Utjecaj konstrukcijskog rješenja vanjskog fiksatora na stabilnost cijeljenja koštanog prijeloma

undergraduate thesis

• Title (english): External fixator design influence on stability of bone fracture healing
• Author: Magdalena Mijatović
• Mentor: Aleksandar Sušić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2021-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Primarna svrha ovog završnog rada je istraživanje utjecaja tehničkih i funkcionalnih karakteristika vanjskoga fiksatora zajedno s postupcima koji obuhvaćaju njegovu primjenu na uvjetovanu stabilnost konstrukcije i područja koštanog prijeloma. Kako bi se ona ispunila, potrebno je obuhvatiti zadano područje ortopedske kirurgije te iznijeti značajne podatke, strukturirano i selektivno u odnosu na dostupnu literaturu. Cilj je slijedom realiziran definiranjem medicinske terminologije, povijesnih činjenica, načela i (kontra)indikacija metode vanjske fiksacije, klasificiranjem fiksatora te isticanjem njihovih značajki i materijala uz provedenu usporedbu modela i odabir optimalnog rješenja u skladu s postojećom literaturom. Na koncu je provedena ergonomijska analiza podjelom na analizu konstrukcijskih čimbenika i analizu čimbenika ljudske greške odnosno procesa koje obuhvaća postavljanje fiksatora. Evaluacija metode je pokazala da je izvor učestalih komplikacija kontaktna površina kosti i pinova usprkos tome što u dostupnim istraživanjima uglavnom nisu prisutne informacije o uzrocima negativnih ishoda. Nadalje, zaključeno je da manjkavost konstrukcije glede niti jednog od predstavljenih čimbenika, kako od pinova i konfiguracije tako do bušenja kosti i zatezanja žica, neće zadovoljiti stabilnost kojom je uvjetovan proces cijeljenja iako se pinovi uzimaju za ključne konstrukcijske elemente. Shodno tome, a i drugim spoznajama, može se izvesti preporuka da se prilikom konstruiranja fiksatora, u svrhu usavršavanja ovog pristupa zbrinjavanja koštanih prijeloma, središnji konstrukcijski zahtjevi postavljaju na pinove i materijal izrade koji će osigurati povoljno biološko okruženje za kost i biti nositelj primjerenih mehaničkih svojstava uz moguću preradu i ponovnu upotrebu.

Abstract (english)

The primary purpose of this bachelor thesis is to investigate the effects of technical and functional characteristics of external fixator along with procedures that comprise its application on conditional stability of design and bone defect site. In order to do so, it is essential to include the default field of orthopaedic surgery and outline significant data, structured and selectively with regard to available literature. The aim was achieved consecutively by defining medical terminology, historical facts, principles and (contra)indications of external fixation, classification of fixators and emphasizing their features and materials along with conducted comparison of models and selection of optimal design according to existing literature. Finally, an ergonomic analysis was conducted by dividing it on analysis of design factors and analysis of human factor or processes that the application of fixator includes. Evaluation of the method demonstrated that the source of frequent complications is pin-bone interface despite the fact that the available literature mostly did not include information on the causes of negative outcomes. Furthermore, it was concluded that imperfection of the design regarding any of the presented factors, from pins and configuration to bone drilling and wire tensioning, will not satisfy stability conditioned by the process of healing even though pins are considered as crucial structural elements. According to that, and other premises, it is recommended that when designing a fixator, in order to improve this method of bone fractures treatment, vital design requirements are set upon pins and their material that will provide a convenient biological environment for bone and be an adequate mechanical properties carrier along with eventual suggestion of reprocessing and reuse.

• Keywords: vanjski fiksator; cijeljenje prijeloma; konstruiranje; ergonomija
• Keywords (english): external fixator; bone healing; designing; ergonomics
• Language: croatian
• URN:NBN: urn:nbn:hr:235:103570
• Study programme: Title: Mechanical Engineering; specializations in: Design, Process and Energy Engineering, Production Engineering, Engineering Modelling and Computer Simulation, Marine Engineering, Industrial Engineering and Management, Materials Engineering; Course: Design; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-09-23 08:55:08