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1.
Life (Basel) ; 14(3)2024 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-38541644

RESUMO

The vascularized fibula transfer is a well-established technique for extremity reconstruction, but operative planning and patient selection remains crucial. Although recently developed techniques for bone reconstruction, such as bone segment transfer, are becoming increasingly popular, bone defects may still require vascularized bone grafts under certain circumstances. In this study, 41 cases, 28 (68%) men and 13 (32%) women (median age: 40 years), were retrospectively analyzed. Therapy-specific data (flap vascularity [free vs. pedicled] size in cm and configuration [single- vs. double-barrel], mode of fixation [internal/external]) and potential risk factors were ascertained. Indications for reconstruction were osteomyelitis at host site (n = 23, 55%), pseudarthrosis (n = 8, 20%), congenital deformity (n = 6, 15%), traumatic defect, and giant cell tumor of the bone (n = 2, 5% each). Complete healing occurred in 34 (83%) patients after a median time of 6 months. Confounders for prolonged healing were female gender (p = 0.002), reconstruction in the lower limb (p = 0.011), smoking (p = 0.049), and the use of an external fixator (p = 0.009). Six (15%) patients required secondary limb amputation due to reconstruction failure, and one patient had persistent pseudarthrosis at last follow-up. The only risk factor for amputation assessed via logistic regression analysis was preexisting PAOD (peripheral artery occlusive disease; p = 0.008) The free fibula is a reliable tool for extremity reconstruction in various cases, but time to full osseous integration may exceed six months. Patients should be encouraged to cease smoking as it is a modifiable risk factor.

2.
J Invest Dermatol ; 2024 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-38483357

RESUMO

In an aging society with common lifestyle-associated health issues such as obesity and diabetes, chronic wounds pose a frequent challenge that physicians face in everyday clinical practice. Therefore, nonhealing wounds have attracted much scientific attention. Several in vitro and in vivo models have been introduced to deepen our understanding of chronic wound pathogenesis and amplify therapeutic strategies. Understanding how wounds become chronic will provide insights to reverse or avoid chronicity. Although choosing a suitable model is of utmost importance to receive valuable outcomes, an ideal in vivo model capturing the complexity of chronic wounds is still missing and remains a translational challenge. This review discusses the most relevant mammalian models for wound healing studies and provides guidance on how to implement the hallmarks of chronic wounds. It highlights the benefits and pitfalls of established models and maps out future avenues for research.

3.
Front Aging ; 5: 1339317, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38333665

RESUMO

Average life expectancy has been steadily increasing in developed countries worldwide. These demographic changes are associated with an ever-growing social and economic strain to healthcare systems as well as society. The aging process typically manifests as a decline in physiological and cognitive functions, accompanied by a rise in chronic diseases. Consequently, strategies that both mitigate age-related diseases and promote healthy aging are urgently needed. Telomere attrition, characterized by the shortening of telomeres with each cell division, paradoxically serves as both a protective mechanism and a contributor to tissue degeneration and age-related ailments. Based on the essential role of telomere biology in aging, research efforts aim to develop approaches designed to counteract telomere attrition, aiming to delay or reduce age-related diseases. In this review, telomere biology and its role in aging and age-related diseases is summarized along with recent approaches to interfere with telomere shortening aiming at well- and healthy-aging as well as longevity. As aging research enters a new era, this review emphasizes telomere-targeting therapeutics, including telomerase activators and tankyrase inhibitors, while also exploring the effects of antioxidative and anti-inflammatory agents, along with indirectly related approaches like statins.

4.
Dermatology ; 240(2): 304-311, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38402858

RESUMO

INTRODUCTION: Pigments of tattoo inks may over time migrate to other parts of the body. Inks kinetics are still poorly understood and little studied. The aim of this first study was to investigate the kinetics of tattoo inks pigment in tattooed porcine skin, which is closer to human skin than mouse skin studied in the past. METHODS: Three animals were tattooed on the inner thigh and one animal served as untreated control. Skin biopsies were taken on days 7, 14, and 28 after tattooing. Animals were sacrificed on day 28 and homogenate samples of the liver, spleen, kidney, and brain, as well the local lymph nodes were prepared. All samples were analyzed for ink components using inductively coupled plasma-mass spectrometry. The ink itself was characterized by dynamic light scattering and matrix-assisted laser desorption-ionization mass analysis. RESULTS: Titanium (212 g/kg), copper (6 mg/kg), aluminum (1 mg/kg), zirconium (1 mg/kg), and chromium (3 mg/kg) were found in the ink. Significant deposits of ink elements were detected in the tattooed skin when compared to non-tattooed skin from the same animal (mean ± standard deviation: titanium 240 ± 81 mg/kg, copper 95 ± 39 mg/kg, aluminum 115 ± 63 mg/kg, zirconium 23 ± 12 mg/kg, and chromium 1.0 ± 0.2 mg/kg; p < 0.05). Lymph node concentrations of titanium, copper, aluminum, zirconium, and chromium were 42 ± 2 mg/kg, 69 ± 25 mg/kg, 49 ± 18 mg/kg, 0.3 ± 0.2 mg/kg, 0.5 ± 0.2 mg/kg, respectively. CONCLUSION: Deposits in skin were unchanged from days 7-28 indicating no redistribution or elimination. No significant deposits of ink elements were found in the liver, spleen, kidney, and brain. In conclusion, our findings confirmed distribution of elements from tattoos to regional lymph nodes, but neither to excretory organs, e.g., liver and kidney, nor to spleen and brain. Thus systemic internal organ exposure was not found.


Assuntos
Tatuagem , Animais , Camundongos , Alumínio , Cromo , Cobre , Tinta , Linfonodos , Suínos , Titânio , Zircônio
5.
PLoS One ; 19(2): e0297491, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38412194

RESUMO

BACKGROUND: In hospital medication errors are common. Our aim was to investigate risks of the analogue and digitally-supported medication process and any potential solutions. METHODS: A mixed methods study including a structured literature search and online questionnaires based on the Delphi method was conducted. First, all risks were structured into main and sub-risks and second, risks were grouped into risk clusters. Third, healthcare experts assessed risk clusters regarding their likelihood of occurrence their possible impact on patient safety. Experts were also asked to estimate the potential for digital solutions and solutions that strengthen the competence of healthcare professionals. RESULTS: Overall, 160 main risks and 542 sub-risks were identified. Main risks were grouped into 43 risk clusters. 33 healthcare experts (56% female, 50% with >20 years professional-experience) ranked the likelihood of occurrence and the impact on patient safety in the top 15 risk clusters regarding the process steps: admission (n = 4), prescribing (n = 3), verifying (n = 1), preparing/dispensing (n = 3), administering (n = 1), discharge (n = 1), healthcare professional competence (n = 1), and patient adherence (n = 1). 28 healthcare experts (64% female, 43% with >20 years professional-experience) mostly suggested awareness building and training, strengthened networking, and involvement of pharmacists at point-of-care as likely solutions to strengthen healthcare professional competence. For digital solutions they primarily suggested a digital medication list, digital warning systems, barcode-technology, and digital support in integrated care. CONCLUSIONS: The medication process holds a multitude of potential risks, in both the analogue and the digital medication process. Different solutions to strengthen healthcare professional competence and in the area of digitalization were identified that could help increase patient safety and minimize possible errors.


Assuntos
Erros de Medicação , Segurança do Paciente , Humanos , Feminino , Masculino , Erros de Medicação/prevenção & controle , Hospitais , Pessoal de Saúde , Farmacêuticos
6.
Cell Mol Biol Lett ; 29(1): 10, 2024 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-38182971

RESUMO

BACKGROUND: Burn injuries can be associated with prolonged healing, infection, a substantial inflammatory response, extensive scarring, and eventually death. In recent decades, both the mortality rates and long-term survival of severe burn victims have improved significantly, and burn care research has increasingly focused on a better quality of life post-trauma. However, delayed healing, infection, pain and extensive scar formation remain a major challenge in the treatment of burns. ADSCs, a distinct type of mesenchymal stem cells, have been shown to improve the healing process. The aim of this review is to evaluate the efficacy of ADSCs in the treatment of burn injuries. METHODS: A systematic review of the literature was conducted using the electronic databases PubMed, Web of Science and Embase. The basic research question was formulated with the PICO framework, whereby the usage of ADSCs in the treatment of burns in vivo was determined as the fundamental inclusion criterion. Additionally, pertinent journals focusing on burns and their treatment were screened manually for eligible studies. The review was registered in PROSPERO and reported according to the PRISMA statement. RESULTS: Of the 599 publications screened, 21 were considered relevant to the key question and were included in the present review. The included studies were almost all conducted on rodents, with one exception, where pigs were investigated. 13 of the studies examined the treatment of full-thickness and eight of deep partial-thickness burn injuries. 57,1 percent of the relevant studies have demonstrated that ADSCs exhibit immunomodulatory effects during the inflammatory response. 16 studies have shown improved neovascularisation with the use of ADSCs. 14 studies report positive influences of ADSCs on granulation tissue formation, while 11 studies highlight their efficacy in promoting re-epithelialisation. 11 trials demonstrated an improvement in outcomes during the remodelling phase. CONCLUSION: In conclusion, it appears that adipose-derived stem cells demonstrate remarkable efficacy in the field of regenerative medicine. However, the usage of ADSCs in the treatment of burns is still at an early experimental stage, and further investigations are required in order to examine the potential usage of ADSCs in future clinical burn care.


Assuntos
Queimaduras , Células-Tronco Mesenquimais , Animais , Adipócitos , Queimaduras/terapia , Qualidade de Vida , Suínos , Cicatrização
7.
Mil Med ; 189(1-2): e424-e428, 2024 Jan 23.
Artigo em Inglês | MEDLINE | ID: mdl-37668495

RESUMO

War-related burns are common injuries, also among the civilian population. Additional trauma such as fractures or shrapnel wounds may add significant morbidity. Burn injuries in war zones are furthermore frequently undertreated and hence prone to complications. We report a case of a young female victim of war, whose severely infected burn wounds could be successfully healed using a combination of targeted antimicrobial therapy, wound conditioning using decellularized fish skin, and subsequent skin grafting.


Assuntos
Anti-Infecciosos , Queimaduras , Fusarium , Infecções por Pseudomonas , Infecção dos Ferimentos , Feminino , Queimaduras/complicações , Queimaduras/terapia , Pseudomonas aeruginosa , Infecções por Pseudomonas/complicações , Infecções por Pseudomonas/tratamento farmacológico , Infecção dos Ferimentos/tratamento farmacológico , Humanos
8.
Sci Rep ; 13(1): 22985, 2023 12 27.
Artigo em Inglês | MEDLINE | ID: mdl-38151564

RESUMO

Burn wounds are a common challenge for medical professionals. Current burn wound models hold several limitations, including a lack of comparability due to the heterogeneity of wounds and differences in individual wound healing. Hence, there is a need for reproducible in vivo models. In this study, we established a new burn wound model using the chorioallantoic membrane assay (CAM) as a surrogate model for animal experiments. The new experimental setup was tested by investigating the effects of the auspicious biophysical therapy, photobiomodulation (PBM), on the wound healing of an induced CAM burn wound with a metal stamp. PBM has been shown to positively influence wound healing through vascular proliferative effects and the increased secretion of chemotactic substances. The easily accessible burn wounds can be treated with various therapies. The model enables the analysis of ingrowing blood vessels (angiogenesis) and diameter and area of the wounds. The established model was used to test the effects of PBM on burn wound healing. PBM promoted angiogenesis in burn wounds on day 4 (p = 0.005). Furthermore, there was a not significant trend toward a higher number of vessels for day 6 (p = 0.065) in the irradiated group. Changes in diameter (p = 0.129) and the burn area (p = 0.131) were not significant. Our results suggest that CAM can be a suitable model for studying burn wounds. The novel experimental design enables reproducible and comparable studies on burn wound treatment.


Assuntos
Queimaduras , Terapia com Luz de Baixa Intensidade , Animais , Membrana Corioalantoide , Angiogênese , Cicatrização , Queimaduras/radioterapia
9.
J Pers Med ; 13(11)2023 Nov 02.
Artigo em Inglês | MEDLINE | ID: mdl-38003885

RESUMO

This case report describes the surgical management of a patient with a complex hand trauma. This injury included tendon, vascular, and nerve injuries, a partial amputation of the index finger, fractures of the third proximal phalanx, and destruction of the metacarpophalangeal joint of the fifth finger. Firstly, the acute treatment of a complex hand injury is described. Secondly, the planning and execution of a joint reconstruction using a vascularized lateral femoral condylar flap, assisted by an individual 3D model, is illustrated. Precise reconstruction of the affected structures resulted in good revascularization as well as an anatomical bone consolidation. Intensive physical therapy, including autonomous proprioceptive range-of-motion exercises by the patient, resulted in significant functional improvement of the hand in daily life. Overall, we report on the successful reconstruction of a metacarpophalangeal joint by using a vascularized flap from the lateral femoral condyle. Furthermore, this case report highlights the efficacy of integrating individualized 3D printing technology to plan complex reconstructions, opening up promising opportunities for personalized and optimized interventions.

10.
Int J Mol Sci ; 24(19)2023 Oct 05.
Artigo em Inglês | MEDLINE | ID: mdl-37834357

RESUMO

Basal thumb arthritis is a painful and debilitating pathology that can severely reduce a patients' quality of life. Common therapies include oral pain control, local steroid injections and/or surgery. Yet, therapeutic data on long-term improvement and even cartilage repair are scarce. This review aims to present the currently available literature on novel therapies for basal thumb arthritis, including platelet-rich plasma (PRP), fat grafting and phototherapy, and investigate their potential efficacy. The entire OVID database and PubMed were searched for studies containing the topics PRP injection, lipofilling, laser treatment and regenerative treatment for carpometacarpal arthritis. Seven studies on the effect of fat tissue on basal thumb arthritis were found. Four authors reported on PRP injections, one RCT examined a combinational treatment of PRP and fat grafting, another phototherapy for the thumb joint and one prospective trial on chondrocyte transplantation was found. Pain improvement and decreased impairment were reported in the majority of PRP and/or fat grafting studies as well as after chondrocyte implantation. Phototherapy did not significantly improve the condition. This review revealed that only limited data on regenerative therapies for carpometacarpal arthritis are currently available, yet PRP and lipofilling show promising results and merit further investigation.


Assuntos
Artrite , Plasma Rico em Plaquetas , Humanos , Polegar/cirurgia , Estudos Prospectivos , Qualidade de Vida , Artrite/terapia , Dor
11.
J Pers Med ; 13(8)2023 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-37623444

RESUMO

Facial skin cancer (FSC) is prone to incomplete excision due to the sophisticated anatomy and the aesthetic importance of the face. In this study, we sought to investigate to what extent sex-specific differences and other operation-, patient-, and cancer-specific factors influence the re-resection rate in FSC surgery, in order to provide personalized treatment strategies to patients. In this retrospective study, patients (>18 years) undergoing surgical excision of an FSC were enrolled. Each patient's demographic data, cancer location, the surgical team, primary and secondary surgeries were analyzed. Overall, 469 patients (819 surgeries) were included. The mean age was 69 ± 15 years. No significant association between sex-specific factors (surgeon's sex (OR: 1.09, 95% CI: 0.76-1.56) or patient's sex (OR: 0.85, 95% CI: 0.62-1.17), surgeon-patient sex concordance and discordance) and the likelihood of secondary surgery were found. However, healing by secondary intention (OR: 4.28; 95% CI: 1.94-9.45) and cancer location showed an increased re-resection rate. In conclusion, FSC surgery is a safe method unaffected by sex-specific factors, which had no impact on the re-resection rate. However, in further analysis, the likelihood of a re-resection was influenced by other factors such as healing by secondary intention and cancer location. This knowledge might be useful to provide an algorithm for personalized treatment strategies in the future.

12.
Medicina (Kaunas) ; 59(7)2023 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-37512018

RESUMO

This case report focuses on a 17-year-old polytrauma patient who suffered a septic wound infection after an open reduction and internal fixation (ORIF) and soft tissue reconstruction with a pedicled flap, which led to a substantial bone and soft tissue defect of the lower leg. After thorough antibiotic treatment and after ensuring a non-septic wound, the defect was reconstructed using a contralateral free fibula flap designed as a flow through flap in a double loop manner to accommodate two fibular fragments and an ipsilateral ALT flap. Early weight bearing was initiated 11 days after the free flap transfer under external fixation, with full weight bearing achieved in 36 days with external fixation. After the removal of external fixation, full weight bearing was able to be reinitiated after 13 days, leading to the patient's return to normal activity 6 months after the bony reconstruction. This case presents an innovative approach to treating a complex defect, with the final decision on using two separate free flaps instead of a single osteofasciocutaneous free flap resulting in a good bony reconstruction and soft tissue coverage, and with the use of external fixation enabling early rehabilitation.


Assuntos
Retalhos de Tecido Biológico , Osteomielite , Procedimentos de Cirurgia Plástica , Humanos , Adolescente , Fíbula/lesões , Coxa da Perna , Retalhos de Tecido Biológico/cirurgia , Osteomielite/etiologia , Osteomielite/cirurgia , Resultado do Tratamento , Extremidade Inferior
13.
Healthcare (Basel) ; 11(14)2023 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-37510541

RESUMO

BACKGROUND: Prolonged symptoms of carpal tunnel syndrome (CTS) after primary carpal tunnel release (CTR) can reduce the quality of life and lead to multiple referrals across specialties. The following study aimed to identify differences in symptoms, signs, and intraoperative findings between recurrent and persistent CTS cases to avoid undesired outcomes after primary CTR. METHODS: A retrospective analysis was conducted on revision CTRs performed between 2005 and 2015 using literature-based definitions for recurrent (a relapse of symptoms occurs following a symptom-free period of ≥3 months) and persistent (symptoms persisting longer than three months after surgical release) CTS. The parameters assessed were symptoms, clinical signs, and intraoperative findings. RESULTS: Out of 53 cases, 85% (n = 45) were external referrals, whereby our own revision rate was 0.67% (n = 8/1199). Paresthesia and numbness were frequent in both groups; however, abnormal postoperative pain was reported more often in persistent cases (86%; n = 30/35) in comparison to recurrent cases (50%; n = 9/18; p = 0.009). Scarring around the median nerve was observed in almost all recurrent cases (94%; n = 17/18) and in 40% (n = 14/35) of persistent cases (p < 0.001). Incomplete division of the palmar ligament was the primary cause for revision in the persistent cohort (49%; n = 17/35). CONCLUSIONS: For patients experiencing symptoms for more than three months after CTR, primarily presenting as pain, it is advisable to consider referring the patient to a certified hand clinic for additional evaluation.

14.
Clin Pract ; 13(3): 648-655, 2023 May 25.
Artigo em Inglês | MEDLINE | ID: mdl-37366928

RESUMO

BACKGROUND AND OBJECTIVES: Essential oils are a complementary treatment and can play an important role in scar care. The aim of this study was to evaluate and compare the efficacy of a new essential oil (regeneration oil) with a control group on scar quality in healed split-thickness skin graft donor sites. MATERIALS AND METHODS: A single-center blinded randomized controlled study was performed on 30 patients with healed split-thickness skin graft donor site. The patients were randomly allocated into blended regeneration oil (n = 14) and pure almond oil (n = 16) groups. Application of the assigned oil occurred twice a day for 6 months. Scarring (Patient and Observer Scar Assessment Scale), itching (ITCH Assessment Scale) and scar discoloration (colorimetry) of the donor sites were assessed after 1, 3 and 6 months. RESULTS: We found no statistically significant differences between the groups in any applied parameter. We observed comparable outcomes (scar quality, itchiness, colorit) in healed split-thickness skin graft donor sites for both oils. CONCLUSIONS: Regeneration oil and control oil presented comparable results regarding scar quality, itchiness and colorit in healed split-thickness skin graft donor sites after 6 months of application. Both oils are suitable for skin/scar care in split-thickness skin graft donor sites.

15.
Biomedicines ; 11(4)2023 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-37189674

RESUMO

Skin wound healing is essential to health and survival. Consequently, high amounts of research effort have been put into investigating the cellular and molecular components involved in the wound healing process. The use of animal experiments has contributed greatly to the knowledge of wound healing, skin diseases, and the exploration of treatment options. However, in addition to ethical concerns, anatomical and physiological inter-species differences often influence the translatability of animal-based studies. Human in vitro skin models, which include essential cellular and structural components for wound healing analyses, would improve the translatability of results and reduce animal experiments during the preclinical evaluation of novel therapy approaches. In this review, we summarize in vitro approaches, which are used to study wound healing as well as wound healing-pathologies such as chronic wounds, keloids, and hypertrophic scars in a human setting.

16.
Int J Mol Sci ; 24(10)2023 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-37240126

RESUMO

The process of burn injury is multifaceted and involves a whole spectrum of inflammatory responses that can have significant implications for burn patients, including local, regional, and systemic effects [...].


Assuntos
Queimaduras , Cicatriz , Humanos , Cicatriz/patologia , Cicatrização/fisiologia , Queimaduras/complicações
17.
J Pers Med ; 13(5)2023 Apr 22.
Artigo em Inglês | MEDLINE | ID: mdl-37240874

RESUMO

BACKGROUND: Painful habitual instability of the thumb basal joint (PHIT) is a rarely diagnosed condition that can severely impair hand function. Furthermore, it can increase the risk of developing carpometacarpal arthritis of the thumb (CMAOT). Clinical examination and radiographic imaging provide the foundation for a correct diagnosis, but early detection is still challenging. We investigated two objective, radiographically obtainable parameters as potential risk factors for PHIT. METHODS: Clinical data and radiographic images of 33 patients suffering from PHIT were collected and compared to those of 35 people serving as the control group. The two main objectives, the slope angle and the bony offset of the thumb joint, were gathered from the X-rays and statistically analyzed. RESULTS: The analysis showed no differences between the study and the control group concerning the slope angle. Gender and the bony offset, on the other hand, had a significant influence. Female sex and higher offset values were associated with an increased risk of PHIT. CONCLUSIONS: The results of this study prove a connection between a high bony offset and PHIT. We believe this information can be valuable in early detection and will allow more efficient treatment of this condition in the future.

18.
J Pers Med ; 13(5)2023 May 11.
Artigo em Inglês | MEDLINE | ID: mdl-37240986

RESUMO

Breast-Implant-Associated Anaplastic Large-Cell Lymphoma (BIA-ALCL) is a rare low-incidence type of T-cell non-Hodgkin lymphoma, arising in the capsule around breast implants, and predominantly associated with the use of macro-textured breast implants. The purpose of this study was to use an evidence-based approach to systematically identify clinical studies comparing smooth and textured breast implants in women with regard to the risk of developing BIA-ALCL. METHODS: A literature search in PubMed in April 2023 and the article reference list of the French National Agency of Medicine and Health Products decision from 2019 were screened for applicable studies. Only clinical studies where the Jones surface classification could be applied (required information: breast implant manufacturer) for comparison of smooth and textured breast implants were considered. RESULTS: From a total of 224 studies, no articles were included due to the lack of fit to the strict inclusion criteria. CONCLUSIONS: Based on the scanned and included literature, implant surface types in relation to the incidence of BIA-ALCL were not evaluated in clinical studies and data from evidence-based clinical sources plays a minor to no role in this context. An international database that combines breast implant-related data from (national, opt-out) medical device registries is, therefore, the best available option to obtain relevant long-term breast implant surveillance data on BIA-ALCL.

19.
Digit Health ; 9: 20552076231173554, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37179745

RESUMO

Objective: In contrast to the rising amount of financial investments for research and development in medical technology worldwide is the lack of usability and clinical readiness of the produced systems. We evaluated an augmented reality (AR) setup under development for preoperative perforator vessel mapping for elective autologous breast reconstruction. Methods: In this grant-supported research pilot, we used magnetic resonance angiography data (MR-A) of the trunk to superimpose the scans on the corresponding patients with hands-free AR goggles to identify regions-of-interest for surgical planning. Perforator location was assessed using MR-A imaging (MR-A projection) and Doppler ultrasound data (3D distance) and confirmed intraoperatively in all cases. We evaluated usability (System Usability Scale, SUS), data transfer load and documented personnel hours for software development, correlation of image data, as well as processing duration to clinical readiness (time from MR-A to AR projections per scan). Results: All perforator locations were confirmed intraoperatively, and we found a strong correlation between MR-A projection and 3D distance measurements (Spearman r = 0.894). The overall usability (SUS) was 67 ± 10 (=moderate to good). The presented setup for AR projections took 173 min to clinical readiness (=availability on AR device per patient). Conclusion: In this pilot, we calculated development investments based on project-approved grant-funded personnel hours with a moderate to good usability outcome resulting from some limitations: assessment was based on one-time testing with no previous training, a time lag of AR visualizations on the body and difficulties in spatial AR orientation. The use of AR systems can provide new opportunities for future surgical planning, but has more potential for educational (e.g., patient information) or training purposes of medical under- and postgraduates (spatial recognition of imaging data associated with anatomical structures and operative planning). We expect future usability improvements with refined user interfaces, faster AR hardware and artificial intelligence-enhanced visualization techniques.

20.
Plast Reconstr Surg ; 152(6): 1277-1285, 2023 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-37039525

RESUMO

BACKGROUND: Surgical therapy for widespread first carpometacarpal (CMC1) arthritis permanently alters the physiologic anatomy of the hand. The injection of autologous substances into the thumb saddle joint could achieve temporary pain relief and delay surgical indications. This trial aimed to compare the pain-reducing effects of autologous fat and/or platelet-rich plasma (PRP) with saline 0.9% in the infiltration therapy of carpometacarpal arthritis of the thumb (CMC1 arthritis). METHODS: A blinded, randomized controlled trial was conducted. Ninety-five patients with CMC1 arthritis were included in the study. The mean follow-up period was 2 years. Participants were injected with 1.5 mL of autologous fat, PRP, autologous fat and PRP, or 0.9% saline solution into the CMC1 joint, depending on the group allocation. The primary outcome of this study was the evaluation of pain reduction in each treatment group. RESULTS: The combination of fat and PRP was the only treatment that resulted in a significantly greater reduction in pain compared with 0.9% saline ( P = 0.003). Similarly, fat and PRP in combination was the only therapy group to achieve clinically relevant Quick Disabilities of Arm, Shoulder, and Hand score reduction, and the only group that showed a significantly better Medical Outcomes Study 36-Item Short-Form Health Survey score than 0.9% saline ( P = 0.016). No major complications were noted. CONCLUSIONS: In addition to pain reduction, the combination of autologous fat and PRP yields a relevant improvement in hand function and a corresponding improvement in quality of life. This treatment seems to be a viable and safe alternative to short-acting glucocorticoids. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, II.


Assuntos
Osteoartrite , Plasma Rico em Plaquetas , Humanos , Qualidade de Vida , Solução Salina , Osteoartrite/cirurgia , Glucocorticoides , Dor , Resultado do Tratamento
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