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1.
J Neurointerv Surg ; 2024 May 29.
Artículo en Inglés | MEDLINE | ID: mdl-38811146

RESUMEN

BACKGROUND: Approximately 30% of patients presenting with acute ischemic stroke (AIS) due to large vessel occlusion have pre-stroke modified Rankin Scale (mRS) scores ≥2. We aimed to investigate the safety and outcomes of endovascular treatment (EVT) in patients with AIS with moderate pre-stroke disability (mRS score 3) in an extended time frame (ie, 6-24 hours from the last time known well). METHODS: Data were collected from five centers in Europe and the USA from January 2018 to January 2023 and included 180 patients who underwent EVT in an extended time frame. Patients were divided into two groups of 90 each (Group 1: pre-mRS 0-2; Group 2: pre-mRS 3; 71% women, mean age 80.3±11.9 years). Primary outcomes were: (1) 3-month good clinical outcome (Group 1: mRS 0-2, Group 2: mRS 0-3) and ΔmRS; (2) any hemorrhagic transformation (HT); and (3) symptomatic HT. Secondary outcomes were successful and complete recanalization after EVT and 3-month mortality. RESULTS: No between-group differences were found in the 3-month good clinical outcome (26.6% vs 25.5%, P=0.974), any HT (26.6% vs 22%, P=0.733), and symptomatic HT (8.9 vs 4.4%, P=0.232). Unexpectedly, ΔmRS was significantly smaller in Group 2 compared with Group 1 (1.64±1.61 vs 2.97±1.69, P<0.001). No between-group differences were found in secondary outcomes. CONCLUSION: Patients with pre-stroke mRS 3 are likely to have similar outcomes after EVT in the extended time frame to those with pre-stroke mRS 0-2, with no difference in safety.

2.
J Funct Morphol Kinesiol ; 9(2)2024 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-38651430

RESUMEN

Bone tumors of the upper limb are a common cause of bone pain and pathological fractures in both old and young populations. Surgical reconstruction and limb salvage have become valid options for these patients despite this kind of surgery being challenging due to the need for wide bone resection and the involvement of surrounding soft tissues. Computer-assisted technology helps the surgeon in pre-operative planning and in designing customized implants. The aim of this study was to investigate the surgical outcomes and complications of custom-made prostheses in oncologic reconstruction of the upper limb and if they are reliable options for patients suffering from aggressive tumors. An electronic search on PubMed, Google Scholar, and Web of Knowledge was conducted to identify all available articles on the use of custom-made prostheses in oncological resections of the upper limb. Twenty-one studies were included in the review, comprising a total of 145 patients with a mean age of 33.68 years. The bone involved was the humerus in 93 patients, and the radius was involved in 36 patients. There were only six cases involving proximal ulna, three cases involving the scapula, and seven cases involving the elbow as well as soft tissues around it. The most frequent primary tumor was the giant cell tumor, with 36 cases, followed by osteosarcoma with 25 cases, Ewing Sarcoma with 17 cases, and Chondrosarcoma with 7 total cases. Forty patients were affected by bone metastases (such as renal cell cancer, breast cancer, melanoma, and rectal cancer) or hematologic diseases involving bone (lymphoma, myeloma, or non-Hodgkin disease). Custom-made prostheses are a viable option for patients who suffer from malignant tumors in their upper limbs. They are a reliable aid for surgeons in cases of extensive resections.

4.
Geriatrics (Basel) ; 8(6)2023 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-37987472

RESUMEN

The prevalence of hand injuries increases with age, with elderly patients being more prone to hand lesions due to a combination of factors, such as reduced bone density and muscle strength, impaired sensation, and cognitive impairment. Despite the high incidence of hand injuries in the elderly population, few studies have addressed the management and outcomes of hand lesions in this age group. This study aimed to analyze the characteristics and management of hand lesions in patients over 80 years old. The authors conducted a retrospective analysis of medical records of patients over 80 years old who reached their Emergency Department with hand lesions between 2001 and 2020. Data on demographics, injury characteristics, and management were collected and analyzed. A total of 991 patients with hand lesions were included in the study, with a mean age of 84.9 years. The most common causes of injuries were domestic accidents (32.6%) and traffic accidents (12.8%). The most frequent types of hand lesions were fractures (23.5%) and superficial wounds (20.5%). Overall, 23.4% underwent surgical treatment for their hand issue, and 22.1% had associated injuries, among which, the most common were head trauma and other bone fractures. In conclusion, hand lesions in patients over 80 years old are frequent and pose significant challenges in diagnosis and management. Particular attention should be paid to associated injuries and limit indications to surgery when strictly necessary.

5.
J Orthop ; 44: 17-21, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37637499

RESUMEN

Introduction: Radial forearm flap, first described in the early eighties in China, is a well-known and handy flap to cover soft tissue defects of the distal upper limb. It has, though, some inconveniences, such as the sacrifice of the radial artery and non-neglectable esthetic sequelae in the donor site. In the following years, a similar flap based on the perforators of the radial artery has been described as achieving similar results, allowing to spare a main vessel. The authors reviewed retrospectively the patients that underwent surgery with one of those two flaps in their center to compare outcomes. Materials and methods: Patients operated between January 2016 and January 2022 have been reviewed. Ten had a classic radial artery flap, and ten had a radial artery perforator flap. Twelve weeks after surgery, Vancouver Scar Scale was used to assess the results at the donor site and over the flap. Reintervention and failure rate within one year and patient satisfaction -using a visual analog scale ranging from 0 to ten-at 12 months were also assessed. Results: All classic radial artery flap group patients had "successful" surgery, and none needed secondary surgery. On the other side, three patients required a second surgery in the perforator flap group, and nine out of ten ended up with "successful" flaps. Mean Vancouver Scar Scale results regarding the flap are comparable, whereas those at the donor site are significantly better in the patients with the perforator flap. Patients' satisfaction results are similar in both groups. Conclusion: The radial artery perforator flap is an important flap to be held in mind by all surgeons approaching reconstruction of the elbow, the forearm, and the hand, and should be preferred, when possible, to the classic radial forearm flap.

6.
Acta Biomed ; 94(S2): e2023050, 2023 06 23.
Artículo en Inglés | MEDLINE | ID: mdl-37366197

RESUMEN

BACKGROUND AND AIM OF THE WORK: Carpal Tunnel Syndrome (CTS) is provoked by the compression of the median nerve, leading to nerve ischemia, endoneural edema, venous congestion, and subsequent metabolic alterations. Conservative treatments could be considered. The present study investigates the efficacy of a specific blend of a 600 mg dietary integrator composed of acetyl-L-carnitine, α-lipoic acid, phosphatidylserine, Curcumin, C, E and B1, B2, B6 and B12 vitamins in patients with mild to moderate CTS. METHODS: The present investigation involved the outpatients who were planned to undergo open surgical decompression of the median nerve awaiting surgery from June 2020 and February 2021. CTS surgery has been significantly reduced in our institutions during the COVID-19 pandemic. Patients were randomized into Group A (dietary integration 600 mg twice day for 60 days) and Group B (control group, no drug administration). Clinical and functional improvement was prospectively measured after 60 days Results: One-hundred forty-seven patients completed the study, 69 from group A and 78 from group B. BCTQ was significantly improved with the drug administration, as well as BCTQ symptoms subscale, and the pain. BCTQ function subscale and Michigan Hand Questionnaire was not significantly improved. Ten patients in group A (14.5%) declared that they didn't need further treatment. No major side effects were noticed. CONCLUSIONS: Dietary integration could be considered as an option in patients who could not undergo surgery. Symptoms and pain could improve, but surgery remains the gold standard for recovery of function in mild to moderate CTS.


Asunto(s)
COVID-19 , Síndrome del Túnel Carpiano , Curcumina , Ácido Tióctico , Complejo Vitamínico B , Humanos , Síndrome del Túnel Carpiano/tratamiento farmacológico , Síndrome del Túnel Carpiano/cirugía , Acetilcarnitina/uso terapéutico , Complejo Vitamínico B/uso terapéutico , Curcumina/uso terapéutico , Fosfatidilserinas/uso terapéutico , Estudios Prospectivos , Pandemias , Dolor/tratamiento farmacológico , Resultado del Tratamiento
7.
Acta Biomed ; 92(S3): e2021535, 2022 03 10.
Artículo en Inglés | MEDLINE | ID: mdl-35604272

RESUMEN

BACKGROUND AND AIM: Bony Mallet Finger or Mallet Fracture is a common injury of the hand, which follows a forced flexion of the extended distal interphalangeal joint, that leads to a bony avulsion of the distal phalanx. Depending on fracture extension and dislocation, those lesions can either be treated conservatively or surgically. Several surgical options have been described in the literature. The aim of this study is to compare retrospectively two percutaneous pinning techniques: the extension block technique according to Ishiguro vs an original single Kirshner wiring (Umbrella technique). METHODS: Between January 1998 and December 2019, among all patients treated surgically for a Mallet Fracture with either the Ishiguro' and the Umbrella technique, 98 have been included in this study. All patients have been assessed one year after surgery using the Crawford method. RESULTS: With both techniques better results have been achieved in younger patients and for those treated early. The umbrella technique seems to have better results in patients with fracture classified as 2b or 2c (Wehbe and Schneider classification), whereas the Ishiguro technique seems more appropriate for patients with a 1b fracture. Complication rate and typology vary depending on the used technique. CONCLUSIONS: The Ishiguro' and the Umbrella technique both lead to good results for the treatment of surgical Mallet Fractures. The choice of the best type of pinning should mainly depend on fracture extension and time elapsed from trauma.


Asunto(s)
Traumatismos de los Dedos , Falanges de los Dedos de la Mano , Fracturas Óseas , Deformidades Adquiridas de la Mano , Traumatismos de los Tendones , Hilos Ortopédicos/efectos adversos , Traumatismos de los Dedos/complicaciones , Traumatismos de los Dedos/diagnóstico por imagen , Traumatismos de los Dedos/cirugía , Falanges de los Dedos de la Mano/lesiones , Falanges de los Dedos de la Mano/cirugía , Fijación Interna de Fracturas/métodos , Fracturas Óseas/complicaciones , Fracturas Óseas/diagnóstico por imagen , Fracturas Óseas/cirugía , Deformidades Adquiridas de la Mano/complicaciones , Deformidades Adquiridas de la Mano/cirugía , Humanos , Estudios Retrospectivos , Traumatismos de los Tendones/cirugía , Resultado del Tratamiento
8.
J Clin Med ; 11(8)2022 Apr 13.
Artículo en Inglés | MEDLINE | ID: mdl-35456256

RESUMEN

2020 will be remembered worldwide as the year of COVID-19 outbreak. The onset of this pandemic abruptly changed everybody's life and, in a particular manner, doctors' lives. Our hand surgery department became rapidly one of the first COVID-19-specialized wards in Italy, impacting considerably the authors' routines and activities. In this paper, the authors focus on how the demographics of patients with hand trauma changed and how they had to modify their activity. The authors retrospectively took into consideration all patients reaching their emergency department (ED) with hand trauma between 9 March 2020 (the day of the beginning of the first lockdown in Italy) and 8 March 2021 and compared them to those who reached the ED in the three previous years. Authors have analyzed the number of patients, their gender and age, the severity of their trauma, where the trauma occurred, the type of lesion, the percentage of patients who underwent surgery, and the percentage of patients who had an emergency admission. In the last year, the number of patients reaching the ED for a hand trauma has been reduced by two thirds (975 patients during the past year), the mean age of those patients has slightly increased, the severity of cases has increased, places of trauma and type of lesions have changed, and, lastly, the percentage of patients needing surgery who were admitted immediately has increased. This paper shows how the type of patients reaching the ED changed and discusses how surgeons evolved and modified their habits in treating those patients during the first lockdown and the year that followed.

9.
J Cosmet Dermatol ; 21(2): 750-757, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-33786967

RESUMEN

INTRODUCTION: Treatment of fingers tissue loss is particularly challenging as it often necessitates advanced reconstructive techniques such as flaps or grafts, with esthetic and functional results that are not always as good as hoped for, with long healing times. Recently, along with tissue engineering development, numerous types of dermal substitute have been commercialized, with promising possibilities of treatment in finger tissue loss. In the author's unit, Matriderm® is the most commonly used dermal substitute. As described by the manufacturer, this scaffold is designed to be covered with a split-thickness skin graft. In using a two-step procedure, the authors realized that in most cases of fingertips injuries, at three weeks follow-up, the wound appeared in an advanced state of healing, which permitted to avoid grafting. MATERIAL AND METHODS: Between October 2017 and October 2018, 27 fingers have been included in this study. Patients have been divided in two groups: those treated with Matriderm® alone (15 fingers) and those who had a skin graft three weeks after the first surgery (12 fingers). At the 6-month follow-up, authors evaluated the esthetic results with the Vancouver Scar Scale (VSS), the functional results with Quick Disability of the Arm, Shoulder and Hand (qDASH) score, and sensibility by the mean of two-point discrimination test (2-PD). RESULTS: All outcomes were overlapping in patients treated with or without skin graft: mean VSS was 2.3, mean qDASH was 13.3, and mean 2-PD was 7.7 mm. CONCLUSIONS: The results obtained allow to consider Matriderm® , used also without skin graft coverage, as a valid solution for treatment of fingertip tissue loss.


Asunto(s)
Piel Artificial , Cicatrización de Heridas , Heridas y Lesiones/cirugía , Colágeno , Elastina , Dedos , Humanos , Trasplante de Piel
10.
Tech Hand Up Extrem Surg ; 25(4): 213-218, 2021 Jan 04.
Artículo en Inglés | MEDLINE | ID: mdl-33399388

RESUMEN

Proximal row carpectomy (PRC) is a long-time, well-accepted, easy-to-reproduce procedure for the treatment of several painful degenerative conditions of the wrist, when capitate pole and radius lunate fossa are preserved. It has been reported to relieve pain and preserve a substantial wrist range of motion, although a partial loss of strength has to be expected because of the decreased length of the carpus. Since 2010, a new technique has been described in the literature using the resurfacing capitate pyrocarbon implant, combined with PRC. This implant has been designed to perform PRC even in the presence of degenerate joint surfaces, and thus resolves the limited indications of this procedure; however, if a resection of the capitate pole is performed to set up the implant, similar to PRC it may not positively influence the recovery of strength. The authors propose an resurfacing capitate pyrocarbon implant technique without any capitate bone resection, to preserve as much as possible the carpus length and so to improve the functional recovery. The surgical technique, is described in detail and preliminary results are discussed.


Asunto(s)
Artritis , Hueso Grande del Carpo , Huesos del Carpo , Hueso Grande del Carpo/cirugía , Carbono , Humanos , Rango del Movimiento Articular , Muñeca , Articulación de la Muñeca/cirugía
11.
Eur J Orthop Surg Traumatol ; 31(3): 579-585, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33068166

RESUMEN

The entrapment of the ulnar nerve in Guyon's canal (GC) is a well-known wrist canalicular syndrome which is usually followed by a gradual combination of both sensitive and motor symptomatology. However, GC nerve compression could also cause a pure hand motor dysfunction. This condition, less frequent than the classic Guyon's syndrome, can be difficult to diagnose. Authors report a case series of eight patients affected by isolated compression of the ulnar nerve motor branch, due to piso-triquetrum or triquetro-hamate joint ganglia. Surgical technique and postoperative outcomes are discussed in this paper. The isolated compression of the ulnar nerve motor branch is a very rare clinical condition which is often linked to several causes. The rarity of the pathology is probably due to lack of knowledge and therefore to the difficulty in formulating a correct diagnosis. Surgical treatment appears to be decisive in most cases, although late diagnosis often leads to incomplete functional recovery.


Asunto(s)
Articulaciones del Carpo , Síndromes de Compresión del Nervio Cubital , Ganglios , Humanos , Nervio Cubital , Síndromes de Compresión del Nervio Cubital/diagnóstico por imagen , Síndromes de Compresión del Nervio Cubital/etiología , Síndromes de Compresión del Nervio Cubital/cirugía , Muñeca/cirugía , Articulación de la Muñeca/diagnóstico por imagen , Articulación de la Muñeca/cirugía
12.
Tech Hand Up Extrem Surg ; 25(2): 77-83, 2020 Jul 29.
Artículo en Inglés | MEDLINE | ID: mdl-32740056

RESUMEN

Thumb basal joint arthritis treatment with biological arthroplasty is a widely used procedure in hand surgery centers. The several described techniques are based on the use of different tendons of the wrist, implying frequently a tenoplasty around flexor carpi radialis or transosseous tunnels to stabilize the articulation. The authors have been using, for many years, the technique conceived by F. Brunelli that relies on the anchorage of the volar band of the abductor pollicis longus tendon to the first intermetacarpal ligament, to obtain a suspension arthroplasty. Technical details are discussed. Sixty-seven patients in Eaton-Littler stage 2 or 3 with >4 years follow-up after surgery were evaluated. Each patient expressed a subjective evaluation relating to pain, functionality, strength, esthetic aspect, and general satisfaction. The following parameters have been considered as objective data: the angle of the first web space, the abduction and opposition of the first digit, the pinch, and the strength. X-rays were also performed to verify the distance between the scaphoid and the first metacarpal. In 84% of cases, a significant improvement was found in the considered parameters. Joint space was maintained in 76% of cases at radiologic follow-up. No patient needed surgical revision. The tenoplasty conceived by F. Brunelli presents several advantages, including the simple and reproducible execution, short surgical time, and comfortable postoperative course for the patient. After mid-term follow-up, authors believe this procedure is particularly respectful of the anatomy and physiology of the first ray and gives optimal results in most of the cases, but, in patients with severe subluxation of the 1st metacarpal (identifiable as Eaton-Littler stage 3), it is less reliable, because of the degeneration of the intermetacarpal ligament.


Asunto(s)
Articulaciones Carpometacarpianas , Osteoartritis , Artroplastia , Articulaciones Carpometacarpianas/cirugía , Estudios de Seguimiento , Humanos , Osteoartritis/cirugía , Tendones/cirugía , Pulgar/cirugía
13.
Tech Hand Up Extrem Surg ; 23(3): 146-150, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31033781

RESUMEN

About 10% of patients with lateral epicondylitis are nonresponsive to conservative treatment; as controversy persists on etiology and pathogenesis of this pathology, there is no surgical technique universally approved. The purpose of this study is to describe and evaluate the clinical outcomes of our technique consisting in a semicircumferential and partial detachment of the entire extensor apparatus enthesis. The technique was performed on 14 consecutive patients affected by painful chronic epicondylitis between January 2010 and April 2016. Two patients were lost during follow-up. At 6 months, 1 year, and 2 years after surgery patients were revaluated. Outcomes were assessed using Visual Analog Scale, DASH score (Disability of the Arm, Shoulder, and Hand), Jamar test, and time to return to work. The mean surgical time was 16 minutes. The postoperative outcomes were excellent in most patients as mean Visual Analog Scale score improved from 9.25 to 2.6 and mean DASH score improved from 82.9 to 29.6. No recurrence was recorded at 2 years of follow-up. The procedure is rapid to perform, reproducible and provides low complication rates and no relapse in our experience. As a result, we recommend this technique in nonresponding to conservative treatment lateral epicondylitis.


Asunto(s)
Músculo Esquelético/cirugía , Codo de Tenista/cirugía , Adulto , Evaluación de la Discapacidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Tempo Operativo , Estudios Prospectivos , Escala Visual Analógica
14.
Tech Hand Up Extrem Surg ; 23(3): 115-121, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-30640812

RESUMEN

OBJECTIVES: We retrospectively reviewed 1305 open-surgery for idiopathic trigger finger performed by 4 senior hand surgeons between 2014 and 2016. MATERIAL AND METHODS: Medical records and a telephone interview made with a minimum follow-up of 1 year were used to identify the recurrent rate of triggering and other complications. RESULTS: This retrospective study let us note that 169 fingers (13%) required simultaneous release of the A1-A2 pulleys because the sectioning of the A1 pulley alone did not lead to complete free sliding of the tendons. We did not record any bowstring complication and we ascribe this to both surgery and bandaging technique. Overall rate of complication was 11.8% and relapse triggering or permanent proximal interphalangeal joint flexion (PPIJF) were among them; notably, however, they occurred only in patients where the A2 pulley was not sectioned. CONCLUSIONS: Is possible to reduce the percentage of relapse triggering or PPIJF after trigger finger surgery, by performing that combined A1-A2 pulley release. LEVEL OF EVIDENCE: Level III.


Asunto(s)
Procedimientos Ortopédicos/métodos , Trastorno del Dedo en Gatillo/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Recurrencia , Estudios Retrospectivos , Adulto Joven
15.
Tech Hand Up Extrem Surg ; 22(3): 104-109, 2018 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-29889155

RESUMEN

OBJECTIVES: The aim of our study was to assess the results of antegrade percutaneous intramedullary Kirschner wire (K-wire) fixation, for the treatment of unstable displaced metacarpal fractures in a large number of cases, in order to support the usage of this mini-invasive technique in the largest variety of fractures as possible. MATERIAL AND METHODS: Every patient meeting the inclusion criteria was treated with closed reduction and antegrade intramedullary fixation with 1 or 2 K-wire from January 2013. A total of 150 patients with 165 metacarpal fractures were evaluated until February 2016. Average follow-up duration was 10 weeks. The clinical outcome was assessed by the total active motion of the digit, presence of rotational deformity, Quick Disabilities of the Arm, Shoulder, and Hand (Q-DASH) score, and Patient-Rated Wrist/Hand Evaluation (PRWHE) score. The radiographic outcome was assessed by evaluating the dorsal angulation and shortening of the metacarpal, comparing the postoperative radiography and the first radiography showing fracture healing. RESULTS: Comparing the injured and contralateral digit average total active motion after 10 weeks from surgery, no statistical significance emerged. No patient developed extensor tendon irritation, so that there was no need to perform tenolysis, ever. The average Quick Disabilities of the Arm, Shoulder, and Hand score was 12.3 (range, 0 to 37). The average Patient-Rated Wrist/Hand Evaluation score was 19 (range, 0 to 41). Fracture union was steadily achieved. Radiographic assessment showed a nonsignificant postoperative loss of reduction. CONCLUSIONS: Antegrade intramedullary K-wire fixation technique is valid, reproducible, cheap, and perfectly suited to the treatment of metacarpal fractures requiring surgery, providing immediate mobilization and excellent outcomes for a very wide variety of fractures.


Asunto(s)
Hilos Ortopédicos , Fijación Intramedular de Fracturas/métodos , Fracturas Óseas/cirugía , Huesos del Metacarpo/cirugía , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Evaluación de la Discapacidad , Femenino , Curación de Fractura , Humanos , Masculino , Huesos del Metacarpo/lesiones , Persona de Mediana Edad , Estudios Prospectivos , Rango del Movimiento Articular , Adulto Joven
16.
J Mater Sci Mater Med ; 27(3): 50, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26758897

RESUMEN

Application of carbon-fiber-reinforced-polymer (CFRP) artifacts in humans has been promoted in Orthopedic and Trauma Surgery. Literature documents the biocompatibility of materials used, namely carbon fibers (CF) and poly-ether thermoplastics, like poly-ether-ether-ketone (PEEK). A properly designed and accurately implanted composite artifact should not expose its fibers during or after surgery: however this may happen. A white Caucasian woman came to our attention 11 months after surgery for a wrist fracture. She had a severe impairment, being unable to flex the thumb; index finger and distal phalanx of third finger. We retrieved a correctly positioned plate and documented an aggressive erosive flexor tendons synovitis with eroded stumps of flexor tendons. The plate and soft tissues were analyzed by Visible Light and Scanning Electron Microscopy. Histopathology showed granulomatous fibrogenic process with CF engulfed inside multinucleated giant cells. Fibers were unmasked and disrupted inside the holes where screws were tightened and corrugation of the polymer coating led to further unmasking. The mechanism of foreign-body reaction to CF has not been studied in depth yet, particularly at the ultrastructural level and in Humans. This case documents a damage occurred in a clinical application and which was theoretically possible. Our opinion is that a proper way to promote the use of CRFP in the Clinic in the short term is to direct Research towards finding a better way to prevent CF debris to be exposed and released. In the longer term, the biological response to CF deserves a deeper understanding.


Asunto(s)
Placas Óseas/efectos adversos , Carbono/efectos adversos , Plásticos/efectos adversos , Sinovitis/etiología , Adulto , Anciano , Materiales Biocompatibles , Fibra de Carbono , Femenino , Humanos , Microscopía Electrónica de Rastreo , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/patología , Propiedades de Superficie , Sinovitis/patología
17.
Cell Mol Life Sci ; 72(11): 2107-17, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25681866

RESUMEN

Levodopa-induced dyskinesias (LIDs) occur in the majority of patients with Parkinson's disease (PD) following years of levodopa treatment. The pathophysiology underlying LIDs in PD is poorly understood, and current treatments generate only minor benefits for the patients. Studies with positron emission tomography (PET) molecular imaging have demonstrated that in advanced PD patients, levodopa administration induces sharp increases in striatal dopamine levels, which correlate with LIDs severity. Fluctuations in striatal dopamine levels could be the result of the attenuated buffering ability in the dopaminergically denervated striatum. Lines of evidence from PET studies indicate that serotonergic terminals could also be responsible for the development of LIDs in PD by aberrantly processing exogenous levodopa and by releasing dopamine in a dysregulated manner from the serotonergic terminals. Additionally, other downstream mechanisms involving glutamatergic, cannabinoid, opioid, cholinergic, adenosinergic, and noradrenergic systems may contribute in the development of LIDs. In this article, we review the findings from preclinical, clinical, and molecular imaging studies, which have contributed to our understanding the pathophysiology of LIDs in PD.


Asunto(s)
Antiparkinsonianos/efectos adversos , Discinesia Inducida por Medicamentos/patología , Levodopa/efectos adversos , Antiparkinsonianos/uso terapéutico , Dopamina/metabolismo , Dopaminérgicos/efectos adversos , Dopaminérgicos/uso terapéutico , Humanos , Levodopa/uso terapéutico , Imagen Molecular , Enfermedad de Parkinson/tratamiento farmacológico , Receptores Dopaminérgicos/metabolismo
18.
J Appl Biomater Funct Mater ; 13(1): 61-5, 2015 Mar 18.
Artículo en Inglés | MEDLINE | ID: mdl-24744230

RESUMEN

PURPOSE: Nerve gap injuries may be associated with lesions in other structures, like tendons or bones; in these cases, it is common to plan a second surgery to improve functional recovery. Since macroscopic observations of nerve regeneration in humans are rare, we exploited these second surgeries for the purpose of studying nerve regeneration in humans. METHODS: We assessed the clinical outcomes of 50 implants of collagen-based nerve guides in the upper limb. We performed a second look at 20, assessing macroscopically both nerve regeneration and collagen degradation. RESULTS AND CONCLUSIONS: Pain was never recorded in these patients. An adequate sensory recovery took place whenever nerve regeneration was found inside the guide. Motor recovery seemed to occur only when the gap lesion was shorter than 10 mm. The degree of degradation appeared to be variable and was not directly correlated with time; we hypothesize that it could be associated with the site of implantation. Such a large number of second looks in humans has never been previously reported in the literature.


Asunto(s)
Colágeno/administración & dosificación , Regeneración Tisular Dirigida/métodos , Regeneración Nerviosa , Traumatismos de los Nervios Periféricos/cirugía , Nervios Periféricos , Recuperación de la Función , Extremidad Superior , Femenino , Humanos , Masculino , Traumatismos de los Nervios Periféricos/patología , Nervios Periféricos/fisiología , Nervios Periféricos/cirugía , Extremidad Superior/lesiones , Extremidad Superior/inervación , Extremidad Superior/patología , Extremidad Superior/cirugía
20.
Artículo en Inglés | MEDLINE | ID: mdl-18791910

RESUMEN

Our aim was to compare two methods of treatment of ganglia on the volar aspect of the wrist (the open excision done through a longitudinal volar skin incision and the arthroscopic resection through two or three dorsal ports), to see if arthroscopy could reduce the risks of operating in this area and the time to healing. Twenty radiocarpal and five midcarpal volar ganglia were operated on by open approach and an equivalent group was treated by arthroscopy. Fifteen radiocarpal and five midcarpal ganglia were treated with good results in the open group and 18 radiocarpal and one midcarpal ganglia in the arthroscopic group (no visible or palpable ganglion, a full range of active wrist movement, grip strength equal to preoperatively, no pain, and a cosmetically acceptable scar). In the open group there were four injuries to a branch of the radial artery, two cases of partial stiffness of the wrist associated with a painful scar, one case of neuropraxia, and one recurrence (all of which were among the 20 radiocarpal ganglia). In the arthroscopic group there was one case of neuropraxia, one injury to a branch of the radial artery, and three recurrences (three of the complications were among the five midcarpal ganglia). The mean functional recovery time was equal to 15 (6) days in the open group and 6 (2) days in the arthroscopic group. The mean time lost from work was equal to 23 (11) days in the open group and 10 (5) days in the arthroscopic group. Our results suggest that arthroscopic resection is a reasonable alternative to open excision in treating radiocarpal volar ganglia because it has less postoperative morbidity and a better cosmetic result. Midcarpal volar ganglia, however, should still be treated by open operation.


Asunto(s)
Artroscopía , Quiste Sinovial/cirugía , Articulación de la Muñeca/cirugía , Adolescente , Adulto , Artroscopía/métodos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven
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