A Comparison of Two Implant Systems in Restoration of Hip Geometry in Arthroplasty.

06:00 EST 18th November 2010 | BioPortfolio

Summary of "A Comparison of Two Implant Systems in Restoration of Hip Geometry in Arthroplasty."

Restoration of hip offset and leg length during THA is often limited by available implant geometries. The recent introduction of femoral components with a modular junction at the base of the neck (two modular junction components) has expanded the options to restore femoral offset and leg length. QUESTIONS/
We asked (1) whether a femoral component with two modular junctions would predict by templating more frequent restoration of preoperative offset and leg length abnormalities than one with single modular junctions; and (2) how our use of these options compared with national sales data. PATIENTS AND
We retrospectively reviewed the preoperative templating data in 100 primary THAs using single modular junction implants with only a neutral version stem and 100 THAs using two modular junction implants. We compared the frequency with which the desired leg length and offset were completely restored by preoperative templating in the two groups.
Offset and leg lengths were restored to within 1 mm in 85% of cases with two modular junction implants and 60% of cases with single modular junction implants. An anteverted or a retroverted neck was used in 25% of cases with the two modular junction stems. The national sales data revealed femoral neck components with version were used in 28% of cases.
The use of a femoral component with two modular junctions resulted in more frequent ability to restore femoral offset and leg length than a single modular junction. The advantage of clinical flexibility should be tempered by the potential concerns of prosthetic mechanical failure (which has been reported in another implant system with two modular junctions), increased third-body wear and corrosive debris, and increased prosthetic cost. LEVEL OF
Level II, prognostic study. See Guidelines for Authors for a complete description of levels of evidence.


The New Mexico Center for Joint Replacement Surgery, New Mexico Orthopaedics, 201 Cedar SE, Suite 6600, Albuquerque, NM, 87106, USA,

Journal Details

This article was published in the following journal.

Name: Clinical orthopaedics and related research
ISSN: 1528-1132


DeepDyve research library

PubMed Articles [11876 Associated PubMed Articles listed on BioPortfolio]

A Simple Technique for Fabricating a Screw-Retained/Cemented Implant-Supported Crown.

Many factors figure into the long-term success of an implant-supported restoration. While some are uncontrollable, others are manageable. The cement-retained implant-supported restoration is easier to...

Treatment of acetabular bone defects in revision hip arthroplasty using the Revisio-System.

Many different systems for the management of primary and secondary acetabular defects are available, each with its inherent advantages and disadvantages. The Revisio-System is a press-fit oval mono-b...

Femoral Implant Design Modification Decreases the Incidence of Patellar Crepitus in Total Knee Arthroplasty.

Patellar crepitus is a complication most commonly seen in patients implanted with a posterior-stabilized total knee arthroplasty (TKA). Recently, design changes in the patellofemoral geometry and the ...

Does Prior Cartilage Restoration Impact Outcomes Following Knee Arthroplasty?

This study compared patients who failed a cartilage restoration procedure and underwent ipsilateral knee arthroplasty with matched control subjects undergoing knee arthroplasty without prior cartilage...

The prognosis of splinted restoration of the most-distal implants in the posterior region.

The aim of this study was to compare the efficacies of two-implant splinting (2-IS) and single-implant restoration (1-IR) in the first and second molar regions over a mean functional loading period (F...

Clinical Trials [4319 Associated Clinical Trials listed on BioPortfolio]

Comparison of Implant Positioning With Robotic Aided Surgery and Traditional Jig Positioning in Total Knee Arthroplasty

The purpose of this study is to compare the outcomes and accuracy of implant positioning in robotic assisted total knee arthroplasty with traditional manually instrumented total knee arthr...

Esthetic Outcomes of Immediately Placed Implants Receiving Immediate Provisionalization and Delayed Restoration

The purpose of this study is to compare two different timings of restoring dental implants that are placed right after tooth extraction: The test group will have the provisional crown plac...

Clinical Outcomes in Shoulder Hemi-arthroplasty Using a PyC Spherical Interpositional Implant

The INSPYRE implant is a new range of shoulder hemi-arthroplasty device. It consists of a Pyrocarbon spherical interpositional implant and is indicated in primary surgery to relieve severe...

Clinical Outcome Comparison Between Medial and Lateral Offset Reverse Shoulder Arthroplasty

The purpose of this study is to prospectively evaluate two FDA approved implant designs for the Tornier Reverse Shoulder arthroplasty. The small difference in design is the amount of offse...

Clinical Outcomes of Knee Replacement

The objective of this study is to document the demographic and clinical characteristics and the long-term clinical outcomes of patients who require a total knee arthroplasty (TKA). The hy...

Medical and Biotech [MESH] Definitions

Comparison of various psychological, sociological, or cultural factors in order to assess the similarities or diversities occurring in two or more different cultures or societies.

A prosthesis or restoration placed for a limited period, from several days to several months, which is designed to seal the tooth and maintain its position until a permanent restoration (DENTAL RESTORATION, PERMANENT) will replace it. (From Jablonski, Dictionary of Dentistry, 1992)

Insertion of an implant into the bone of the mandible or maxilla. The implant has an exposed head which protrudes through the mucosa and is a prosthodontic abutment.

Endosseous dental implantation where implants are fitted with an abutment or where an implant with a transmucosal coronal portion is used immediately (within 1 week) after the initial extraction. Conventionally, the implantation is performed in two stages with more than two months in between the stages.

The plan and delineation of DENTAL IMPLANT fitting with DENTAL ABUTMENT.

Quick Search

DeepDyve research library

Relevant Topics

Arthroplasty Joint Disorders Orthopedics Spinal Cord Disorders Orthopedics is the science or practice of correcting deformities caused by disease or damage to the bones and joints of the skeleton. This specialized branch of surgery may ...

The Top 100 Pharmaceutical Companies
Top 10 biotech and pharmaceutical companies worldwide based on market value in 2015 2015 ranking of the global top 10 biotech and pharmaceutical companies based on revenue (in billion U.S. dollars) Johnson & Johnson, U.S. 74...

Searches Linking to this Article