Effect of interposed tissue and contamination on the initial stability of a highly porous press-fit acetabular cup.

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
Daniel H WizniaWilliam J Long

Abstract

For biologic fixation, press-fit acetabular cups should have initial stability with minimal micromotion and osteoconductive surfaces in contact with bone. Inadequate exposure potentially influences initial stability by increasing the possibility of soft tissue interposition and contamination at the implant-tissue interface. A sawbone model was used to examine how interposed tissue and contamination influence initial cup stability. Seven groups (n = 4) were tested with varying levels of interposed fatty and fibrous tissue placed around the rim of the cup. 54 millimeter in diameter highly porous hemispherical acetabular cups (Stryker, Mahwah NJ) and 54 mm reamed cavities in sawbone blocks were used. Shells were seated and maximum lever out force was recorded for each sample. Cups with fibrous tissue spaced evenly along the rim had a lever out force that was 150% of the control (107 ± 6 vs. 150 ± 12N, p = 0.005), and fatty tissue contamination had a lever out force that was 140% of the control (143 ± 18 vs. 107 ± 6N, p = 0.04). Cups with fibrous tissue placed eccentrically along the rim had a lever out force that was double the control 107 ± 6 N vs. 200 ± 15 N (p = 0.001). Surprisingly, fatty tissue contamination and fibrous tissu...Continue Reading

References

Sep 1, 1992·The Journal of Arthroplasty·E AdlerF J Kummer
May 1, 1992·The Journal of Bone and Joint Surgery. British Volume·M J CurtisD S Hungerford
Dec 1, 1991·The Journal of Arthroplasty·J B StiehlD A Skrade
Mar 6, 1998·Biomedizinische Technik. Biomedical Engineering·R P PittoV Hofmeister
Jun 24, 1999·Biomedizinische Technik. Biomedical Engineering·R P Pitto, V Hofmeister
Nov 13, 2012·The Journal of Arthroplasty·Scott R SmallMerrill A Ritter
Jun 12, 2013·Medical Engineering & Physics·Vincent MathieuGuillaume Haïat
Nov 19, 2013·The Journal of Arthroplasty·Keith A FehringWilliam A Jiranek
May 1, 2017·The Journal of Arthroplasty·Ronald E DelanoisMichael A Mont

❮ Previous
Next ❯

Citations

Jul 19, 2019·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Ruben DoyleJonathan R T Jeffers
Feb 23, 2020·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Dermot O'Rourke, Mark Taylor
Aug 12, 2020·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
Aug 15, 2020·Bone & Joint Research·Ruben DoyleJonathan R T Jeffers

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.