Reduction quality and nail fixation ratio as bone-implant stability factors associated with reoperation for trochanteric fractures

Injury ◽  
2021 ◽  
Author(s):  
Norio Yamamoto ◽  
Yosuke Tomita ◽  
Tomoyuki Noda ◽  
Tomoo Inoue ◽  
Yusuke Mochizuki ◽  
...  
Keyword(s):  
Trochanteric Fractures ◽  
Implant Stability ◽  
Bone Implant ◽  
Factors Associated ◽  
Fixation Ratio

scholarly journals Biomechanical behaviours of the bone–implant interface: a review

2019 ◽  
Vol 16 (156) ◽  
pp. 20190259 ◽  
Author(s):  
Xing Gao ◽  
Manon Fraulob ◽  
Guillaume Haïat
Keyword(s):  
Bone Tissue ◽  
Medical Devices ◽  
State Of The Art ◽  
Biomechanical Properties ◽  
Review Article ◽  
Implant Stability ◽  
Bone Implant ◽  
Current State ◽  
Mechanical Methods

In recent decades, cementless implants have been widely used in clinical practice to replace missing organs, to replace damaged or missing bone tissue or to restore joint functionality. However, there remain risks of failure which may have dramatic consequences. The success of an implant depends on its stability, which is determined by the biomechanical properties of the bone–implant interface (BII). The aim of this review article is to provide more insight on the current state of the art concerning the evolution of the biomechanical properties of the BII as a function of the implant's environment. The main characteristics of the BII and the determinants of implant stability are first introduced. Then, the different mechanical methods that have been employed to derive the macroscopic properties of the BII will be described. The experimental multi-modality approaches used to determine the microscopic biomechanical properties of periprosthetic newly formed bone tissue are also reviewed. Eventually, the influence of the implant's properties, in terms of both surface properties and biomaterials, is investigated. A better understanding of the phenomena occurring at the BII will lead to (i) medical devices that help surgeons to determine an implant's stability and (ii) an improvement in the quality of implants.

scholarly journals Anodisation Increases Integration of Unloaded Titanium Implants in Sheep Mandible

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Warwick J. Duncan ◽  
Min-Ho Lee ◽  
Tae-Sung Bae ◽  
Sook-Jeong Lee ◽  
Jennifer Gay ◽  
...  
Keyword(s):  
Titanium Implant ◽  
Titanium Implants ◽  
Implant Stability ◽  
Bone Implant ◽  
Implant Stability Quotient ◽  
Phosphate Ions ◽  
Surface Control ◽  
Bone Implant Contact ◽  
The Subject ◽  
Clinically Significant

Spark discharge anodic oxidation forms porous TiO2films on titanium implant surfaces. This increases surface roughness and concentration of calcium and phosphate ions and may enhance early osseointegration. To test this, forty 3.75 mm × 13 mm titanium implants (Megagen, Korea) were placed into healed mandibular postextraction ridges of 10 sheep. There were 10 implants per group: RBM surface (control), RBM + anodised, RBM + anodised + fluoride, and titanium alloy + anodised surface. Resonant frequency analysis (RFA) was measured in implant stability quotient (ISQ) at surgery and at sacrifice after 1-month unloaded healing. Mean bone-implant contact (% BIC) was measured in undemineralised ground sections for the best three consecutive threads. One of 40 implants showed evidence of failure. RFA differed between groups at surgery but not after 1 month. RFA values increased nonsignificantly for all implants after 1 month, except for controls. There was a marked difference in BIC after 1-month healing, with higher values for alloy implants, followed by anodised + fluoride and anodised implants. Anodisation increased early osseointegration of rough-surfaced implants by 50–80%. RFA testing lacked sufficient resolution to detect this improvement. Whether this gain in early bone-implant contact is clinically significant is the subject of future experiments.

scholarly journals Does the Osseodensification Technique Allow for the use of a Healing Chamber with Primary Stability in Low-Density Bone? An in Vivo Study

2021 ◽  
Author(s):  
Rafael Coutinho Mello-Machado ◽  
Suelen Cristina Sartoretto ◽  
Jose Mauro Granjeiro ◽  
José Albuquerque Calasans-Maia ◽  
Marcelo Jose Guedes Pinheiro Uzeda ◽  
...  
Keyword(s):  
Bone Remodeling ◽  
Bone Growth ◽  
Primary Stability ◽  
Insertion Torque ◽  
Low Density ◽  
Implant Stability ◽  
Bone Implant ◽  
Implant Stability Quotient ◽  
Implant Bed

Abstract This study aimed to investigate in vivo the hypothesis that the osseodensification technique, through a wider osteotomy, produce healing chambers at the implant-bone interface with no impact on primary stability osseointegration in low-density bone. Twenty implants (3.5 x 10 mm) presenting nanohydroxyapatite (nHA) surface were inserted in the ilium of ten sheep, after preparation of a 2.7-mm wide implant bed with conventional subtractive drilling (SCD) or a 3.8-mm wide implant bed with an osseodensification bur system (OBS) (n = 5/group/period). The final insertion torque (IT) and implant stability quotient (ISQ) evaluated the primary implant stability. After 14 and 28 days, the bone samples containing the implants were processed for histological and histomorphometric evaluation of bone implant contact (BIC) and bone area fraction occupancy (BAFO). No significant differences occurred between the implant bed preparations regarding IT and ISQ (P > 0.05). Histological analysis showed bone remodeling, and bone growth in all samples with no inflammatory infiltrate. BIC values were higher for SCD after 14 and 28 days (p < 0.05), however BAFO values were similar on both groups (p > 0.05). It was possible to conclude that the osseodensification technique allowed a wider implant bed preparation with no prejudice on primary stability and bone remodeling.

scholarly journals Implant stability in the treatment of MRSA bone implant infections with linezolid versus vancomycin in a rabbit model

2011 ◽  
Vol 30 (2) ◽  
pp. 190-195 ◽  
Author(s):  
Kerstin Schroeder ◽  
Hans-Georg Simank ◽  
Helga Lorenz ◽  
Stefanie Swoboda ◽  
Heinrich K. Geiss ◽  
...  
Keyword(s):  
Rabbit Model ◽  
Implant Stability ◽  
Bone Implant

Potential Damage to Bone–Implant Interface When Measuring Initial Implant Stability

2009 ◽  
Vol 80 (11) ◽  
pp. 1868-1874 ◽  
Author(s):  
Wook-Jin Seong ◽  
Heather J. Conrad ◽  
James E. Hinrichs
Keyword(s):  
Implant Stability ◽  
Bone Implant ◽  
Potential Damage

scholarly journals Monitoring the Changes of Material Properties at Bone-Implant Interface during the Healing Process In Vivo: A Viscoelastic Investigation

2017 ◽  
Vol 2017 ◽  
pp. 1-10
Author(s):  
Hsiang-Ho Chen ◽  
Wei-Yi Lai ◽  
Tze-Jian Chee ◽  
Ya-Hui Chan ◽  
Sheng-Wei Feng
Keyword(s):  
Viscoelastic Properties ◽  
Healing Process ◽  
Rabbit Model ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Stability Parameters ◽  
Bone Implant ◽  
Implant Stability Quotient ◽  
The Mean

The aim of this study was to monitor the changes of viscoelastic properties at bone-implant interface via resonance frequency analysis (RFA) and the Periotest device during the healing process in an experimental rabbit model. Twenty-four dental implants were inserted into the femoral condyles of rabbits. The animals were sacrificed immediately after implant installation or on day 14, 28, or 56 after surgery. Viscoelastic properties at bone-implant interface were evaluated by measuring the implant stability quotient (ISQ) using RFA and by measuring the Periotest values (PTVs) using the Periotest device. The bone/implant specimens were evaluated histopathologically and histomorphometrically to determine the degree of osseointegration (BIC%). The BIC% values at different time points were then compared with the corresponding ISQ values and PTVs. The mean ISQ value increased gradually and reached 81±1.7 on day 56, whereas the mean PTV decreased over time, finally reaching −0.7±0.5 on day 56. Significant correlations were found between ISQ and BIC% (r=0.701, p<0.001), PTV and BIC% (r=-0.637, p<0.05), and ISQ and PTV (r=-0.68, p<0.05). These results show that there is a positive correlation between implant stability parameters and peri-implant-bone healing, indicating that the RFA and Periotest are useful for measuring changes of viscoelastic properties at bone-implant interface and are reliable for indirectly predicting the degree of osseointegration.

Treatment of Trochanteric Fractures of the Femur with Compression Hip Screw-Analysis of Factors associated with Failure of Fixation-

2002 ◽  
Vol 15 (3) ◽  
pp. 312
Author(s):  
Chan Hoon Yoo ◽  
Hong Tae Kim ◽  
Young Soo Byun ◽  
Jun Mo Nam ◽  
Young Ho Cho ◽  
...  
Keyword(s):  
Trochanteric Fractures ◽  
Factors Associated ◽  
Hip Screw ◽  
Fractures Of The Femur

scholarly journals A Parametric Study on a Dental Implant Geometry Influence on Bone Remodelling through a Numerical Algorithm

Prosthesis ◽  
2021 ◽  
Vol 3 (2) ◽  
pp. 157-172
Author(s):  
Dario Santonocito ◽  
Fabiana Nicita ◽  
Giacomo Risitano
Keyword(s):  
Bone Tissue ◽  
Dental Implant ◽  
Bone Remodelling ◽  
Implant Stability ◽  
Bone Implant ◽  
Design Characteristics ◽  
First Time ◽  
Surrounding Bone ◽  
Over Time

To ensure the long-term success of a dental implant, it is imperative to understand how chewing loads are transferred through the implant prosthetic components to the surrounding bone tissue. The stress distribution depends on several factors, such as load type, bone–implant interface, shape and materials of the fixture and quality and quantity of the bone. These aspects are of fundamental importance to ensure implant stability and to evaluate the remodelling capacity of the bone tissue to adapt to its biomechanical environment. A bone remodelling algorithm was formulated by the authors and implemented by means of finite element simulations on four different implants with several design characteristics. Internal bone microstructure and density, apposition/resorption of tissue and implant stability were evaluated over a period of 12 months, showing the influence of the geometry on bone tissue evolution over time. Bone remodelling algorithms may be a useful aid for clinicians to prevent possible implant failures and define an adequate implant prosthetic rehabilitation for each patient. In this work, for the first time, external bone remodelling was numerically predicted over time.

Sign in / Sign up

Export Citation Format

Share Document