The Influence of Leg Length Discrepancy After Total Hip Arthroplasty on Function and Quality of Life

NCT ID: NCT02275494

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

174 participants

Study Classification

OBSERVATIONAL

Study Start Date

2010-09-30

Study Completion Date

2013-04-30

Brief Summary

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Leg length discrepancy (LLD) is a complication of THA and may result in patient dissatisfaction, gait disorder, greater trochanter pain, low back pain. In the literature, LLD is reported to vary widely among studies e.g. 6 to 35 mm. However, the threshold at which a LLD is clinically important is still a matter of debate. The aim of this study was to determine the influence of non-corrected LLD after THA on patients' reported hip function and quality of life. This prospective cohort study was conducted at Sundsvall Teaching Hospital in Sweden after it was approved by the regional ethics committee at Umeå University (No. 07-052M and No. 12-287-32M). Between September 2010 and April 2013, all patients with unilateral primary osteoarthritis (OA) treated with THA were considered for inclusion. Informed consent was obtained from all patients. Patients with secondary OA, previous spinal, pelvic, or lower limb injuries or fractures were excluded.

The primary outcome measure was the Western Ontario and McMaster Universities Osteoarthritis (WOMAC) Index that measures functional outcome (ref). The secondary outcome measure was the EQ-5D and visual analogue scale (VAS) scale. Patients were assessed preoperatively and at follow-up at 1 year postoperatively. The posterolateral approach was used in all operations. LLD was measured on the postoperative x-rays. patients were divided into three groups: shortening group where the operated leg was more than 5mm shorter compared with the contralateral side, the restoration control group where the operated leg was within 5mm shortening and 9mm lengthening compared with the contralateral side, and the lengthening group where the operated leg became more than 9mm longer compared with the contralateral side.

Detailed Description

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Conditions

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Osteoarthritis Leg Length Difference Hip Arthroplasty

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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shortening group

Shortening group where the operated leg was more than 5mm shorter compared with the contralateral side

Total hip arthroplasty

Intervention Type PROCEDURE

Cemented or uncemented total hip arthroplasty. No other intervention than observing patients operated according to routine practise at an orthopaedic department.

Restoration group

the restoration control group where the operated leg was within 5mm shortening and 9mm lengthening compared with the contralateral side

Total hip arthroplasty

Intervention Type PROCEDURE

Cemented or uncemented total hip arthroplasty. No other intervention than observing patients operated according to routine practise at an orthopaedic department.

Lengthening group

The lengthening group where the operated leg became more than 9mm longer compared with the contralateral side.

Total hip arthroplasty

Intervention Type PROCEDURE

Cemented or uncemented total hip arthroplasty. No other intervention than observing patients operated according to routine practise at an orthopaedic department.

Interventions

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Total hip arthroplasty

Cemented or uncemented total hip arthroplasty. No other intervention than observing patients operated according to routine practise at an orthopaedic department.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Unilateral primary osteoarthritis (OA) treated with THA were considered for inclusion.

Exclusion Criteria

* Secondary OA.
* Previous spinal, pelvic, or lower limb injuries or fractures.
* Bilateral coxarthrosis.
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

References

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Ogawa K, Kabata T, Maeda T, Kajino Y, Tsuchiya H. Accurate leg length measurement in total hip arthroplasty: a comparison of computer navigation and a simple manual measurement device. Clin Orthop Surg. 2014 Jun;6(2):153-8. doi: 10.4055/cios.2014.6.2.153. Epub 2014 May 16.

Reference Type BACKGROUND
PMID: 24900895 (View on PubMed)

Whitehouse MR, Stefanovich-Lawbuary NS, Brunton LR, Blom AW. The impact of leg length discrepancy on patient satisfaction and functional outcome following total hip arthroplasty. J Arthroplasty. 2013 Sep;28(8):1408-14. doi: 10.1016/j.arth.2012.12.009. Epub 2013 Mar 16.

Reference Type BACKGROUND
PMID: 23507069 (View on PubMed)

McWilliams AB, Grainger AJ, O'Connor PJ, Redmond AC, Stewart TD, Stone MH. A review of symptomatic leg length inequality following total hip arthroplasty. Hip Int. 2013 Jan-Feb;23(1):6-14. doi: 10.5301/HIP.2013.10631.

Reference Type BACKGROUND
PMID: 23397200 (View on PubMed)

Bertz A, Indrekvam K, Ahmed M, Englund E, Sayed-Noor AS. Validity and reliability of preoperative templating in total hip arthroplasty using a digital templating system. Skeletal Radiol. 2012 Sep;41(10):1245-9. doi: 10.1007/s00256-012-1431-4. Epub 2012 May 16.

Reference Type BACKGROUND
PMID: 22588597 (View on PubMed)

Plaass C, Clauss M, Ochsner PE, Ilchmann T. Influence of leg length discrepancy on clinical results after total hip arthroplasty--a prospective clinical trial. Hip Int. 2011 Jul-Aug;21(4):441-9. doi: 10.5301/HIP.2011.8575.

Reference Type BACKGROUND
PMID: 21818744 (View on PubMed)

O'Brien S, Kernohan G, Fitzpatrick C, Hill J, Beverland D. Perception of imposed leg length inequality in normal subjects. Hip Int. 2010 Oct-Dec;20(4):505-11. doi: 10.1177/112070001002000414.

Reference Type BACKGROUND
PMID: 21157756 (View on PubMed)

Mahmood SS, Mukka SS, Crnalic S, Sayed-Noor AS. The Influence of Leg Length Discrepancy after Total Hip Arthroplasty on Function and Quality of Life: A Prospective Cohort Study. J Arthroplasty. 2015 Sep;30(9):1638-42. doi: 10.1016/j.arth.2015.04.012. Epub 2015 Apr 11.

Reference Type RESULT
PMID: 25922312 (View on PubMed)

Other Identifiers

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Sarwar-2

Identifier Type: -

Identifier Source: org_study_id

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