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Carpometacarpal subchondral cysts due to repetitive movements in shoemaker: A case report

100%
Tonini S., Candura S. M., Lanfranco A., Mennoia N. V.
International Journal of Occupational Medicine and Environmental Health
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2011
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vol. 24
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issue 4
414-417
EN
Objectives: Subchondral carpometacarpal cysts are classic and almost pathognomonic lesions found in workers using vibrating instruments over prolonged periods of time. Materials and Methods: We present the case of a 53-year-old woman who worked for 30 years sewing shoe uppers, a task which required grasping fi rmly a pear-shaped handle awl and pushing it through the leather upper and the sole of the shoe, with combined fl exion and supination movement of the wrist. After approximately 20 years of working, the patient noted gradual onset of paresthesias in the dominant (right) hand, with increasing diffi culty in grasping the awl. Subsequent diagnosis of carpal tunnel syndrome was confi rmed by electrophysiologic testing and its surgical release was performed. Nevertheless, hand pain, paresthesias and weakness persisted. Results: Ultrasound of the snuffbox tendons excluded DeQuervain tenosynovitis. Radiographic imaging of the symptomatic hand showed carpometacarpal subchondral cystic formations. Conclusions: In addition to demonstrating the usefulness of radiographic imaging in patients with persistent hand pain post-carpal release, this case is important in illustrating that repetitive movements with high pressure over the palmar carpal area may cause bone cysts, even if the subjects do not use vibrating tools.
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The prevalence and risk factors of musculoskeletal disorders in the hands of fishermen working as oyster shuckers

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Park J. S., Yoo J.-I., Na J.-B., Song H. S.
International Journal of Occupational Medicine and Environmental Health
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2021
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vol. 34
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issue 5
603-615
EN
ObjectivesThis study aimed to investigate the prevalence of musculoskeletal disorders in the hands and wrists of fishermen working as oyster shuckers, and to identify the risk factors associated with oyster shucking. Material and Methods A total of 590 fishery workers including those working as oyster shuckers in 2015–2017 were included in the study analysis. Hand osteoarthritis (OA), carpal tunnel syndrome (CTS), and ulnar impaction syndrome were diagnosed using X-ray, magnetic resonance imaging, and physical examinations according to each diagnostic criterion. The Rapid Entire Body Assessment was used as a measurement tool for analyzing the occupation-related burden factors.ResultsThe prevalence of hand OA, CTS, and ulnar impaction syndrome was higher in oyster shuckers than in aquaculture/offshore fishery workers. The prevalence of upper limb disease was higher in oyster shuckers than in other fishery workers, even in the prevalence of exposure to occupational burden factors. In oyster shuckers, the incidence of hand and wrist OA was 84%, that of CTS was 72%, and that of ulnar impaction syndrome was 41%. In addition, oyster shuckers were more likely to be exposed to occupational burden factors than were other types of fishermen. Conclusions The prevalence of hand OA, CTS, and ulnar impaction syndrome was higher in oyster shuckers. Therefore, proper stretching or exercises for rest and musculoskeletal relaxation, along with health-care education and promotion, will be needed for the fishermen’s repeated posture and impact work.
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Comparison of sense of wrist joint position between aikidokas and healthy people

63%
Sanati E., Kordi Y. A., asghar A. A., Parandavarfard S., Yazdani F.
Ido Movement for Culture. Journal of Martial Arts Anthropology
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2021
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vol. 21
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issue 1
38-46
EN
Background. Aikido is a Japanese martial art developed by Morihei Ueshiba. Aikido techniques include throwing, falls and joint locks. The wrist joint usually undergoes extreme ranges of flexion and extension in aikido. There is scant evidence about the correlation between proprioception and muscle strength in wrist joints. Problem and aim. The objective of this study was to compare wrist joint position sense (JPS) between aikidokas and healthy people and to evaluate the correlation between JPS and isokinetic strength of wrist muscles. Methods. Thirty one aikidokas and 31 healthy people participated in this cross-sectional study. Active and passive JPS were assessed at 35˚ and 60˚ of wrist flexion and extension in both hands. The isokinetic strength of wrist flexors and extensors was assessed at an angular velocity of 90˚/sec. Results. No significant difference was observed in wrist JPS between the groups. Average peak torque of wrist extension was significantly higher in aikidokas than the control group on the dominant side (P=0.03). Angle to peak torque was achieved sooner in aikidokas (P=0.01). Total work in extension (P=0.03) and average power of flexion (P=0.02) and extension (P=0.03) were significantly higher on the non-dominant side in aikidokas. No acceptable correlation was detected between JPS and isokinetic strength in aikidokas. Conclusions. Despite the overstraining applied to the wrist, JPS was not impaired in aikidokas. Although we did not observe an acceptable correlation between JPS and muscle strength in aikidokas, some factors like higher peak torque, total work, and power might have supported wrist complex and prevented proprioception impairment in aikidokas.
PL
Tło. Aikido to japońska sztuka walki stworzona przez Morihei Ueshibę. Techniki aikido obejmują rzuty, upadki i blokady stawów. W aikido staw nadgarstkowy zwykle ulega ekstremalnym zakresom zgięcia i wydłużenia. Nie ma wielu opracowań naukowych dostarczających dowodów na związek między proprioceptem a siłą mięśni w stawie nadgarstkowym. Problem i cel. Celem pracy było porównanie czucia pozycji stawu nadgarstka (JPS) u zawodników aikido i zdrowych osób oraz ocena korelacji między JPS a siłą izokinetyczną mięśni nadgarstka. Metody. W badaniu przekrojowym wzięło udział trzydzieści jeden aikidoków i 31 osób zdrowych. Aktywne i bierne JPS oceniano przy 35 ̊ i 60 ̊ zgięcia i rozciągnięciu nadgarstka po obu stronach. Wytrzymałość izokinetyczną zginaczy i ekstensorów nadgarstka oceniono przy prędkości kątowej 90 ̊/sec. Wyniki. Nie zaobserwowano istotnej różnicy w JPS nadgarstka między grupami. Średni szczytowy moment obrotowy rozciągnięcia nadgarstka był istotnie większy u zawodników aikido niż w grupie kontrolnej po stronie dominującej (P=0,03). U zawodników aikido kąt do punktu szczytowego momentu obrotowego osiągnięto wcześniej (P=0,01) niż w grupie kontrolnej (P=0,03). Całkowita praca w rozciągnięciu (P=0,03) oraz średnia siła zgięcia (P=0,02) i rozciągnięcia (P=0,03) były istotnie większe po stronie niedominującej u zawodników aikido. Nie stwierdzono dopuszczalnej korelacji pomiędzy JPS a siłą izokinetyczną u zawodników aikido. Wnioski. Pomimo nadmiernego obciążenia nadgarstka, JPS u zawodników aikido nie był zaburzony. Chociaż nie zaobserwowano akceptowalnej korelacji pomiędzy JPS a siłą mięśni u zawodników aikido, niektóre czynniki, takie jak większy szczytowy moment obrotowy, praca całkowita i siła mogły wspierać kompleks nadgarstka i zapobiegać zaburzeniom propriocepcji u zawodników aikido
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