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1.
Handchir Mikrochir Plast Chir ; 56(2): 156-165, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38452796

RESUMEN

BACKGROUND: The European Society of Plastic, Reconstructive and Aesthetic Surgery (ESPRAS) comprises 40 national societies across Europe. In addition to ESPRAS, there are 8 different European Plastic Surgery societies representing Plastic Surgeons in Europe. The 4th European Leadership Forum (ELF) of ESPRAS, held under the motto "Stronger together in Europe" in Munich in 2023, aimed to collect and disseminate information regarding the national member societies of ESPRAS and European societies for Plastic Surgeons. The purpose was to identify synergies and redundancies and promote improved cooperation and exchange to enhance coordinated decision-making at the European level. MATERIAL AND METHODS: An online survey was conducted regarding the organisational structures, objectives and challenges of national and European societies for Plastic Surgeons in Europe. This survey was distributed to official representatives (Presidents, Vice Presidents and General Secretaries) and delegates of national and European societies at the ELF meeting. Missing information was completed using data obtained from the official websites of the respective European societies. Preliminary results were discussed during the 4th ELF meeting in Munich in March 2023. RESULTS: The ESPRAS survey included 22 national and 9 European Plastic Surgery societies representing more than 7000 Plastic Surgeons in Europe. Most national societies consist of less than 500 full members (median 182 members (interquartile range (IQR) 54-400); n=22). European societies, which covered the full spectrum or subspecialities, differed in membership types and congress cycles, with some requiring applications by individuals and others including national societies. The main purposes of the societies include research, representation against other disciplines, specialisation and education as well as more individual goals like patient care and policy regulation. CONCLUSION: This ESPRAS survey offers key insights into the structures, requirements and challenges of national and European societies for Plastic Surgeons, highlighting the relevance of ongoing close exchange between the societies to foster professional advancement and reduce redundancies. Future efforts of the ELF will continue to further explore strategies for enhancing collaboration and harmonisation within the European Plastic Surgery landscape.


Asunto(s)
Sociedades Médicas , Cirugía Plástica , Cirugía Plástica/organización & administración , Europa (Continente) , Humanos , Encuestas y Cuestionarios , Procedimientos de Cirugía Plástica , Liderazgo , Objetivos Organizacionales
2.
Handchir Mikrochir Plast Chir ; 55(6): 427-436, 2023 Dec.
Artículo en Alemán | MEDLINE | ID: mdl-37783212

RESUMEN

The ever-expanding number of transmen as well as their surgeons share an increasing interest in the construction of a neophallus. While the indication for surgery and the positive effect of a phalloplasty on the quality of life, mental health and sexual function has already been thoroughly analysed, there is a lack of data comparing and evaluating the surgical steps. During the consensus conference on the "choice of flaps for phalloplasty" at the annual meeting of the German-Speaking Society for Microsurgery of Peripheral Nerves and Vessels, the current literature was discussed and a consensus on the surgical technique of a phalloplasty was reached. This manuscript publishes jointly developed recommendations on the following topics: choice of flaps for phalloplasty, preoperative diagnostic tests before phalloplasty, urethral construction in the radial forearm flap and anterior lateral thigh flap, preformation of the urethra at the forearm or thigh, venous drainage of the radial forearm flap, innervation of the phallus, staged phalloplasty, coronaplasty and managing the donor site of a radial forearm flap.


Asunto(s)
Faloplastia , Cirugía de Reasignación de Sexo , Masculino , Humanos , Pene/cirugía , Microcirugia/métodos , Calidad de Vida , Cirugía de Reasignación de Sexo/métodos , Uretra/cirugía , Nervios Periféricos/cirugía
3.
Unfallchirurgie (Heidelb) ; 126(4): 299-311, 2023 Apr.
Artículo en Alemán | MEDLINE | ID: mdl-36976342

RESUMEN

The proportion of patients in the population beyond the 7th decade of life is increasing worldwide, especially in highly developed countries. Consequently, there is also an increasing need for complex lower extremity reconstructions after trauma, tumors, or infections in this age group. The reconstruction of soft tissue defects of the lower extremity should be performed according to the principle of the plastic-reconstructive ladder or elevator. The goal of reconstruction is to restore anatomy and function of the lower extremity to enable pain-free and stable standing and walking; however, for older patients in particular, a careful preoperative multidisciplinary planning, detailed preoperative assessment and optimization of comorbidities, such as diabetes, malnutrition or pathological vascular alterations, as well an age-adapted perioperative management are necessary. By implementing these principles, older and very old patients can maintain their mobility and autonomy, which are crucial for a high quality of life.


Asunto(s)
Extremidad Inferior , Procedimientos de Cirugía Plástica , Calidad de Vida , Humanos , Extremidad Inferior/cirugía , Anciano , Anciano de 80 o más Años
4.
Handchir Mikrochir Plast Chir ; 55(1): 53-59, 2023 Feb.
Artículo en Alemán | MEDLINE | ID: mdl-35445379

RESUMEN

PURPOSE: To evaluate whether a vascularized bone graft from the medial femur condyle (MFC) can successfully be used to reconstruct small bone defects (< 4 cm) on the upper extremity other than the scaphoid. PATIENTS AND METHODS: In 7 patients at the age of 28 to 66 years 8 vascularized bone grafts from the MFC were used to reconstruct bone defects on the upper extremity other than the scaphoid. Bone healing, complications, donor side morbidity, and patient´s satisfaction were evaluated. Follow-up was 3 to 40 months. Indications were: two nonunion of the distal radius in spite of several surgical procedures, one defect of the distal radius following a radius fracture with osteoarthritis of the radiocarpal joint, one acute trauma with partial loss of the carpus and radius due to an explosion injury, reconstruction of the first metacarpal (MC) following resection of a giant cell tumour, and three fusions between the 1st and 2nd MC as a salvage procedure after several surgical procedures at the saddle joint. RESULTS: There was a regular bony healing in 4 of the 8 cases; delayed bony healing was seen in three cases after 7, 8, and 9 months. In one case there was only a partial bony healing. Two donor side haematomas required surgical revision. Patient's satisfaction was high with 7 painless cases. CONCLUSION: Free vascularized bone grafts from the medial femur condyle can successfully be used to reconstruct bone defects up to 4 cm of the upper extremity other than the scaphoid.


Asunto(s)
Fracturas no Consolidadas , Procedimientos de Cirugía Plástica , Hueso Escafoides , Humanos , Adulto , Persona de Mediana Edad , Anciano , Hueso Escafoides/diagnóstico por imagen , Hueso Escafoides/cirugía , Hueso Escafoides/lesiones , Extremidad Superior/cirugía , Radio (Anatomía)/trasplante , Fémur/trasplante , Trasplante Óseo/métodos , Fracturas no Consolidadas/diagnóstico por imagen , Fracturas no Consolidadas/cirugía , Estudios Retrospectivos
5.
Handchir Mikrochir Plast Chir ; 54(4): 349-355, 2022 Aug.
Artículo en Alemán | MEDLINE | ID: mdl-35785807

RESUMEN

English Breast cancer and the surgical procedures associated with it have a major impact on the quality of life of affected patients. Research shows that the loss of the breast and the associated change in body image have a major impact on the female self-image for many women. This has a strong negative impact on the quality of life of those affected. With modern clinical outcome research including treatment results from the patient's perspective in the form of patient-reported outcome measures (PROMs), the satisfaction and quality of life of those affected can be measured, analysed and compared. This review examines the extent to which breast reconstruction improves the quality of life for many women and how the different reconstruction methods vary in their impact on quality of life and satisfaction. In addition, the review discusses the importance of standardised recording and analysis of PROMs in combination with objective clinical data and their integration into the treatment process, and it demonstrates implementation options. Such systematic recording of PROMs enables the creation of databases and registers, the evaluation of which provides information that can be used for scientific and clinical purposes. Based on these research results, prognostic models can be created and treatment results can be examined in comparative studies facilitating clinical decision-making and quality controls.


Asunto(s)
Neoplasias de la Mama , Mamoplastia , Imagen Corporal , Neoplasias de la Mama/cirugía , Femenino , Humanos , Calidad de Vida
6.
Clin Plast Surg ; 48(2): 331-340, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33674054

RESUMEN

Demand has increased for complex lower-extremity reconstruction in the steadily growing elderly patient group in many highly developed countries. Microsurgery is indispensable for soft tissue reconstruction and osseous consolidation salvaging leg function and preventing amputation, with its devastating consequences. Microvascular reconstruction can be performed successfully in specialized centers with low donor-site morbidity, minimal operative time, and comparably low complication rates. However, this requires thorough multidisciplinary planning, preoperative optimization of risk factors, such as diabetes and malnutrition, and individually adapted intraoperative management. Implementing these principles can reliably restore ambulation and mobility, maintaining autonomy in this population.


Asunto(s)
Extremidad Inferior/cirugía , Microcirugia , Procedimientos de Cirugía Plástica/métodos , Traumatismos de los Tejidos Blandos/cirugía , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Extremidad Inferior/lesiones , Masculino , Cuidados Posoperatorios
7.
Transl Androl Urol ; 9(4): 1773-1777, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32944538

RESUMEN

This case report highlights the importance of a wide differential diagnosis in transgender patients. A 77-year-old transgender (female-to-male) with recurrent urinary tract infections (UTI) and obstructive voiding difficulties presented with a perineal cyst. Further examinations, including computed tomography (CT) and puncture, revealed that the patient had a symptomatic Bartholin gland cyst, a phenomenon that normally only affects women. In his gender confirmation surgery (GCS) 30 years before, the patient's female labia minora and Bartholin glands were used to lengthen the urethra for the phalloplasty. This explains the unusual location and the prolonged time to the correct diagnose. We decided to perform an incision of the fluid collection from perineal. A follow-up sonography after one month revealed a remaining cyst size of 6 mL, which was assumed to be residual fluid or newly produced liquid; however, the patient has not had any UTIs since the incision of the cyst. Our case seems to be the first description of a symptomatic Bartholin gland cyst in a trans man. This stresses the importance of an expanded understanding of sex/gender concepts, and underlines one of the many possible diagnostic pitfalls when treating trans people.

8.
Handchir Mikrochir Plast Chir ; 52(4): 310-315, 2020 Aug.
Artículo en Alemán | MEDLINE | ID: mdl-32823366

RESUMEN

Perioperative management in microsurgery is a key element of success in reconstructive surgery. There are no uniform concepts for this in the German-speaking countries and individual schemes differ significantly from each other, as ascertained in an expert survey. In the course of the 41st Annual Conference of the German-speaking Working Group for Microsurgery (DAM) held in Munich in November 2019, concepts were evaluated and a survey was carried out and summarised as a position paper in due consideration of the scientific literature.


Asunto(s)
Microcirugia , Procedimientos de Cirugía Plástica , Consenso , Nervios Periféricos/cirugía
9.
J Bone Jt Infect ; 5(3): 160-171, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32566456

RESUMEN

Introduction: Reconstruction of composite soft-tissue defects with extensor apparatus deficiency in patients with periprosthetic joint infection (PJI) of the knee is challenging. We present a single-centre multidisciplinary orthoplastic treatment concept based on a retrospective outcome analysis over 20 years. Methods and Results: One-hundred sixty patients had PJI after total knee arthroplasty. Plastic surgical reconstruction of a concomitant perigenicular soft-tissue defect was indicated in 47 patients. Of these, six presented with extensor apparatus deficiency. One patient underwent primary arthrodesis and five patients underwent reconstruction of the extensor apparatus. The principle to reconstruct missing tissue 'like with like' was thereby favoured: Two patients with a wide soft-tissue defect received a free anterolateral thigh flap with fascia lata; one patient with a smaller soft-tissue defect received a free sensate, extended lateral arm flap with triceps tendon; and two patients who did not qualify for free flap surgery received a pedicled medial sural artery perforator gastrocnemius flap. Despite good functional results 1 year later, long-term follow-up revealed that two patients had to undergo arthrodesis because of recurrent infection and one patient was lost to follow-up. Conclusion: These results show that PJI of the knee and extensor apparatus deficiency is a dreaded combination with a poor long-term outcome. Standardization of surgical techniques for a defined PJI problem and consensus on study variables may facilitate interinstitutional comparisons of outcome data, and hence, improvement of treatment concepts.

10.
Handchir Mikrochir Plast Chir ; 51(6): 418-423, 2019 Dec.
Artículo en Alemán | MEDLINE | ID: mdl-31698485

RESUMEN

The profitability of medical treatment has gained increasing importance in health politics and likewise has become a considerable part of a microsurgeon's daily practice. The resulting cost pressure leads to microsurgeons having to justify their often complex and expensive treatments against hospital providers and health insurances. In this position paper of the German Speaking Group for Microsurgery of Peripheral Nerves and Vessels, we analyze the current status of profitability of microsurgical extremity and breast reconstruction, and its impact on choice of therapy and residency training. We specifically highlight the available literature, that shows often reduced long-term treatment costs after microsurgical reconstruction in comparison to cheaper initial treatments. The statements are based on a consensus workshop on the 40th meeting of the DAM in Lugano, Switzerland.


Asunto(s)
Microcirugia , Procedimientos de Cirugía Plástica , Cirugía Plástica , Internado y Residencia , Mamoplastia/economía , Microcirugia/economía , Microcirugia/métodos , Nervios Periféricos/cirugía , Procedimientos de Cirugía Plástica/economía , Procedimientos de Cirugía Plástica/métodos , Suiza
11.
Ann Plast Surg ; 83(4): 464-467, 2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-31524744

RESUMEN

INTRODUCTION: In reconstructive surgery, fat volume augmentation is often necessary for esthetic or functional reasons. As an alternative to synthetic and xenogeneic materials, autologous fat grafting (AFG) based on liposuction is gaining popularity, yet successful transplantation and long-term volume maintenance are difficult. Standard tumescent solution formulations neglect adipocyte and stromal vascular fraction (SVF) cell survival during extraction, as well as SVF differentiation into adipocytes thereafter, all of which are crucial for the success of AFG. Here we hypothesized that addition of ascorbic acid (AA) to the tumescent solution could prevent liposuction-induced cell damage. MATERIALS AND METHODS: The effect of 0.1 mmol/L AA in tumescent solution was investigated in a previously described ex vivo model of AFG. Briefly, excision fat was infiltrated with tumescent solution, with or without AA, and incubated for 20 minutes at 37°C. Hand-assisted liposuction was then performed with a blunt cannula. Total cell viability, clonogenicity, and differentiation capacity of the SVF cells were assessed. RESULTS: With AA, 10.3% more cells and in particular 14.9% more adipocytes survived liposuction. Clonogenicity, adipocyte and osteoblast differentiation by SVF cells remained unchanged. CONCLUSIONS: Addition of AA successfully improved survival of adipocytes during liposuction without affecting SVF growth and differentiation. This study therefore identified a useful supplement to the tumescent solution which may lead to improving AFG success.


Asunto(s)
Grasa Abdominal/trasplante , Tejido Adiposo/trasplante , Ácido Ascórbico/farmacología , Supervivencia Celular/fisiología , Lipectomía/métodos , Adipocitos/trasplante , Adulto , Anciano , Anestésicos Locales , Diferenciación Celular , Estudios de Cohortes , Femenino , Supervivencia de Injerto , Humanos , Persona de Mediana Edad , Sensibilidad y Especificidad , Células del Estroma/trasplante , Trasplante Autólogo/métodos
12.
J Foot Ankle Surg ; 58(2): 363-367, 2019 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-30612869

RESUMEN

Surgical treatment options in a chondroblastoma of the talus breaching the subchondral layer with imminent risk of talar collapse in the weightbearing area are limited. A joint-preserving surgery should be advocated. Because current treatment options such as curettage, cryosurgery, or radiofrequency ablation may not be able to prevent a talar dome breakdown in large defects, nonvascularized bone grafting has been advocated to fill the void. To overcome the lack of vitality, a vascularized bone autograft might be an attractive alternative. We present 3 cases where a large talar defect owing to a chondroblastoma was treated with a vascularized bone autograft. In 1 of the cases, a free microvascular iliac crest bone graft was used, whereas in the other 2 cases, a vascularized graft was harvested from the medial femoral condyle. Computed tomographic scans demonstrated a stable incorporation of the graft in all cases. All patients were highly satisfied with the obtained results and showed a clinical functional outcome similar to the contralateral foot after 36, 60, and 72 months. At the latest radiographic follow-up, no evidence of recurrence was observed. In conclusion, a free vascularized bone autograft can be used to treat a large talar defect owing to chondroblastoma in young patients.


Asunto(s)
Neoplasias Óseas/cirugía , Trasplante Óseo/métodos , Condroblastoma/cirugía , Astrágalo/patología , Astrágalo/cirugía , Adolescente , Adulto , Articulación del Tobillo/diagnóstico por imagen , Articulación del Tobillo/fisiopatología , Artralgia/diagnóstico , Artralgia/etiología , Autoinjertos , Neoplasias Óseas/diagnóstico por imagen , Neoplasias Óseas/patología , Condroblastoma/diagnóstico por imagen , Condroblastoma/patología , Legrado/métodos , Estudios de Seguimiento , Humanos , Imagen por Resonancia Magnética/métodos , Masculino , Osteotomía/métodos , Tomografía de Emisión de Positrones/métodos , Medición de Riesgo , Muestreo , Astrágalo/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Adulto Joven
13.
Biomaterials ; 192: 118-127, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-30448696

RESUMEN

Large and complex bone defects represent challenging clinical scenarios, typically requiring autologous vascularized bone transplants. In order to bypass the numerous associated limitations, here we aimed at ectopically prefabricating a bone graft surrogate with vascular pedicle. A hollow cylinder of devitalized cancellous bone was used to define the space of a large bone substitute. This space was filled with devitalized pellets of engineered hypertrophic cartilage as bone-inducing material, in combination or not with stromal vascular fraction (SVF) of adipose tissue as source of osteoprogenitors and endothelial cells. Vascularization of the space was targeted through axial insertion of an arterio-venous (AV) bundle. Constructs were subcutaneously implanted in nude rats for 12 weeks and analyzed for bone formation and vascularization by histology and microtomography. Retrieved constructs were extensively vascularized in all conditions, with vessels sprouting from the AV bundle and reaching a higher density in the axially central volume. Bone tissue was formed through remodeling of hypertrophic cartilage, and quantitatively correlated with de novo vascularization. Our study demonstrates feasibility to prefabricate large, pedicled bone grafts in predefined shapes. The combination of an AV bundle with engineered hypertrophic cartilage provided a germ for the coupled processes of vascularization and bone formation. The demonstrated osteoinductivity of devitalized hypertrophic cartilage offers the opportunity of implementing the proposed regenerative surgery strategy through off-the-shelf materials.


Asunto(s)
Sustitutos de Huesos/química , Trasplante Óseo/métodos , Neovascularización Fisiológica , Osteogénesis , Ingeniería de Tejidos/métodos , Adulto , Animales , Cartílago/citología , Células Cultivadas , Células Endoteliales/citología , Humanos , Masculino , Células Madre Mesenquimatosas/citología , Ratas Desnudas , Adulto Joven
14.
Muscle Nerve ; 58(4): 566-572, 2018 10.
Artículo en Inglés | MEDLINE | ID: mdl-30028517

RESUMEN

INTRODUCTION: To restore full function following nerve crush injuries is critical but challenging. In an attempt to develop a viable therapy, we evaluated the effect of rat adipose-derived stem cells (rASC) in 2 different settings of a sciatic crush injury model. METHODS: In the first group, after 14 days of nerve crush injury, rASCs were injected distal to the lesion under ultrasound guidance. In the other group, alleviation of compression through clip removal (CR) was combined with epineural injection of rASCs. Gait analyses, MRI, gastrocnemius muscle weight ratio (MWR), and histomorphometry were performed for outcome analysis. RESULTS: CR combined with rASC injection resulted in less muscle atrophy, as evidenced by MWR. These findings are further supported by better functional and anatomical outcomes. DISCUSSION: Animals treated with CR and epineural stem cell injection showed enhanced anatomical and functional recovery. Muscle Nerve 58: 566-572, 2018.


Asunto(s)
Tejido Adiposo/citología , Lesiones por Aplastamiento/patología , Trasplante de Células Madre Mesenquimatosas , Regeneración Nerviosa , Traumatismos de los Nervios Periféricos/patología , Nervio Ciático/lesiones , Animales , Imagen de Difusión Tensora , Femenino , Análisis de la Marcha , Imagen por Resonancia Magnética , Músculo Esquelético/patología , Tamaño de los Órganos , Ratas , Ratas Sprague-Dawley , Nervio Ciático/patología , Nervio Ciático/fisiología
15.
Stem Cells Transl Med ; 5(8): 1090-7, 2016 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-27334490

RESUMEN

UNLABELLED: : Recapitulation of endochondral ossification (ECO) (i.e., generation of marrow-containing ossicles through a cartilage intermediate) has relevance to develop human organotypic models for bone or hematopoietic cells and to engineer grafts for bone regeneration. Unlike bone marrow-derived stromal cells (also known as bone marrow-derived mesenchymal stromal/stem cells), adipose-derived stromal cells (ASC) have so far failed to form a bone organ by ECO. The goal of the present study was to assess whether priming human ASC to a defined stage of chondrogenesis in vitro allows their autonomous ECO upon ectopic implantation. ASC were cultured either as micromass pellets or into collagen sponges in chondrogenic medium containing transforming growth factor-ß3 and bone morphogenetic protein-6 for 4 weeks (early hypertrophic templates) or for two additional weeks in medium supplemented with ß-glycerophosphate, l-thyroxin, and interleukin1-ß to induce hypertrophic maturation (late hypertrophic templates). Constructs were implanted in vivo and analyzed after 8 weeks. In vitro, ASC deposited cartilaginous matrix positive for glycosaminoglycans, type II collagen, and Indian hedgehog. Hypertrophic maturation induced upregulation of type X collagen, bone sialoprotein, and matrix metalloproteinase13 (MMP13). In vivo, both early and late hypertrophic templates underwent cartilage remodeling, as assessed by MMP13- and tartrate-resistant acid phosphatase-positive staining, and developed bone ossicles, including bone marrow elements, although to variable degrees of efficiency. In situ hybridization for human-specific sequences and staining with a human specific anti-CD146 antibody demonstrated the direct contribution of ASC to bone and stromal tissue formation. In conclusion, despite their debated skeletal progenitor nature, human ASC can generate bone organs through ECO when suitably primed in vitro. SIGNIFICANCE: Recapitulation of endochondral ossification (ECO) (i.e., generation of marrow-containing ossicles through a cartilage intermediate) has relevance to develop human organotypic models for bone or hematopoietic cells and to engineer grafts for bone regeneration. This study demonstrated that expanded, human adult adipose-derived stromal cells can generate ectopic bone through ECO, as previously reported for bone marrow stromal cells. This system can be used as a model in a variety of settings for mimicking ECO during development, physiology, or pathology (e.g., to investigate the role of BMPs, their receptors, and signaling pathways). The findings have also translational relevance in the field of bone regeneration, which, despite several advances in the domains of materials and surgical techniques, still faces various limitations before being introduced in the routine clinical practice.


Asunto(s)
Tejido Adiposo/citología , Huesos/metabolismo , Cartílago/metabolismo , Diferenciación Celular , Linaje de la Célula , Condrogénesis , Osteogénesis , Células del Estroma/metabolismo , Ingeniería de Tejidos/métodos , Biomarcadores/metabolismo , Proteína Morfogenética Ósea 6/metabolismo , Cartílago/irrigación sanguínea , Células Cultivadas , Condrogénesis/genética , Medios de Cultivo/metabolismo , Regulación de la Expresión Génica , Proteínas Hedgehog/genética , Proteínas Hedgehog/metabolismo , Humanos , Osteogénesis/genética , Fenotipo , Transducción de Señal , Factores de Tiempo , Factor de Crecimiento Transformador beta3/metabolismo
16.
J Orthop Res ; 33(8): 1111-9, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25994595

RESUMEN

We investigated whether nasal chondrocytes (NC) can be used to generate composite constructs with properties necessary for the repair of osteochondral (OC) lesions, namely maturation, integration and capacity to recover from inflammatory burst. OC grafts were fabricated by combining engineered cartilage tissues (generated by culturing NC or articular chondrocytes - AC - onto Chondro-Gide® matrices) with devitalized spongiosa cylinders (Tutobone®). OC tissues were then exposed to IL-1ß for three days and cultured for additional 2 weeks in the absence of IL-1ß. Cartilage maturation extent was assessed (immune) histologically, biochemically and by delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) while cartilage/bone integration was assessed using a peel-off mechanical test. The use of NC as compared to AC allowed for more efficient cartilage matrix accumulation and superior integration of the cartilage/bone layers. dGEMRIC and biochemical analyzes of the OC constructs showed a reduced glycosaminoglycan (GAG) contents upon IL-1ß administration. Cartilaginous matrix contents and integration forces returned to baseline up on withdrawal of IL-1ß. By having a cartilage layer well developed and strongly integrated to the subchondral layer, OC tissues generated with NC may successfully engraft in an inflammatory post-surgery joint environment.


Asunto(s)
Condrocitos/trasplante , Nariz/citología , Ingeniería de Tejidos , Anciano , Cartílago Articular/citología , Femenino , Glicosaminoglicanos/análisis , Humanos , Interleucina-1beta/farmacología , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad
17.
Stem Cell Res Ther ; 5(1): 18, 2014 Jan 29.
Artículo en Inglés | MEDLINE | ID: mdl-24476740

RESUMEN

INTRODUCTION: Chronic wounds are a major health-care issue, but research is limited by the complexity and heterogeneity in terms of wound etiology as well as patient-related factors. A suitable animal model that replicates the situation in humans is not available. Therefore, the aim of the present work is to present a standardized human wound model and the data of a pilot study of topically applied progenitor cells in a sacral pressure sore. METHODS: Three patients underwent cell harvest from the iliac crest at the time of the initial debridement. Forty-eight hours after bone marrow harvest and debridement, the CD34+ selected cell suspension was injected into the wound. With the aid of a laser scanner, three-dimensional analyses of wound morphometry were performed until the defect was reconstructed with a local flap 3 weeks after debridement. RESULTS: Decreases in volume to 60%±6% of baseline on the sham side and to 52%±3% of baseline on the cell side were measured. Histologic work-up revealed no signs of metaplastic, dysplastic, or neoplastic proliferation/differentiation after progenitor cell treatment. CD34+ cells were detected in the biopsies of day 0. CONCLUSIONS: The pressure sore wound model allows investigation of the initial 3 weeks after cell-based therapy. Objective outcome analysis in terms of wound volume and histology can be performed without, or with, minimal additional morbidity, and the anatomy of the sacral area allows a control and study side in the same patient. Therefore, this model can serve as a standard for wound-healing studies. TRIAL REGISTRATION: ClinicalTrials.gov NCT00535548.


Asunto(s)
Trasplante de Células Madre Mesenquimatosas , Úlcera por Presión/terapia , Adulto , Humanos , Masculino , Persona de Mediana Edad , Región Sacrococcígea/patología
18.
J Plast Surg Hand Surg ; 45(1): 51-3, 2011 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-20158423

RESUMEN

Fat embolism syndrome is a rare complication that develops after extended soft tissue disruption by liposuction, in particular if combined with time consuming, multiple procedures. Early signs are non-specific and often not considered, so that diagnosis and correct management may be delayed. We report a case in which liposuction combined with other aesthetic surgical procedures caused a fat embolism syndrome in a 46-year-old woman, which was followed by multiple organ failure and the development of sepsis with perimammary abscesses. Extended liposuction of the abdomen and thighs, bilateral augmentation mammaplasty, and stripping of both greater saphenous veins were combined.


Asunto(s)
Embolia Grasa/etiología , Procedimientos de Cirugía Plástica/efectos adversos , Embolia Grasa/terapia , Femenino , Humanos , Lipectomía/efectos adversos , Mamoplastia/efectos adversos , Persona de Mediana Edad , Vena Safena/cirugía , Resultado del Tratamiento , Procedimientos Quirúrgicos Vasculares/efectos adversos
19.
Clin Anat ; 22(2): 261-6, 2009 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-19089997

RESUMEN

For successful reconstruction of osteochondral lesions of the talus, the anatomic configuration of the talar edge must be respected. This study evaluated the radiographic configuration of the talar edge in the anterior-posterior (AP) view by analyzing medial and lateral talar edge angles and radii in 81 patients with a true AP view and without ankle pathology. The mean lateral talar edge angle was 91.8 degrees , and the mean medial talar edge angle was 110.0 degrees . The medial frontal talar edge radius was 4.8 mm and the lateral 3.5 mm, respectively. No correlation between angle and radius was found. These results revealed a significant difference between the medial and the lateral talar edge configuration. This may be due to the three-dimensional function of the human ankle joint. No study so far has addressed these differences radiologically. These differences should be addressed in the reconstruction of osteochondral lesions and be included in the preoperative planning.


Asunto(s)
Astrágalo/anatomía & histología , Astrágalo/diagnóstico por imagen , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Osteocondritis/diagnóstico , Osteocondritis/fisiopatología , Osteocondritis/cirugía , Radiografía , Procedimientos de Cirugía Plástica/métodos , Astrágalo/fisiología , Soporte de Peso/fisiología , Adulto Joven
20.
Aesthetic Plast Surg ; 29(6): 489-95, 2005.
Artículo en Inglés | MEDLINE | ID: mdl-16328634

RESUMEN

The perichondrial cutaneous graft (PCCG), a reliable composite graft that provides stability, is routinely harvested from the anterior conchal bowl. This established PCCG was simplified by using the less conspicuous posterior auricular donor site, which can be closed without the need of cartilage resection for reconstruction with a postauricular interpolated skin island. Patients with basal cell carcinoma of the nose underwent reconstruction of the nose with a PCCG if parts of the tip cartilage or the fibrofatty tissue were resected. The defect surface area was assessed with a template. Follow-up evaluation included assessment of graft survival, donor-site morbidity, nostril stability, and aesthetic outcome. Of the 14 patients included in the study, whose average defect sizes were 2 cm2 (ala) and 2.5 cm2 (tip), 79% showed primary complete healing. Nostril stability was symmetrical 6 months postoperatively, and no contractions or depressed contour had occurred. In one case, a hyperpigmented area resulted in a slightly imperfect color match. All the donor sites healed without deformity or destabilization of the ear. With the use of this new posterior auricular donor site for graft harvest, functional, stable, and aesthetic reconstruction of the nose can be achieved. The graft- and donor-site morbidity rates are very low, and the results are fully satisfying.


Asunto(s)
Neoplasias Nasales/cirugía , Rinoplastia/métodos , Trasplante de Piel/métodos , Anciano , Anciano de 80 o más Años , Cartílago Auricular/trasplante , Femenino , Humanos , Masculino , Persona de Mediana Edad , Trasplante Autólogo , Cicatrización de Heridas
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