撑杆
前臂
科莱斯骨折
医学
半径
材料科学
口腔正畸科
支撑
生物医学工程
外科
手腕
计算机科学
结构工程
工程类
计算机安全
作者
Douglas Wardlaw,Ann H. Murdoch
标识
DOI:10.1016/j.clinbiomech.2024.106181
摘要
Abstract
Background
Presently used Colles' fracture treatments have similar outcomes with significant complications. Previous studies of a dynamic functional fracture brace, achieving similar or better results had no significant complications. A novel brace design is described to achieve optimal patient outcomes. Methods
Patient forearm measurements combined with data from a previously tested brace provided parameters for a brace formed using computer assisted design. Fracture swelling was simulated using a 40 ml (ml) plastic water filled bag placed over the dorsum of the lower radius. The interface pressure between the brace, skin and bag were measured on twelve human volunteers, four with forearm measurements to fit each of small, medium and large brace sizes. Measurements were taken at intervals reducing volume of fluid in the bag by 10 ml until empty, first wearing a brace, and then with a Colles plaster of Paris cast. Findings
The brace produced interface pressures over the lower radius in the range of 62.5–90 (mm Hg) and when the bag was completely empty the pressure range was 43–83 mmHg. The initial interface pressures in the Colles casts were in the range of 15–18 mm of Mercury (mm Hg) and when 10 mls were removed from the plastic bag the interface pressure dropped immediately to almost zero. Interpretation
The brace measurements show pressures higher than a Colles cast which compensate for reduction of simulated swelling. It is safe and is potentially the optimal design to achieve significantly improved patient outcomes.
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