Skip to main content
OpenTrials
Completed

NCT Number: NCT02131987

Radiological Riskfactors for Dislocation of Hip Hemiarthroplasty

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.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Dislocation Femoral Fractures Femoral Neck Fracture Femoral Neck Fractures Fractures, Bone Hip Fractures Hip Injuries Joint Diseases Joint Dislocations Leg Injuries Musculoskeletal Diseases Wounds and Injuries

Age range

60 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Orthopaedic department, Sundsvall hospital

Sundsvall, Västernorrland County, 851 86, Sweden

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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

Exclusion criteria

  • Direct lateral approach

Treatment and study plan

Primary outcomes

  1. Femoral offset

    Time frame: 6 months up to 7 years

    The femoral offset is measured on the postoperative X-ray. The result are compared between the groups of dislocated and non-dislocated patients.

  2. Leg length difference

    Time frame: 6 months to 7 years

    Leg length difference is measured on the postoperative X-ray. The result are compared between the groups of dislocated and non-dislocated patients.

  3. Wiberg angle

    Time frame: 6 months to 7 years

    Wiberg angle is measured on the postoperative X-ray. The result are compared between the groups of dislocated and non-dislocated patients.

Secondary outcomes

  1. 1 year mortality

    Time frame: one year

Sponsors and collaborators

Lead sponsor

Sundsvall Hospital

Other

Registry information

Official study title

Radiological Riskfactors for Dislocation of Hip Hemiarthroplasty Through a Posterolateral Approach as Treatment for Femoral Neck Fracture

Acronym: RRDHHR

Important dates

Study start
2006
Primary completion
2013
Study completion
2013
First posted
May 6, 2014
Registry last updated
Oct 29, 2015

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.