Assessment of Foot Alignment and Pressure After Correction of Varus Knee by High Tibial Osteotomy or Total Knee Replacement

NCT ID: NCT05314972

Last Updated: 2022-04-07

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

UNKNOWN

Total Enrollment

200 participants

Study Classification

OBSERVATIONAL

Study Start Date

2022-05-01

Study Completion Date

2023-03-01

Brief Summary

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This study evaluated the change in foot alignment after TKA or HTO by prospectively analyzing the correlation between the knee joint and the foot deformity, the post-operative improvement in the foot deformity, and the long-term post-operative changes in foot alignment.

Detailed Description

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The mechanical alignment of the lower extremity is an important consideration in the long-term outcome following total knee arthroplasty (TKA) or high tibial osteotomy (HTO) . Alignment between the hip and the ankle through the knee joint has been used in determining coronal alignment, based on the assumption that weight-bearing forces pass through the centre of the knee joint during neutral mechanical. However, the weight-bearing vector can be affected by hindfoot and midfoot alignment because load is transmitted not from the ankle joint, but from the ground reaction point. Thus hindfoot alignment after knee correction may critically affect the longevity of the prosthesis

Most patients with some degree of knee joint deformity, which in turn may be associated with a deformity of the foot. In fact, an association between varus alignment of the knee joint and valgus alignment of the foot in osteoarthritis patients has been reported. Because the subtalar joint compensates for the knee joint deformity , correction of the deformity after TKA or HTO can affect foot alignment. Improvements in midfoot and hindfoot alignment have been noted in patients with osteoarthritis after correction of deformity. However, foot valgus may also persist, with little improvement after knee correction.

Conditions

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Varus Deformity

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

* all varus aligned knee admitted to Assiut University Hospitals (Total Knee Arthroplasty or High Tibial Osteotomy) .

Exclusion Criteria

* patient with prior surgery of knee or foot . -secondary osteoarthritis. -valgus knee.
Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Assiut University

OTHER

Sponsor Role lead

Responsible Party

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Abdelrhman Abdelaziz Khalaf Mohamed

principal investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Central Contacts

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abdelrhman abdelaziz khalaf

Role: CONTACT

01096836732

Wael yossef El-adly

Role: CONTACT

01224265850

References

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Bargren JH, Blaha JD, Freeman MA. Alignment in total knee arthroplasty. Correlated biomechanical and clinical observations. Clin Orthop Relat Res. 1983 Mar;(173):178-83.

Reference Type BACKGROUND
PMID: 6825330 (View on PubMed)

Fang DM, Ritter MA, Davis KE. Coronal alignment in total knee arthroplasty: just how important is it? J Arthroplasty. 2009 Sep;24(6 Suppl):39-43. doi: 10.1016/j.arth.2009.04.034. Epub 2009 Jun 24.

Reference Type BACKGROUND
PMID: 19553073 (View on PubMed)

Jeffery RS, Morris RW, Denham RA. Coronal alignment after total knee replacement. J Bone Joint Surg Br. 1991 Sep;73(5):709-14. doi: 10.1302/0301-620X.73B5.1894655.

Reference Type BACKGROUND
PMID: 1894655 (View on PubMed)

Longstaff LM, Sloan K, Stamp N, Scaddan M, Beaver R. Good alignment after total knee arthroplasty leads to faster rehabilitation and better function. J Arthroplasty. 2009 Jun;24(4):570-8. doi: 10.1016/j.arth.2008.03.002. Epub 2008 May 19.

Reference Type BACKGROUND
PMID: 18534396 (View on PubMed)

Cho WS, Cho HS, Byun SE. Changes in hindfoot alignment after total knee arthroplasty in knee osteoarthritic patients with varus deformity. Knee Surg Sports Traumatol Arthrosc. 2017 Nov;25(11):3596-3604. doi: 10.1007/s00167-016-4278-8. Epub 2016 Aug 16.

Reference Type BACKGROUND
PMID: 27527338 (View on PubMed)

Norton AA, Callaghan JJ, Amendola A, Phisitkul P, Wongsak S, Liu SS, Fruehling-Wall C. Correlation of knee and hindfoot deformities in advanced knee OA: compensatory hindfoot alignment and where it occurs. Clin Orthop Relat Res. 2015 Jan;473(1):166-74. doi: 10.1007/s11999-014-3801-9.

Reference Type BACKGROUND
PMID: 25024033 (View on PubMed)

Hara Y, Ikoma K, Arai Y, Ohashi S, Maki M, Kubo T. Alteration of hindfoot alignment after total knee arthroplasty using a novel hindfoot alignment view. J Arthroplasty. 2015 Jan;30(1):126-9. doi: 10.1016/j.arth.2014.07.026. Epub 2014 Jul 25.

Reference Type BACKGROUND
PMID: 25155238 (View on PubMed)

Mullaji A, Shetty GM. Persistent hindfoot valgus causes lateral deviation of weightbearing axis after total knee arthroplasty. Clin Orthop Relat Res. 2011 Apr;469(4):1154-60. doi: 10.1007/s11999-010-1703-z. Epub 2010 Dec 1.

Reference Type BACKGROUND
PMID: 21120711 (View on PubMed)

Other Identifiers

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foot alignment and pressure

Identifier Type: -

Identifier Source: org_study_id

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