کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
875671 910794 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of a non-invasive diagnostic technique for acetabular component loosening in total hip replacements
ترجمه فارسی عنوان
توسعه تکنیک تشخیص غیر تهاجمی برای از بین بردن جزء استابولوم در کل مفصل گردن
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
چکیده انگلیسی


• Vibration analysis can detect acetabular component loosening.
• Vibration analysis was successful with both ultrasound and an accelerometer.
• The accelerometer can detect loosening over a wider frequency range.
• The harmonic ratio was successfully used to determine the loosening.

Current techniques for diagnosing early loosening of a total hip replacement (THR) are ineffective, especially for the acetabular component. Accordingly, new, accurate, and quantifiable methods are required. The aim of this study was to investigate the viability of vibrational analysis for accurately detecting acetabular component loosening.A simplified acetabular model was constructed using a Sawbones® foam block. By placing a thin silicone layer between the acetabular component and the Sawbones block, 2- and 4-mm soft tissue membranes were simulated representing different loosening scenarios. A constant amplitude sinusoidal excitation with a sweep range of 100–1500 Hz was used. Output vibration from the model was measured using an accelerometer and an ultrasound probe. Loosening was determined from output signal features such as the number and relative strength of observed harmonic frequencies.Both measurement methods were sufficient to measure the output vibration. Vibrational analysis reliably detected loosening corresponding to both 2 and 4 mm tissue membranes at driving frequencies between 100 and 1000 Hz (p < 0.01) using the accelerometer. In contrast, ultrasound detected 2-mm loosening at a frequency range of 850–1050 Hz (p < 0.01) and 4-mm loosening at 500–950 Hz (p < 0.01).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Medical Engineering & Physics - Volume 37, Issue 8, August 2015, Pages 739–745
نویسندگان
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