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The development and clinical application of acoustical technique in hip joint

  • Huang Xiaolin 
  • Kwong Kevin 
  • Cheng Jack 
Article

Summary

A non-invasive acoustical system was developed for the measurement of transmission properties of acoustic waves in the hip joints. The instrumentation consisted of three sub-systems. An excitation system employed a vibratory force at the sacrum of the test subjects. A transduction system included a pair of identical microphones installed in the tubes of two stethoscopes, which were placed at the greater trochanters on both sides for picking up the acoustical signals transmitted across the hip joints. The data acquisition and analysis system was a portable signal analyzer with a program of dual channel digital filter for measuring the power of acoustical signal in 1/3-octave frequency bands. 27 normal adults, 20 normal pre-school children and 40 normal neonates were randomly selected for testing. Coherence function (CF) and discrepancy (D) was measured during the testing. Results from the three groups showed that there was a high coherence of the signals (CF>0.9) and a small discrepancy (D<3 dB) between bilateral hips in the frequency range of 200–315 Hz. For normal neonates, there was a wider frequency range of 160–315 Hz in which the acoustical signals maintained a high coherence (CF>0.93) and a smaller discrepancy (D<2 dB) was observed. This study showed that the development of the acoustical technique provided a practical method with objective parameters. The results obtained in this study can offer a baseline for further investigation of hip disorders particularly those related to structural abnormalities of the hip.

Key words

hip joint acoustical technique digital filter 

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References

  1. 1.
    Mollan R A B, McCullagh G C, Wilson A. Critical appraisal of auscultation of human joints. Clin Orthop Related Research, 1982,170:231Google Scholar
  2. 2.
    Kernohan W G, Beverland D E, McCoy G Fet al. The diagnostic potential of vibration arthrography. Clin Orthop Related Research, 1986,210:106Google Scholar
  3. 3.
    Richardson J B, Foo C K, Stone M Het al. Attenuation of sound transmission in congenital dislocation of the hip. J Bone Joint Surg, 1987,69(B):850Google Scholar
  4. 4.
    Stone M H, Richardson J B, Bennet G C. Another clinical test for congenital dislocation of the hip. Lancet, 1987,8359:954CrossRefGoogle Scholar
  5. 5.
    File P, Wood J P, Kreplick L W. Diagnosis of hip fracture by the auscultatory percussion technique. Am J Emerg Med, 1998,16(2):73CrossRefGoogle Scholar
  6. 6.
    Siffert R S, Kaufman J J. Acoustic assessment of fracture healing. Capabilities and limitations of “a lost art”. Am J Orthop, 1996,25(9):614PubMedGoogle Scholar
  7. 7.
    Peylan A. Direct auscultation of the joint. Rheumatism, 1953,9:77PubMedGoogle Scholar
  8. 8.
    Saha S, Lakes R S. The effect of soft tissue on wave propagation and vibration tests for determining the in vivo properties of bone. J Biomech, 1977,10:393PubMedCrossRefGoogle Scholar

Copyright information

© Springer 2002

Authors and Affiliations

  • Huang Xiaolin 
    • 1
  • Kwong Kevin 
    • 2
  • Cheng Jack 
    • 3
  1. 1.Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan
  2. 2.Department of Rehabilitation SciencesThe Hong Kong Polytechnic UniversityChina
  3. 3.Department of Orthopaedics and TraumatologyThe Chinese University of Hong KongChina

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