that are responsible for diverse functions from muscle contraction to cell division. The resolution revolution in cryo-EM has enabled characterisation of the interaction of myosin with its actin track in several states of the myosin motor cycle, for multiple myosin classes, allowing increased insight into the force generation mechanism. A major advancement in our understanding of myosin-2 regulation has come through solving structures of its shutdown state, dysregulation of which is implicated in multiple diseases.

Knee Medial Collateral Ligament Augmentation With Bioinductive Scaffold: Surgical Technique and Indications.

The medial collateral ligament (MCL) is the most commonly injured ligament of the knee; however, only a minority of cases require surgical intervention. Classically, isolated grade I and II MCL injuries are treated nonoperatively whereas isolated grade III injuries may be treated with surgery. High-grade MCL injuries are frequently associated with concomitant knee ligamentous injuries, particularly the anterior cruciate ligament.

Arthroscopic Rotator Cuff Repair Technique Using a Bio-Composite Scaffold for Tissue Augmentation.

The use of biologics and rotator cuff augmentation have seen significant growth in interest to combat complications of rotator cuff retear after arthroscopic rotator cuff repair. Bio-inductive implants are used to induce new tissue formation; however, they lack structural strength at the time of implantation. Conversely, dermal allografts are used to provide structural strength at implantation, but they do not allow for sufficient tissue incorporation and carry inherent risks of allograft tissue.

Pulmonary Tumor Embolism and Pulmonary Tumor Thrombotic Microangiopathy Causing Rapidly Progressive Respiratory Failure: A Case Series.

Pulmonary tumor embolism (PTE) and pulmonary tumor thrombotic microangiopathy (PTTM) are rare etiologies for rapidly progressive dyspnea in the setting of undiagnosed metastatic cancer. They occur most frequently in association with adenocarcinomas, with PTE being most frequently associated with hepatocellular carcinoma and PTTM being most commonly reported with gastric adenocarcinoma. Pulmonary tumor embolism and PTTM appear to be a disease spectrum where PTTM represents an advanced form of PTE.

Spatial Detection of the Shafts of Fractured Femur for Image-Guided Robotic Surgery.

Femur fractures due to traumatic forces often require surgical intervention. Such surgeries require alignment of the femur in the presence of large muscular forces up to 500 N. Currently, orthopedic surgeons perform this alignment manually before fixation, leading to extra soft tissue damage and inaccurate alignment.

Full-Thickness Rotator Cuff Tears Can Be Safely Treated With a Resorbable Bioinductive Bovine Collagen Implant: One-Year Results of a Prospective, Multicenter Registry.

Purpose: The purpose of this study was to prospectively collect safety and efficacy data in a large group of patients undergoing arthroscopic repair of full-thickness rotator cuff tears augmented with a resorbable bioinductive bovine collagen implant designed to promote healing.

Methods: Seventeen centers across the United States enrolled patients in an institutional review board-approved registry to collect outcomes data on the implant. Patients undergoing surgical management of full-thickness rotator cuff tears augmented with the implant were enrolled.

Treatment of Partial-Thickness Rotator Cuff Tears With a Resorbable Bioinductive Bovine Collagen Implant: 1-Year Results From a Prospective Multicenter Registry.

Background: Surgical treatment of partial-thickness rotator cuff tears remains challenging and controversial, with several traditional options including debridement with acromioplasty, transtendon or in situ repair, and take-down and repair. A resorbable bioinductive bovine collagen implant has shown promise as an alternative treatment option for partial-thickness tears.

Purpose: Data from a registry were analyzed to further establish that the implant contributes to improved patient-reported outcome (PRO) scores across a large number of patients treated for partial-thickness rotator cuff tears.

Does sublingual microscopy correlate with nailfold videocapillaroscopy in systemic sclerosis?

In this study, we examine sublingual videomicroscopy and nailfold videocapillaroscopy (NVC) features in systemic sclerosis (SSc) patients presenting for routine care. Consented participants met classification criteria for SSc. Sublingual videomicroscopy testing was performed in each subject, followed by a NVC assessment.

Percutaneous Skeletal Fixation of Painful Subchondral Bone Marrow Edema Utilizing an Injectable, Synthetic, Biocompatible Hyaluronic Acid-Based Bone Graft Substitute.

Subchondral bone marrow edema (SBME) represents a pathologic alteration of subchondral bone. A strong correlation exists between its presence and the progression of osteoarthritis. Very few treatment options exist between the spectrum of conservative management and the definitive treatment of total knee arthroplasty (TKA).