The effects of poloxamer and sodium alginate mixture (Guardix-SG®) on range of motion after axillary lymph node dissection: A single-center, prospective, randomized, double-blind pilot study

An update on rehabilitative treatment of shoulder disease after breast cancer care

According to the latest statistics of the American Cancer Society 2022, breast cancer is a leading cause of morbidity and death among women worldwide. As a result of oncological procedures, breast cancer survivors often complain of pain and disability to the ipsilateral arm and shoulder. Objective: we aimed to analyze the latest literature regarding the efficacy of different rehabilitation treatments in patients affected by shoulder impairment secondary to breast cancer care. A comprehensive literature search was conducted on PubMed, PEDRO and Scopus databases. All English studies, published in the last decade up to March 2023, reporting shoulder problems in adult women treated for breast cancer with partial or total mastectomy ± breast reconstruction, lymphadenectomy, radio-, chemo-, hormonal or biologic therapy were assessed for eligibility. The methodological quality of the included trials was evaluated using the Cochrane bias tool. Of 159 articles identified, 26 were included in qualitative synthesis. Data from 1974 participants with a wide heterogeneity of breast cancer treatments were analyzed in this review. The methodological quality for most included studies was moderate. Several physiotherapy and interventional protocols showed some evidence of efficacy in shoulder range of motion (ROM), upper limb function, strength, pain and quality of life recovery after breast cancer treatment. Both physiotherapy alone or in combination with other techniques significantly improves shoulder disability, pain, and quality of life of patients undergoing breast cancer treatment regardless of their baseline characteristics or the time passed from surgery. The optimal treatment protocol and dosage remain unclear, and more homogeneous studies are needed in order to perform a meta-analysis of the literature.

Marine biomaterials in biomedical nano/micro-systems

Marine resources in unique marine environments provide abundant, cost-effective natural biomaterials with distinct structures, compositions, and biological activities compared to terrestrial species. These marine-derived raw materials, including polysaccharides, natural protein components, fatty acids, and marine minerals, etc., have shown great potential in preparing, stabilizing, or modifying multifunctional nano-/micro-systems and are widely applied in drug delivery, theragnostic, tissue engineering, etc. This review provides a comprehensive summary of the most current marine biomaterial-based nano-/micro-systems developed over the past three years, primarily focusing on therapeutic delivery studies and highlighting their potential to cure a variety of diseases. Specifically, we first provided a detailed introduction to the physicochemical characteristics and biological activities of natural marine biocomponents in their raw state. Furthermore, the assembly processes, potential functionalities of each building block, and a thorough evaluation of the pharmacokinetics and pharmacodynamics of advanced marine biomaterial-based systems and their effects on molecular pathophysiological processes were fully elucidated. Finally, a list of unresolved issues and pivotal challenges of marine-derived biomaterials applications, such as standardized distinction of raw materials, long-term biosafety in vivo, the feasibility of scale-up, etc., was presented. This review is expected to serve as a roadmap for fundamental research and facilitate the rational design of marine biomaterials for diverse emerging applications.

Types and doses of anti-adhesive agents injected into subacromial space do not have an effect on the clinical and anatomical outcomes after arthroscopic rotator cuff repair

PURPOSE

Joint stiffness after arthroscopic rotator cuff repair is a major concern for orthopaedic surgeons. Various antiadhesive agents are commonly administered after rotator cuff repair for its prevention. This study aimed to compare the outcomes among patients injected with different types and amounts of anti-adhesive agents after rotator cuff repair. It was hypothesized that the outcomes might differ depending on the use of the anti-adhesive agent and its type and dose.

METHODS

A total of 267 patients who underwent arthroscopic rotator cuff repair with or without subacromial injection of anti-adhesive agents were enrolled. The first group (group A; 51 patients) were injected with 3 mL of poloxamer/sodium alginate-based anti-adhesive agent. The second group (group B; 93 patients) were injected with 3 mL of sodium hyaluronate-based anti-adhesive agent. The third group (group C; 82 patients) were injected with 1.5 mL of sodium hyaluronate-based anti-adhesive agent. Finally, the last group (group D; 41 patients) who did not use anti-adhesive agents served as the control. The range of motion (ROM) and pain VAS scores were measured preoperatively and at 5 weeks, 3 months, 6 months, and 1 year postoperatively. Functional outcomes were evaluated using American Shoulder and Elbow Surgeons and Constant scores, whereas cuff integrity was assessed via MRI or ultrasonography at least 6 months postoperatively.

RESULTS

All ROM measurements, pain VAS scores, and functional scores were significantly improved regardless of the use, type, and dose of the anti-adhesive agents. In addition shoulder ROM and rotator cuff healing did not significantly differ among the groups (all n.s.).

CONCLUSIONS

No significant differences were found in the clinical and anatomical outcomes according to the type and dose of the anti-adhesive agents subacromially injected after rotator cuff repair.

LEVEL OF EVIDENCE

III.

Efficacy and safety of temperature-sensitive acellular dermal matrix in prevention of postoperative adhesion after thyroidectomy: A randomized, multicenter, double-blind, non-inferiority study

Introduction

MegaShield^® is a newly developed temperature-sensitive anti-adhesive containing micronized acellular dermal matrix. The aim of this study was to investigate the efficacy and safety of MegaShield^® compared with Guardix-SG^® in the prevention of adhesions in patients undergoing bilateral total thyroidectomy.

Method

We conducted a multicenter trial between October 2018 and March 2020 in patients undergoing total thyroidectomy. The patients were randomly assigned to either the MegaShield^® group or the Guardix-SG^® group. The primary outcome was the esophageal movement using marshmallow six weeks after the surgery and the secondary outcome was the assessed adhesion score. The safety assessment was also evaluated.

Results

The study included 70 patients each in the MegaShield^® and control (Guardix-SG^®) groups. Baseline clinical characteristics, the mean score of marshmallow esophagography, and the sum of adhesion scores were not statistically different between the two groups. Inferiority test demonstrated that the efficacy of MegaShield^® is not inferior to that of Guardix-SG®. There were no device-related complications in both groups.

Conclusion

The efficacy and safety of MegaShield^® were not inferior than those of Guardix-SG^®. MegaShield^® demonstrated the potential of ADM as a potential future anti-adhesive agent.

Trial registration

The name of trial registry CRIS (Clinical Research Information Service) https://cris.nih.go.kr/cris/index.jsp. (The full trial protocol can be accessed) Registration number: KCT0003204.

Effectiveness of an Adapted Physical Activity Protocol for Upper Extremity Recovery and Quality of Life Improvement in a Case of Seroma after Breast Cancer Treatment

Growing evidence indicates that physical activity (PA) interventions may reduce upper limb function-limiting side effects of treatments and improve quality of life (QoL) of breast cancer (BC) survivors. However, the possible effectiveness of PA in cases developing seroma after BC treatment has yet to be demonstrated. Here, we describe for the first time the impact of a structured PA pathway (i.e., two cycles of eight-week adapted PA followed by eight-week adapted fitness) on upper limb disability and QoL in a peculiar case of chronic seroma as complication of reconstructive plastic surgery after left breast mastectomy and lymphadenectomy. A 56-year-old female BC survivor underwent a functional test battery (i.e., shoulder–arm mobility, range of motion, back flexibility and indirect assessment of pectoralis minor muscle) at baseline, during and after ending the structured PA pathway. Upper limb and back pain intensity and QoL were evaluated by numerical rating scale and Short Form-12 questionnaire, respectively. A relevant seroma reduction, an improvement in upper limb mobility and pain perception, and an overall increase in QoL were achieved after the structured PA intervention. Our findings suggest that an adapted PA intervention may represent an effective strategy for seroma treatment in BC survivors.