Publications by authors named "Rames Mattar Junior"

Article Synopsis
  • The study addresses the challenge of hand reanimation for patients with total paralysis by comparing two surgical techniques: functional free gracilis muscle transfer and biceps tendon transfer to finger flexors.
  • Six patients were evaluated over an average follow-up of 7.5 years, with varying success rates based on the techniques used, as measured by the British Medical Research Council grading system.
  • The study concludes that while tendon transfer may be less complex and still effective, functional free muscle transfer is preferable when possible due to its potential for better long-term muscular strength in finger flexion.
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  • - The study investigates the influence of specific genetic variations (SNPs) in matrix metalloproteinase (MMP) genes on Dupuytren contracture (DC), a hand condition leading to finger deformity.
  • - Researchers analyzed samples from 60 DC patients and 100 control patients, finding significant differences in allele frequencies of three SNPs, suggesting they contribute to DC risk.
  • - The findings indicate that these genetic variations may serve as potential diagnostic and prognostic factors for Dupuytren contracture, highlighting their importance in understanding the condition.
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Introduction: The main innervation of the trapezius muscle is provided by the spinal accessory nerve. Several studies describe the contributions of cervical plexus roots to the trapezius muscle innervation, either directly or through connections with the spinal accessory nerve. There is no adequate understanding of how the trapezius muscle is affected after using the spinal accessory nerve in nerve transfer procedures with the usual technique, preserving at least 1 branch for the upper trapezius.

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Introduction: Scaphoid is the most fractured carpal bone, with a 5-10% nonunion rate. Treatment challenges include choosing the implant and graft that best corrects humpback deformity and carpal malalignment with higher chances of bony healing.

Objective: Compare cortico-cancellous and cancellous grafts between two groups of patients treating scaphoid nonunion with locking plates using autologous bone graft and evaluate bone healing rates and radiographic, tomographic, and functional parameters before and after surgery.

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Introduction: Scaphoid fractures represent 5-10% of nonunion rate and the treatment options consist of an open reduction with correction of deformity, restoration of the scaphoid length with autologous wedge grafting and fixation. However, there is still no consensus in the literature on the best fixation method. Therefore, the purpose of the study is to compare plate fixation and screw fixation in treating scaphoid nonunion with humpback deformity and carpal instability.

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The aim of this study was to compare semitendinosus transfer to distal femur (STTX) to semitendinosus surgical lengthening (STL) regarding the increase of anterior pelvic tilt after flexed knee gait treatment. Thirty-nine patients were evaluated, and they were divided according surgical procedures at knees: STL group (22 patients/44 knees), which included patients who received medial hamstrings surgical lengthening as part of multilevel approach, and STTX group (17 patients/34 knees), which was represented by patients who underwent orthopedic surgery including a STTX instead of STL. In the present study, the mean anterior pelvic tilt increased in all groups after treatment and STTX was not effective to prevent it in a medium-term follow-up.

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Article Synopsis
  • Early surgical intervention for traumatic rotator cuff tears is commonly recommended, but there has been little evidence to support this practice until now.
  • In a study involving rats with combined tendon tears, one group received early repair while another group had late repair, with tissues assessed 8 weeks post-surgery.
  • Results showed that early repairs led to significantly better biomechanical properties in the tissue, while the timing of the repair did not affect the bone structure of the humeral head.
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Purpose: Although a reasonable number of studies report satisfactory results with fibrin glue application in microvascular anastomosis since 1977, its utilization in the clinical setting has being scant in the literature. The aim of this study was to report the cumulated experience with the fibrin glue in free flaps over a period of 10 years, comparing the survival rate with the standard sutured anastomosis.

Patients And Methods: From August 2001 through November 2014, 83 consecutive free flaps were performed by a team of surgeons from two hospitals.

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The purpose of this report is to critically evaluate our results of two intercostal nerve transfers directly to the biceps motor branch in complete traumatic brachial plexus injuries. From January 2007 to November 2012, 19 patients were submitted to this type of surgery, but only 15 of them had a follow-up for ≥2 years and were included in this report. The mean interval from trauma to surgery was 6.

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Objective: To analyze the incidence of wrist ligament and cartilage associated fractures of the distal radius, through arthroscopy, correlating with AO/ASIF classification.

Methods: Thirty patients aged between 20 and 50 years old, with closed fracture from groups B and C according to AO/ASIF classification were selected. All of them were submitted to wrist arthroscopy to address intra-articular injuries and reduction and osteosynthesis of the fracture.

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The purpose of this study was to observe whether the results of the median nerve fascicle transfer to the biceps are equivalent to the classical ulnar nerve fascicle transfer, in terms of elbow flexion strength and donor nerve morbidity. Twenty-five consecutive patients were operated between March 2007 and July 2013. The patients were divided into two groups.

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Article Synopsis
  • - Brachial plexus injuries have evolved significantly in diagnosis and treatment since the aggressive approaches started in the 1950s, leading to better recovery options for patients.
  • - Recent advancements in microsurgical techniques, such as neurolysis and neurotization, have drastically improved surgical outcomes for those with these injuries.
  • - Enhanced imaging tools and electrical studies allow for quicker decision-making in treatment, contributing to better overall recovery and hope for patients suffering from brachial plexus injuries.
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Objectives: Retrospective evaluation of cases of limb replantation after avulsion injuries. Evaluation of the techniques and tactics used, that contributed to success and good functional results.

Methods: Forty-three patients' records were assessed.

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Objective: To compare the results from surgical treatment between volar plates with angular stability and orthogonal plates in unstable distal radius fractures, in patients aged over 60 years.

Methods: The patients were divided into two groups that were treated with volar plates or orthogonal plates. Clinical and radiographic results were analyzed prospectively.

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Objective: This is a clinical study of our experience using pedicle perforator flaps to cover skin defects in the middle and distal segment of the leg.

Design: Prospective study.

Setting: University hospital.

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Article Synopsis
  • The study aims to compare the effectiveness of flexor tendon tenolysis in zone 2 between two groups: one receiving intraoperative awakening with locoregional anesthesia and the other undergoing traditional general anesthesia.
  • A total of 22 patients with 39 affected fingers, who did not improve from rehabilitation, were assessed for active motion preoperatively and at 6 months post-surgery.
  • Results showed that while both methods yielded good outcomes, patients treated with the intraoperative awakening technique had significantly better total active motion after six months compared to those who underwent traditional anesthesia.
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Background: Since the first experiments with fibrin glue application in microvascular anastomoses in 1977, several studies have reported its benefits on suture reduction and anastomosis decreased time. In spite of that, clinical experience has been limited to two neurosurgical and two replantation case series, all of them with good results. This study was conducted to evaluate the feasibility and the potential benefits of fibrin glue application in free flaps.

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Objective: To compare skin folds in the dominant and nondominant halves of the body in a group (A) of 20 individuals with cerebral palsy and spastic hemiplegia and a group (B) of 30 normal volunteers.

Method: Body mass, height and skin folds were measured, and the percentage of body fat was estimated by adipose tissue measurement and densitometry. The mean age in group (A) was 24.

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Background: Several studies have already reported the utilization of fibrin glue in microvascular anastomoses to minimize the number of sutures and to decrease the operative time. Despite the good results obtained in most of these experiments, its clinical application has not launched. The aim of this study was to clarify the controversies around the safeness of fibrin glue application in microvascular anastomoses, and also to demonstrate the potential benefits of fibrin glue application in a realistic free flap model.

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