Tapered cementless femoral stem: difficult to place in varus but performs well in those rare cases.

Orthopedics

Joint Implant Surgeons Inc, 7277 Smith's Mill Rd, Ste 200, New Albany, OH 43054, USA.

Published: April 2007

AI Article Synopsis

  • A study analyzed the placement of titanium femoral components in hip surgeries, finding that 2.4% were positioned in a varus alignment of 5 degrees or more, but overall outcomes were positive.
  • Harris hip scores showed significant improvement, averaging a 50-point increase post-surgery, indicating enhanced patient mobility and satisfaction.
  • The titanium components displayed a 100% survival rate against aseptic loosening and a 96% overall survival rate after an average of 10 years, suggesting their reliability despite some misalignment.

Article Abstract

This retrospective review was conducted to determine the incidence and minimum 5-year follow-up of varus placement of a tapered, proximally plasma-sprayed, titanium femoral component. Twenty-six (2.4%) of 1080 components were placed in > or = 5 degrees of varus in primary cementless total hip arthroplasty at one institution. Harris hip scores improved an average of 50 points. One stem was revised for malposition at 2.5 years, yet was well-fixed by radiographic criteria. Survival with aseptic loosening as an end-point is 100% with an overall femoral component survival of 96% at an average 10-year follow-up. A tapered, titanium component is reliably placed into appropriate position and is forgiving as to varus implant position.

Download full-text PDF

Source
http://dx.doi.org/10.3928/01477447-20070401-16DOI Listing

Publication Analysis

Top Keywords

femoral component
8
tapered cementless
4
cementless femoral
4
femoral stem
4
stem difficult
4
difficult place
4
varus
4
place varus
4
varus performs
4
performs well
4

Similar Publications

Introduction: After total knee arthroplasty (TKA), dissatisfaction rates are described up to 30 %. Optimal alignment of the prosthesis in TKA is believed to improve clinical outcome and survival rates. Radiological outliers after TKA are used to define this alignment.

View Article and Find Full Text PDF

Minimum twenty-year follow-up of fixed-vs mobile-bearing total knee arthroplasty: Double blinded randomized trial.

J Clin Orthop Trauma

January 2025

Loyola University Health System, Department of Orthopaedic Surgery and Rehabilitation, 2160 South First Avenue, 60153, Maywood, IL, USA.

Introduction: Mobile-bearing (MB) inserts, designed to minimize aseptic loosening and to reduce contact stresses leading to polyethylene wear, are an alternative to fixed-bearing (FB) inserts. Most studies have shown no significant difference between MB and FB constructs, and there is limited long-term data comparing the two constructs [1,2,3,4]. The purpose of this study was to report the outcomes of a randomized controlled trial comparing MB versus FB inserts on patients with minimum 20-year follow-up.

View Article and Find Full Text PDF

Background: The study focused on kinematically aligned total knee arthroplasty (KA TKA). It identified which coronal plane alignment of the knee (CPAK) types are associated with a higher proportion of medial deviation of the 6° prosthetic trochlear groove (PTG) relative to the quadriceps' line of pull and whether medial deviation adversely affected the Forgotten Joint Score (FJS). The research calculated the minimum PTG angle required to prevent medial deviation by at least 2° in all patients.

View Article and Find Full Text PDF

A 7,000-year-old multi-component arrow poison from Kruger Cave, South Africa.

iScience

December 2024

Research Centre for Plant Metabolomics, Department of Biochemistry, University of Johannesburg, Johannesburg, South Africa.

We present the results of a GC-MS and UHPLC-MS analysis of residue recovered from the marrow cavity of a 7,000-year-old bovid femur from Kruger Cave, South Africa. The femur was filled with an unknown substance into which were embedded three bone arrowheads, indicating that the femur served as a quiver. Our results reveal the presence of digitoxin and strophanthidin, both cardiac glycosides associated with hunting poisons.

View Article and Find Full Text PDF

Background: Survival at 25 years' follow-up for total hip arthroplasty (THA) has been reported at 5%-77%, with hydroxyapatite (HA) coating, due to its osteo-conductive properties, used to enhance implant fixation and survival. The progressive increase in life expectancy raises doubts regarding HA-coated THA survival and THA revision surgery risk. The aim of our study was to retrospectively analyse survival for primary uncemented fully HA-coated THA after 28 years' follow-up.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!