Publications by authors named "Luis Renato Nakachima"
Article Synopsis
- Congenital Anomalies of the Upper Limb (CAUL) refer to structural or functional abnormalities that occur during fetal development, potentially resulting in limb dysfunction.
- A study conducted in Brazil from 2010 to 2019 found that supernumerary fingers were the most common CAUL, affecting 11,708 live births, with increased prevalence in mothers over 40 and a higher likelihood in newborns weighing less than 2,500 grams.
- The research highlights a rising trend in CAUL cases, emphasizing the need for health agencies to focus on understanding its prevalence and associated risk factors for improved preventive measures.
Distal Radial Fractures with Scaphoid Fractures.
Rev Bras Ortop (Sao Paulo)
April 2024
This study evaluated the epidemiological data and functional outcomes from patients with concomitant distal radial and scaphoid fractures treated in a single center specialized in hand surgery. Functional outcomes analysis used validated instruments. Patients diagnosed with distal radial and scaphoid fractures treated from January 2011 to December 2021 underwent assessments using the Disabilities of the Arm, Shoulder and Hand (DASH), Patient-Rated Wrist Evaluation (PRWE), Visual Analog Scale (VAS) for pain, goniometry, radiographic consolidation, and complications six months after surgery.
View Article and Find Full Text PDFThe objective of the study was to determine the prevalence of absence of palmaris longus tendon in a population sample from a multiethnic Brazilian city. A cross-sectional observational study was carried out between October 2017 and April 2018. We included male and female volunteers aged 18 years or older.
View Article and Find Full Text PDFThe main purpose of this research was to do an intraindividual comparison of outcomes between the open ulnar incision (OUI) and the Paine retinaculotome with palmar incision (PRWPI) techniques in patients with bilateral carpal tunnel syndrome (CTS). The patients underwent OUI surgery on one hand and PRWPI surgery on the contralateral hand. The patients were evaluated with the Boston carpal tunnel questionnaire, visual analogue scale for pain, palmar grip strength, and fingertip, key, and tripod pinch strengths.
View Article and Find Full Text PDFArticle Synopsis
- Carpal tunnel syndrome (CTS) lacks standardized diagnostic criteria, making it hard to establish effective care protocols and compare clinical research findings.
- A systematic review identified key diagnostic criteria and outcome measures used in randomized clinical trials (RCTs) on CTS, focusing on studies from 2006 to 2019.
- The findings revealed that while symptoms like paresthesia are common diagnostic criteria, there is significant heterogeneity across studies, with the Boston Questionnaire being the most utilized tool for outcome measurement.
Article Synopsis
- The study assessed the effectiveness of hypertonic saline as a treatment for dorsal synovial cysts in the wrist.
- 50 patients were treated with hypertonic saline after cyst aspiration and followed for 24 weeks to measure outcomes like pain, strength, and recurrence.
- Results showed that 39.1% of cysts resolved, while 60.9% recurred, with complications like pain and edema noted but no significant changes in strength or motion.
Background: Carpal tunnel syndrome (CTS) is a common condition greatly affects patients' quality of life and ability to work. Systematic reviews provide useful information for treatment and health decisions.
Objective: This study aimed to assess the methodological quality of previously published systematic reviews on the treatment of CTS.
Purpose: Various postoperative protocols have been proposed to improve outcomes and accelerate nerve regeneration. Recently, the use of physical exercise in a post-surgical neurorraphy procedure has shown good results when started early. We experimentally investigated the hypothesis that post-operative exercise speeds up results and improves clinical and morphologic parameters.
View Article and Find Full Text PDFArticle Synopsis
- Distal radial fractures are common and can lead to issues like wrist pain and limited movement due to vicious consolidation in about one third of cases.
- Corrective osteotomy is the main treatment, but itrequires detailed preoperative planning because of its complexity, especially when joints are involved.
- Recent advancements using 3D reconstruction from CT scans help create anatomical models for better understanding and planning of the surgery, making procedures safer and more efficient; this study highlights the technique's application in two clinical cases.
Article Synopsis
- Ulnar nerve mononeuropathy can be hard to diagnose, particularly when caused by rare factors like repetitive trauma from cycling.
- Two patients with handlebar syndrome (ulnar nerve palsy at Guyon's canal) experienced symptoms after cycling, one needing surgery and the other receiving conservative treatment.
- Handlebar syndrome is linked to repetitive compression of the ulnar nerve due to cycling, and with cycling's growing popularity, avoiding such trauma is crucial, with surgery considered only if conservative methods fail.
Prevalence of Absence of Function of the Flexor Digitorum Superficialis Muscle Tendons in the Fourth and Fifth Fingers of the Hand in the Brazilian Population.
Rev Bras Ortop (Sao Paulo)
August 2020
To evaluate the prevalence of absence of flexor digitorum superficialis muscle tendons function of the fourth and fifth fingers of the hand in the Brazilian population Prospective study performed at the orthopedics and traumatology department of a university hospital. The study was conducted from October 2017 to April 2018. The sample consisted of volunteers with no history of upper limb trauma, surgery or any other condition.
View Article and Find Full Text PDFAssessment of the Effects of Swimming as a Postoperative Rehabilitation on Nerve Regeneration of Wistar Rats Submitted to Grafting of Autologous Nerves after Injury to the Sciatic Nerve.
Rev Bras Ortop (Sao Paulo)
June 2020
To evaluate the effects of swimming on nerve regeneration after sciatic nerve injury in Wistar rats. A total of 30 Wistar rats was divided into 3 groups: Sham + Nat group animals that were not submitted to graft surgery and were submitted to swimming ( = 10); Graft group: animals submitted to autologous sciatic nerve graft ( = 10); and Graft + Nat group: animals submitted to autologous sciatic nerve graft surgery and to swimming ( = 10). The results were analyzed on the software (GraphPad Software, San Diego, CA, USA).
View Article and Find Full Text PDFArticle Synopsis
- A cross-sectional study in Brazil assessed the prevalence of the Linburg-Comstock anomaly in 1,008 volunteers aged 18 and older, finding a prevalence rate of 55.95%.
- The anomaly was often bilateral (53.2%), with a higher occurrence on the right side, particularly in men, while women reported more pain related to the condition.
- The findings highlight the need for further research into the Linburg-Comstock anomaly and its associated conditions, especially considering the notable gender differences in pain prevalence.
This study evaluates the conditions for microvascular procedures found by hand surgeons in Brazilian clinical practices. A prospective, observational, and analytical primary clinical research conducted during the 37 Brazilian Congress of Hand Surgery, from March 30 to April 1 , 2017, in Belo Horizonte, in which physicians answered 12 closed, objective, multiple-choice questions regarding their geographic region, type of institution (public or private), microsurgical training, time of experience, technical conditions, the availability of a standby team for emergencies and compensation. The study analyzed 143 hand surgeons; among them, 65.
View Article and Find Full Text PDFObjective: The authors performed an intra-individual comparison of surgical results between the open and endoscopic surgical techniques in patients with bilateral carpal tunnel syndrome. Each hand was submitted to surgery using one of these techniques.
Methods: Fifteen patients (30 hands) were evaluated by the Boston Questionnaire, visual analogue pain scale, palmar grip strength, and for tip, key, and tripod pinch strengths.
Background: Carpal tunnel syndrome (CTS) is the most commonly diagnosed and treated entrapment neuropathy. There is no consensus regarding the optimal technique for carpal tunnel release. The objective of this study is to demonstrate the surgical treatment of CTS by a small palmar incision and utilization of Paine retinaculotome to divide the transverse carpal ligament.
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