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Published in: BMC Musculoskeletal Disorders 1/2012

Open Access 01-12-2012 | Research article

Early functional results after Hemiarthroplasty for femoral neck fracture: a randomized comparison between a minimal invasive and a conventional approach

Authors: Felix Renken, Svenja Renken, Andreas Paech, Michael Wenzl, Andreas Unger, Arndt P Schulz

Published in: BMC Musculoskeletal Disorders | Issue 1/2012

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Abstract

Background

A minimal invasive approach for elective hip surgery has been implemented in our institution in the past. It is widely hypothesized that implanting artificial hips in a minimal invasive fashion decreases surgical trauma and is helpful in the rehabilitation process in elective hip surgery. Thereby geriatric patients requiring emergency hip surgery also could theoretically benefit from a procedure that involves less tissue trauma.

Methods

Sixty patients who sustained a fractured neck of femur were randomly assigned into two groups. In the minimal invasive arm, the so called “direct anterior approach” (DAA) was chosen, in the conventional arm the Watson-Jones-Approach was used for implantation of a bipolar hemi-arthroplasty.
Primary outcome parameter was the mobility as measured by the four-item-Barthel index. Secondary outcome parameters included pain, haemoglobin-levels, complications, duration of surgery, administration of blood transfusion and external length of incision. Radiographs were evaluated.

Results

A statistically significant difference (p = 0,009) regarding the mobility as measured with the four-item Barthel index was found at the 5th postoperative day, favouring the DAA. Evaluation of the intensity of pain with a visual analogue scale (VAS) showed a statistically significant difference (p = 0,035) at day 16. No difference was evident in the comparison of radiographic results.

Conclusions

Comparing two different approaches to the hip joint for the implantation of a bipolar hemi-arthroplasty after fractured neck of femur, it can be stated that mobilization status is improved for the DAA compared to the WJA when measured by the four-item Barthel index, there is less pain as measured using the VAS. There is no radiographic evidence that a minimal invasive technique leads to inferior implant position.
Level of Evidence: Level II therapeutic study.
Appendix
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Metadata
Title
Early functional results after Hemiarthroplasty for femoral neck fracture: a randomized comparison between a minimal invasive and a conventional approach
Authors
Felix Renken
Svenja Renken
Andreas Paech
Michael Wenzl
Andreas Unger
Arndt P Schulz
Publication date
01-12-2012
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2012
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/1471-2474-13-141

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