Radiological Riskfactors for Dislocation of Hip Hemiarthroplasty

NCT ID: NCT02131987

Last Updated: 2015-10-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

324 participants

Study Classification

OBSERVATIONAL

Study Start Date

2006-01-31

Study Completion Date

2013-12-31

Brief Summary

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Between January 1 2006 and December 31 2013, at our department 324 patients underwent hemiarthroplasty (HA) for displaced femoral-neck fracture with a bipolar prosthesis (Variokopf, Link®, Germany) by the use of the posteriolateral approach. Patients with pathological fractures and HA performed with direct lateral approach were excluded. A retrospective cohort study were conducted. Patients with prosthetic dislocation formed one group and patients without dislocation formed the control group.

As standard, post surgery radiographs (anteroposterior and lateral) were taken. After these were performed patient started weight bearing as soon as possible. Clinical data regarding patient demographics, details of the surgical procedure and the medical comorbidities were collected by the use of patient and operative records. Radiological analysis with position evaluation was performed using the post surgery radiographs by measuring Wiberg angle, inequality of leg length and femoral offset of the prostheses and compared with non-operated hip joint using the post surgery x-ray images.

Our hypothesis were that patients with single- or recurrent dislocations had shortened postoperative leg length, decreased femoral offsed and a Wiberg angle less than 25 degrees.

Detailed Description

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Conditions

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Dislocation Femoral Neck Fracture

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

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Dislocation

Patients operated with hip hemiarthroplasty for a femoral neck fracture with a postoperative dislocation of the prosthesis

No interventions assigned to this group

Non-dislocated

Patents without dislocation of a hemiarthroplasty for a femoral neck fracture

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* Femoral neck fracture
* Treated with Hemiarthroplasty
* Through a posterolateral approach

Exclusion Criteria

* Direct lateral approach
Minimum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Sundsvall Hospital

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Arkan S Sayed-Noor, MD,PhD,FRCS

Role: PRINCIPAL_INVESTIGATOR

Orthopaedic department, Sundsvalls sjukhus, Landstinget Västernorrland

Locations

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Orthopaedic department, Sundsvall hospital

Sundsvall, Västernorrland County, Sweden

Site Status

Countries

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Sweden

References

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Madanat R, Makinen TJ, Ovaska MT, Soiva M, Vahlberg T, Haapala J. Dislocation of hip hemiarthroplasty following posterolateral surgical approach: a nested case-control study. Int Orthop. 2012 May;36(5):935-40. doi: 10.1007/s00264-011-1353-0. Epub 2011 Sep 20.

Reference Type BACKGROUND
PMID: 21931967 (View on PubMed)

Ninh CC, Sethi A, Hatahet M, Les C, Morandi M, Vaidya R. Hip dislocation after modular unipolar hemiarthroplasty. J Arthroplasty. 2009 Aug;24(5):768-74. doi: 10.1016/j.arth.2008.02.019. Epub 2008 Jun 13.

Reference Type BACKGROUND
PMID: 18555648 (View on PubMed)

Enocson A, Pettersson H, Ponzer S, Tornkvist H, Dalen N, Tidermark J. Quality of life after dislocation of hip arthroplasty: a prospective cohort study on 319 patients with femoral neck fractures with a one-year follow-up. Qual Life Res. 2009 Nov;18(9):1177-84. doi: 10.1007/s11136-009-9531-x. Epub 2009 Aug 28.

Reference Type BACKGROUND
PMID: 19714486 (View on PubMed)

Mukka S, Lindqvist J, Peyda S, Broden C, Mahmood S, Hassany H, Sayed-Noor A. Dislocation of bipolar hip hemiarthroplasty through a postero-lateral approach for femoral neck fractures: A cohort study. Int Orthop. 2015 Jul;39(7):1277-82. doi: 10.1007/s00264-014-2642-1. Epub 2015 Jan 6.

Reference Type RESULT
PMID: 25557759 (View on PubMed)

Other Identifiers

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SM

Identifier Type: -

Identifier Source: secondary_id

SMASN

Identifier Type: -

Identifier Source: org_study_id

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