Factors Affecting Wear of Constrained Polyethylene Tibial Inserts in Total Knee Arthroplasty

The Journal of Arthroplasty
Hee-Nee PangSteven J MacDonald

Abstract

Wear in posterior-stabilized (PS) polyethylene tibial inserts depends on component position, limb alignment, and ligament balancing. Valgus-varus constrained (VVC) inserts are likely to be affected similarly. We aimed to compare wear characteristics of VVC and PS inserts and identify associated factors. This was a retrieval analysis (macroscopic and radiographic) of all 18 VVC liners collected from patients who underwent revision surgery from 1999 to 2011. These patients were matched to another group with PS inserts who underwent revision in the same time period. There was significantly more damage in the posts of the VVC group (13.0 ± 5.0, compared to 4.7 ± 1.9 in the PS group; P < .001). Within the VVC group, the total damage score and cold flow damage were significantly higher with excessive joint line changes (≥5 mm; P = .01). The excessive joint line elevation was associated with rotational wear pattern of the post (P = .004). Damage scores were increased with femoral component malposition (P = .04), anterior tibial slope (P = .04), and tibial component malposition (P = .04). Joint line elevation, femoral and tibial component malposition, and anterior tibial slope resulted in significantly more wear in the VVC inserts. Joi...Continue Reading

References

Apr 1, 1992·Journal of Biomechanics·M A LafortuneA Kalenak
Jan 1, 1991·Journal of Biomechanics·B el NahassP S Walker
Aug 23, 2003·The Journal of Arthroplasty·David HendelMoshe Weisbort
Sep 5, 2006·The Journal of Arthroplasty·Paul F Lachiewicz, Elizabeth S Soileau
Jun 7, 2008·The Journal of Arthroplasty·B Sonny BalKenneth Cherry
Sep 2, 2008·The Journal of Arthroplasty·Elango Selvarajah, Gary Hooper
Aug 31, 2010·The Journal of Arthroplasty·Venkata R RapuriChristopher P Beauchamp
Aug 26, 2011·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·D D NikolopoulosI V Michos
Dec 31, 2011·The Knee·Ajay SrivastavaDarryl D D'Lima

❮ Previous
Next ❯

Citations

Oct 11, 2007·The Journal of Arthroplasty·Diane L DahmDaniel J Berry
Mar 10, 2018·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Arianna CerquigliniAlister J Hart
Oct 18, 2018·International Orthopaedics·Cheol Hee ParkSang Jun Song
May 7, 2020·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Robin PourzalMarkus A Wimmer

❮ 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.