Influence of the substitution position on spin communication in photoexcited perylene-nitroxide dyads.

By virtue of the modularity of their structures, their tunable optical and magnetic properties, and versatile applications, photogenerated triplet-radical systems provide an ideal platform for the study of the factors controlling spin communication in molecular frameworks. Typically, these compounds consist of an organic chromophore covalently attached to a stable radical. After formation of the chromophore triplet state by photoexcitation, two spin centres are present in the molecule that will interact.

References for Small Fluorescence Quantum Yields.

Three compounds with fluorescence quantum yields in the range of 10 to 10 and emission spectra covering the UV/Vis spectral range are suggested as new references for the determination of small fluorescence quantum yields. The compounds are thymidine (dT) in water, dibenzoylmethane (DBM) in ethanol, and malachite green chloride (MG) in water, representing the blue, green, and red regions of the spectrum, respectively. All compounds are easily handled, photostable, and commercially available.

The Combined Auricular Graft: A New Technique for Mestizo Nasal Tip Surgery.

Background: Current literature lacks a single cartilage graft to address problems in projection, rotation, and/or definition in mestizo patients that considers the alar cartilage structure, length, and shape characteristics of this population.

Objectives: The authors sought to describe a novel technique and evaluate the aesthetic outcomes of the combined auricular graft in mestizo patients undergoing primary rhinoplasty.

Methods: A retrospective cohort study of consecutive patients who underwent primary rhinoplasty using the combined auricular graft between January 2015 and June 2017 was performed.

The new LassoLoop360° technique for biomechanically superior tissue grip.

Purpose: Suprapectoral tenodesis is a frequently used technique for treating pathologies of the long head of the biceps brachii (LHBB) tendon. However, so far, no Gold Standard treatment exist. Hence, the arthroscopic LassoLoop360 (LL360) technique is introduced aiming to provide secure fixation and improved biomechanical properties.

Ultrasound melted polymer sleeve for improved primary pedicle screw anchorage: A novel augmentation technique.

Background: Cement augmentation of pedicle screws to prevent screw loosening is associated with significant complications, such as cement leakage or bone necrosis. Therefore, an alternative strategy to improve pedicle screw anchorage has been recently developed: Polymer reinforcement of pedicle screws uses an in situ melted polymer sleeve in order to enhance screw anchorage. This biomechanical study evaluated the effect of polymer-reinforcement by comparing polymer-reinforced pedicle screws to non-augmented as well as cement-augmented screws under cyclic loading.

Long-Term Outcomes in Breast Augmentation in Trans-Women: A 20-Year Experience.

Background: Breast augmentation in trans-women requires special consideration and thorough preoperative planning.

Objectives: This study aimed to present our long-term outcome and experience gained over the past 21 years.

Methods: Trans-women who have undergone breast augmentation since 1995 were reviewed for primary surgery, type of incision, implant site, implant size and shape, and revisions.

Outcome of Stromal Vascular Fraction-Enriched Fat Grafting Compared to Intramuscular Transposition in Painful End-Neuromas of Superficial Radial Nerve: Preliminary Results.

Introduction: The management of painful end-neuromas of the superficial branch of the radial nerve (SBRN) remains challenging due to high levels of pain relapse. The novel technique of stromal vascular fraction (SVF)-enriched fat grafting showed continuous pain relief, although failed to prove statistically significant. Besides acting as a mechanical barrier, SVF-enriched fat grafting might also affect the cellular level.

Stromal Vascular Fraction-enriched Fat Grafting for the Treatment of Symptomatic End-neuromata.

The purpose of this study was to methodically illustrate and highlight the crucial steps of stromal vascular fraction (SVF)-enriched fat grafting as a novel treatment of symptomatic end-neuromata of peripheral sensory nerves, and in this study, specifically of the superficial branch of the radial nerve (SBRN). Despite a multitude of existing treatments, persistent postoperative pain and common pain relapse are still very common, independent of the procedure assessed. The neuroma is microsurgically excised accordingly to standardized protocol.

Reconstruction of Penile Shaft Defects Following Silicone Injection by Bipedicled Anterior Scrotal Flap.

Purpose: Numerous causalities, including attempts at penile augmentation with silicone or paraffin, can lead to extensive circular penile shaft defects. Reconstruction is challenging and skin grafting is a suboptimal option despite its widespread use. We present a surgical technique for penile shaft reconstruction with a bipedicled anterior scrotal flap.

The novel treatment of SVF-enriched fat grafting for painful end-neuromas of superficial radial nerve.

Introduction: None of the existing treatments in the management of painful end-neuromas of the superficial branch of the radial nerve (SBRN) has been proven superior due to high levels of pain relapse. Fat grafts enriched with the stromal vascular fraction (SVF) could act as a mechanic barrier with biological effects decreasing the resorption rate and boosting the graft's regenerative potential. This study describes the novel surgical treatment technique of SVF-enriched fat grafting.

All-inside meniscal repair devices compared with their matched inside-out vertical mattress suture repair: introducing 10,000 and 100,000 loading cycles.

Background: All-inside arthroscopic meniscal repairs are favored by most clinicians because of their lower complication rate and decreased morbidity compared with inside-out techniques. Until now, only 1000 cycles have been used for biomechanical testing.

Hypothesis: All-inside meniscal repairs will show inferior biomechanical response to cyclic loading (up to 100,000 cycles) and load-to-failure testing compared with inside-out suture controls.