PMID- 9030475
OWN - NLM
STAT- MEDLINE
DCOM- 19970422
LR  - 20190831
IS  - 0171-967X (Print)
IS  - 0171-967X (Linking)
VI  - 60
IP  - 1
DP  - 1997 Jan
TI  - Ultrasound velocity and broadband attenuation as predictors of load-bearing 
      capacities of human calcanei.
PG  - 21-5
AB  - The main purpose of this study was to determine whether calcaneal ultrasound 
      parameters, measured in the mediolateral direction, reflect load-bearing 
      capacities of human calcanei. Broadband ultrasound attenuation (BUA) and 
      ultrasound velocity (UV) were measured in 20 cadaveric calcanei with a mean age 
      of 74.1 (SD 8.8). Normalized BUA (nBUA) was determined by dividing BUA by the 
      calcaneal thickness obtained using a pulse-echo technique. The bone mineral 
      density (BMD) of each calcaneus was measured by quantitative computed tomography. 
      The calcanei were embedded in PMMA to simulate the midstance physiologic 
      orientation during compressive testing in the load-bearing direction. The failure 
      load, stiffness, and energy absorption were determined for each calcaneus. It was 
      shown that BMD was well correlated with all ultrasound parameters (P < 0.0001). 
      BMD, BUA, nBUA, and UV were all significantly associated with calcaneal failure 
      load, stiffness, and energy absorption capacity (P < 0.05). nBUA was found to be 
      the strongest predictor of all compressive properties. BUA and BMD demonstrated 
      similar predictability of stiffness and energy absorption capacity, however, BUA 
      showed a more significant relationship to the failure load of the calcaneus than 
      did BMD. UV was found to be inferior to BMD, as well as BUA or nBUA, in assessing 
      failure load, stiffness, and energy absorption capacity. It was also shown that 
      nBUA was superior to BUA in the assessment of load-bearing capacity, but not in 
      the prediction of BMD. Multivariate regression analysis showed that the 
      combination of BUA or nBUA with UV did not improve the predictability of failure 
      load, stiffness, and energy absorption capacity over that of BUA or nBUA alone (P 
      > 0.5).
FAU - Han, S
AU  - Han S
AD  - Department of Orthopedic Surgery, University at Buffalo, Buffalo, New York 14214, 
      USA.
FAU - Medige, J
AU  - Medige J
FAU - Davis, J
AU  - Davis J
FAU - Fishkin, Z
AU  - Fishkin Z
FAU - Mihalko, W
AU  - Mihalko W
FAU - Ziv, I
AU  - Ziv I
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Calcif Tissue Int
JT  - Calcified tissue international
JID - 7905481
SB  - IM
MH  - Absorptiometry, Photon
MH  - Aged
MH  - Aged, 80 and over
MH  - Biomechanical Phenomena
MH  - *Bone Density
MH  - Calcaneus/diagnostic imaging/*physiology
MH  - Female
MH  - Humans
MH  - Male
MH  - Stress, Mechanical
MH  - Ultrasonography
EDAT- 1997/01/01 00:00
MHDA- 1997/01/01 00:01
CRDT- 1997/01/01 00:00
PHST- 1997/01/01 00:00 [pubmed]
PHST- 1997/01/01 00:01 [medline]
PHST- 1997/01/01 00:00 [entrez]
AID - 10.1007/s002239900180 [doi]
PST - ppublish
SO  - Calcif Tissue Int. 1997 Jan;60(1):21-5. doi: 10.1007/s002239900180.