Pub Date : 1995-04-07DOI: 10.1109/SBEC.1995.514427
G. Lynn, D. P. Mukherjee, R. N. Kruse, K. Sadasivan*, J. Albright
Femoral neck fractures have been difficult to treat with nonunion and avascular necrosis reported in 10% to 40% of cases. The hypothesis tested here was to determine whether a femoral neck fracture fixed with a 150/spl deg/ screw is more stable than that fixed with a 135/spl deg/ screw. The objectives were to measure axial stiffness, torsional stiffness, and failure strength of femoral neck fractures (Pauwels III). Also, CT derived bone mineral density (BMD in units of K/sub 2/KPO/sub 4/ mg/cc equivalent) was measured. The following results were obtained: 1) The 150/spl deg/ hip screw demonstrated greater axial stiffness, as well as a preferred mode of failure (impaction at the fracture site). This is less likely to lead to nonunion or avascular necrosis than is the shearing action at the fracture site with the 135/spl deg/ hip screw. 2) The 135/spl deg/ hip screw demonstrated greater resistance to rotation. 3) CT derived BMD did not correlate with either axial or torsional stiffness of intact or fixed bones.
{"title":"A biomechanical study of 150/spl deg/ vs. 135/spl deg/ hip screws in femoral neck fractures","authors":"G. Lynn, D. P. Mukherjee, R. N. Kruse, K. Sadasivan*, J. Albright","doi":"10.1109/SBEC.1995.514427","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514427","url":null,"abstract":"Femoral neck fractures have been difficult to treat with nonunion and avascular necrosis reported in 10% to 40% of cases. The hypothesis tested here was to determine whether a femoral neck fracture fixed with a 150/spl deg/ screw is more stable than that fixed with a 135/spl deg/ screw. The objectives were to measure axial stiffness, torsional stiffness, and failure strength of femoral neck fractures (Pauwels III). Also, CT derived bone mineral density (BMD in units of K/sub 2/KPO/sub 4/ mg/cc equivalent) was measured. The following results were obtained: 1) The 150/spl deg/ hip screw demonstrated greater axial stiffness, as well as a preferred mode of failure (impaction at the fracture site). This is less likely to lead to nonunion or avascular necrosis than is the shearing action at the fracture site with the 135/spl deg/ hip screw. 2) The 135/spl deg/ hip screw demonstrated greater resistance to rotation. 3) CT derived BMD did not correlate with either axial or torsional stiffness of intact or fixed bones.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116892610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-04-07DOI: 10.1109/SBEC.1995.514476
Armando Barreto, N. Chin, J. Andrian, J. Riley
A wavelet transformation is applied to electrocorticogram (ECoG) records from epileptic patients. The temporal sharpness associated with interictal spikes at different resolutions is observed and two ways for representing the multiresolution sharpness of the spikes are proposed.
{"title":"Multiresolution characterization of interictal epileptic spikes based on a wavelet transformation","authors":"Armando Barreto, N. Chin, J. Andrian, J. Riley","doi":"10.1109/SBEC.1995.514476","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514476","url":null,"abstract":"A wavelet transformation is applied to electrocorticogram (ECoG) records from epileptic patients. The temporal sharpness associated with interictal spikes at different resolutions is observed and two ways for representing the multiresolution sharpness of the spikes are proposed.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123551782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-04-07DOI: 10.1109/SBEC.1995.514490
A. Kumar, C. Jobe, S. Saha
Information regarding the instantaneous center of rotation for shoulder motion is important for the design of continuous passive motion (CPM) machines for the shoulders. In this study, we attempted to determine the locations of the instantaneous center of rotation for shoulder motion of the arm. Fourteen healthy adult subjects (age 18 to 30 years) participated in this study, five were females and the rest were males, The instantaneous center of rotation was computed for two different shoulder motions: (1) abduction motion in the sagittal plane and, (2) abduction motion in the coronal plane. The motion of the arm was monitored by a magnetic device (Polhemus). Our results showed that the location of the instantaneous center was much more proximal than the glenohumoral joint. It was located between 11 and 16 cm from the C/sub 7/ vertebra for the abduction in the coronal plane and this distance varied from 9 to 13 cm for the motion in sagittal plane.
{"title":"Location of the instantaneous center of rotation for shoulder motion","authors":"A. Kumar, C. Jobe, S. Saha","doi":"10.1109/SBEC.1995.514490","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514490","url":null,"abstract":"Information regarding the instantaneous center of rotation for shoulder motion is important for the design of continuous passive motion (CPM) machines for the shoulders. In this study, we attempted to determine the locations of the instantaneous center of rotation for shoulder motion of the arm. Fourteen healthy adult subjects (age 18 to 30 years) participated in this study, five were females and the rest were males, The instantaneous center of rotation was computed for two different shoulder motions: (1) abduction motion in the sagittal plane and, (2) abduction motion in the coronal plane. The motion of the arm was monitored by a magnetic device (Polhemus). Our results showed that the location of the instantaneous center was much more proximal than the glenohumoral joint. It was located between 11 and 16 cm from the C/sub 7/ vertebra for the abduction in the coronal plane and this distance varied from 9 to 13 cm for the motion in sagittal plane.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123922376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-04-07DOI: 10.1109/SBEC.1995.514425
J. Gardner, R. W. Schubert
Previous theoretical assessments of myoglobin facilitation have failed to validate modeling results with a comparison to experimental data. In this study, myoglobin reaction kinetics is added to a proven cardiac tissue model in an effort to determine the extent of myoglobin facilitation. The mathematical model is compared to experimental pO/sub 2/ measurements taken from an isolated perfused cat heart preparation. The model is based upon the Krogh cylinder. In the tissue region there is axial diffusion, zero-order oxygen consumption, and myoglobin kinetics. Oxygen flux leaving the capillary is represented by a concentration difference times a mass transport coefficient, meaning that the tissue is considered "well mixed" radially. The tissue model is called the Radially-Averaged-Axially-Distributed (RAAD) model. Formulation of the mathematical problem describing the RAAD model yields a stiff, fourth-order, nonlinear, ordinary differential equation, boundary value problem. The equation set was solved numerically using a finite difference routine on a mainframe computer. The amount of diffusion facilitation by myoglobin was estimated by observing the inlet arteriolar pO/sub 2/ for the model with and without myoglobin. The computer simulations show that myoglobin does facilitate diffusion, but only to a small extent. The change in arteriolar pO/sub 2/ was less than 1% (0.76%). The facilitation is limited due to the low concentration and low diffusability of myoglobin in tissue. This suggests that facilitation of oxygen transport is not myoglobin's main physiological function.
{"title":"Myoglobin facilitated oxygen diffusion in the heart: a mathematical assessment","authors":"J. Gardner, R. W. Schubert","doi":"10.1109/SBEC.1995.514425","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514425","url":null,"abstract":"Previous theoretical assessments of myoglobin facilitation have failed to validate modeling results with a comparison to experimental data. In this study, myoglobin reaction kinetics is added to a proven cardiac tissue model in an effort to determine the extent of myoglobin facilitation. The mathematical model is compared to experimental pO/sub 2/ measurements taken from an isolated perfused cat heart preparation. The model is based upon the Krogh cylinder. In the tissue region there is axial diffusion, zero-order oxygen consumption, and myoglobin kinetics. Oxygen flux leaving the capillary is represented by a concentration difference times a mass transport coefficient, meaning that the tissue is considered \"well mixed\" radially. The tissue model is called the Radially-Averaged-Axially-Distributed (RAAD) model. Formulation of the mathematical problem describing the RAAD model yields a stiff, fourth-order, nonlinear, ordinary differential equation, boundary value problem. The equation set was solved numerically using a finite difference routine on a mainframe computer. The amount of diffusion facilitation by myoglobin was estimated by observing the inlet arteriolar pO/sub 2/ for the model with and without myoglobin. The computer simulations show that myoglobin does facilitate diffusion, but only to a small extent. The change in arteriolar pO/sub 2/ was less than 1% (0.76%). The facilitation is limited due to the low concentration and low diffusability of myoglobin in tissue. This suggests that facilitation of oxygen transport is not myoglobin's main physiological function.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126116605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-04-07DOI: 10.1109/SBEC.1995.514419
M. Martinez, R. Anderson, K. Bundy, D. Dinh
The goal of this study was to determine concentration distributions of titanium released from Ti-bA1-4V cervical spine plates i n canines and to relate this to observable implant surface damage. This research is part of an ongoing project to determine if there is a correlation between titanium release and plate strain and screw-plate interface motion in a canine cervical spine model. Two posterior cervical spine plates were implanted in four canines at the C4-C5 level. The overlaying tissue covering each implant was examined for trace levels of titanium using Inductively Coupled Plasma (ICP) Atomic Emission Spectroscopy. The highest titanium levels (>lo0 ppm dry wt.) were found in 1:issue samples closest to the screw- plate interfaces. Most of the surface damage observed was also found at these locations. Titanium was also found to have diffused into the tissue surrounding these locations.
{"title":"Titanium Trace Metal Analysis of Tissue Overlaying Cervical Spine Plates in Dogs","authors":"M. Martinez, R. Anderson, K. Bundy, D. Dinh","doi":"10.1109/SBEC.1995.514419","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514419","url":null,"abstract":"The goal of this study was to determine concentration distributions of titanium released from Ti-bA1-4V cervical spine plates i n canines and to relate this to observable implant surface damage. This research is part of an ongoing project to determine if there is a correlation between titanium release and plate strain and screw-plate interface motion in a canine cervical spine model. Two posterior cervical spine plates were implanted in four canines at the C4-C5 level. The overlaying tissue covering each implant was examined for trace levels of titanium using Inductively Coupled Plasma (ICP) Atomic Emission Spectroscopy. The highest titanium levels (>lo0 ppm dry wt.) were found in 1:issue samples closest to the screw- plate interfaces. Most of the surface damage observed was also found at these locations. Titanium was also found to have diffused into the tissue surrounding these locations.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124787233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-04-07DOI: 10.1109/SBEC.1995.514494
H. Ranu
A new treatment technique has been developed to relieve the herniated disc symptoms. An Nd:YAG laser is used to vaporize a small volume of the nucleus pulposus and thus regressing the spinal disc. In vitro and in vivo intradiscal pressures are measured before, during and after laserectomy. The results show a significant reduction in intradiscal pressures after laserectomy, as a small volume of the nucleus pulposus is ablated.
{"title":"Laserectomy of the human nucleus pulposus and intradiscal pressure measurements: an in vitro and in vivo study","authors":"H. Ranu","doi":"10.1109/SBEC.1995.514494","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514494","url":null,"abstract":"A new treatment technique has been developed to relieve the herniated disc symptoms. An Nd:YAG laser is used to vaporize a small volume of the nucleus pulposus and thus regressing the spinal disc. In vitro and in vivo intradiscal pressures are measured before, during and after laserectomy. The results show a significant reduction in intradiscal pressures after laserectomy, as a small volume of the nucleus pulposus is ablated.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129680882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-04-07DOI: 10.1109/SBEC.1995.514430
S. Atchison, D. P. Mukherjee, R. N. Kruse, R. Mayeux, J. Albright
It has been shown that fixation of transverse acetabular fractures with a posterior plate and either an anterior column plate or screw provides adequate stability (see T. Sawaguchi et al., Acta Orthop. Scand., vol. 55, p. 601-5, 1984). The hypothesis tested in the current study is that simple transverse acetabular fractures can be fixed by posterior plating alone without the need for anterior column plating or screw fixation. If so, this would reduce operative time and eliminate the difficult task of anterior screw placement or dissection for anterior plating. So the objective of this study was to compare the stability of transverse acetabular fractures fixed with posterior plating alone versus posterior plating and anterior column screw fixation, at both zero and 90/spl deg/ of hip flexion. The authors conclude that: 1. The simple transverse acetabular fractures are "stable" when loaded at 0/spl deg/ of hip flexion and "unstable" when loaded at 90/spl deg/ of hip flexion. 2. There was a statistically significant difference in the axial stiffness and the posterior displacement at the fracture site when comparing no fixation versus fixation only at 90/spl deg/ hip flexion. But there was no significant difference when comparing posterior plating alone versus posterior plate and anterior column screw fixation at both 0/spl deg/ and 90/spl deg/ of hip flexion.
{"title":"Internal fixation of transverse acetabular fractures","authors":"S. Atchison, D. P. Mukherjee, R. N. Kruse, R. Mayeux, J. Albright","doi":"10.1109/SBEC.1995.514430","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514430","url":null,"abstract":"It has been shown that fixation of transverse acetabular fractures with a posterior plate and either an anterior column plate or screw provides adequate stability (see T. Sawaguchi et al., Acta Orthop. Scand., vol. 55, p. 601-5, 1984). The hypothesis tested in the current study is that simple transverse acetabular fractures can be fixed by posterior plating alone without the need for anterior column plating or screw fixation. If so, this would reduce operative time and eliminate the difficult task of anterior screw placement or dissection for anterior plating. So the objective of this study was to compare the stability of transverse acetabular fractures fixed with posterior plating alone versus posterior plating and anterior column screw fixation, at both zero and 90/spl deg/ of hip flexion. The authors conclude that: 1. The simple transverse acetabular fractures are \"stable\" when loaded at 0/spl deg/ of hip flexion and \"unstable\" when loaded at 90/spl deg/ of hip flexion. 2. There was a statistically significant difference in the axial stiffness and the posterior displacement at the fracture site when comparing no fixation versus fixation only at 90/spl deg/ hip flexion. But there was no significant difference when comparing posterior plating alone versus posterior plate and anterior column screw fixation at both 0/spl deg/ and 90/spl deg/ of hip flexion.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127076853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-04-07DOI: 10.1109/SBEC.1995.514422
S.W. Mizelle, B. Gupta, V. Kasyanov
The success of small diameter vascular grafts in determining long term patency is highly limited due to the lack of compliance associated with the structures currently produced. The mismatch in compliance between the graft and the host artery has been noted as the primary cause for graft failure. Currently, there are many methods used to measure compliance, however there still exists a great deal of ambiguity in the measurements obtained by these methods. It is essential that the currently available measurement techniques be reviewed so that a simple standardized method for compliance measurement may be identified and used. The availability of such a method would lead to a significant reduction in the amount of inconsistency currently encountered by researchers when comparing compliance values.
{"title":"Compliance of small-diameter vascular grafts as a determinant of patency","authors":"S.W. Mizelle, B. Gupta, V. Kasyanov","doi":"10.1109/SBEC.1995.514422","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514422","url":null,"abstract":"The success of small diameter vascular grafts in determining long term patency is highly limited due to the lack of compliance associated with the structures currently produced. The mismatch in compliance between the graft and the host artery has been noted as the primary cause for graft failure. Currently, there are many methods used to measure compliance, however there still exists a great deal of ambiguity in the measurements obtained by these methods. It is essential that the currently available measurement techniques be reviewed so that a simple standardized method for compliance measurement may be identified and used. The availability of such a method would lead to a significant reduction in the amount of inconsistency currently encountered by researchers when comparing compliance values.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121612025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-04-07DOI: 10.1109/SBEC.1995.514483
A. Barreto, M. Heimer, M. Garcia
The changes in the blood volume pulse (BVP) of exercising subjects are monitored and analyzed using three different approaches: averaged histogram, average periodogram and average beat amplitude and area. The results for all of these methods of analysis are shown.
{"title":"Characterization of photoplethysmographic blood volume pulse waveforms for exercise evaluation","authors":"A. Barreto, M. Heimer, M. Garcia","doi":"10.1109/SBEC.1995.514483","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514483","url":null,"abstract":"The changes in the blood volume pulse (BVP) of exercising subjects are monitored and analyzed using three different approaches: averaged histogram, average periodogram and average beat amplitude and area. The results for all of these methods of analysis are shown.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"42 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120917933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-04-07DOI: 10.1109/SBEC.1995.514436
A. M. Rust-Dawicki, S. Cook
A series of 40 titanium-coated and uncoated polyetheretherketone (PEEK) cylindrical implants were placed in unicortical sites in femurs of 4 mongrel dogs. The implants were evaluated mechanically and histologically at periods of 4 and 8 weeks. Interface attachment strength was calculated for each specimen, as well as measurements of bone contact, porosity, bone ingrowth, inflammatory response and mode of failure. Statistical analysis revealed the uncoated implants had significantly higher shear strength values at 4 weeks, but no significant difference from the coated implants at 8 weeks. There was no significant increase in bone contact between 4 and 8 weeks for either the coated or uncoated specimens. At both 4 and 8 weeks, the coated specimens had significantly higher percentages of bone contact.
{"title":"Preliminary evaluation of titanium-coated PEEK implants","authors":"A. M. Rust-Dawicki, S. Cook","doi":"10.1109/SBEC.1995.514436","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514436","url":null,"abstract":"A series of 40 titanium-coated and uncoated polyetheretherketone (PEEK) cylindrical implants were placed in unicortical sites in femurs of 4 mongrel dogs. The implants were evaluated mechanically and histologically at periods of 4 and 8 weeks. Interface attachment strength was calculated for each specimen, as well as measurements of bone contact, porosity, bone ingrowth, inflammatory response and mode of failure. Statistical analysis revealed the uncoated implants had significantly higher shear strength values at 4 weeks, but no significant difference from the coated implants at 8 weeks. There was no significant increase in bone contact between 4 and 8 weeks for either the coated or uncoated specimens. At both 4 and 8 weeks, the coated specimens had significantly higher percentages of bone contact.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"22 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120966027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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