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Effect of RO On GB During TKR Severe Varus Deformity

Effect Of Reduction Osteotomy On Gap Balancing During Total Knee Replacement For Severe Varus Deformity

Status
UNKNOWN
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03065738
Enrollment
30
Registered
2017-02-28
Start date
2017-01-01
Completion date
2018-02-01
Last updated
2017-03-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Genu Varum, Knee Osteoarthritis

Keywords

reduction osteotomy, knee arthroplasty

Brief summary

Effect Of Reduction Osteotomy On Gap Balancing During Total Knee Replacement For Severe Varus Deformity

Detailed description

Severe varus deformity with a tibio femoral angle of 15° or more as measured on full-length weight-bearing radiographs necessitates extensive release of the medial structures to gain neutral limb alignment during total knee arthroplasty (TKA). progressive releases of the medial structures are performed until medial and lateral envelopes are equally balanced. This technique, however, faces a risk of over-release and subsequent instability, ultimately resulting in the use of a thicker polyethylene insert or even a constrained-type prosthesis. Reduction osteotomy is known as a soft tissue-sparing technique for soft tissue balancing, and it is capable of reducing the amount of release required to balance the knee and of preventing over release of medial structures. Dixon et al . and Mullaji et al . proposed the effectiveness of down-sizing the tibial component in the case of knees with severe varus deformity Aim of the work: Assess the effect of reduction osteotomy on gab balancing during total knee arthroplasty for severe varus deformity -What is the amount of deformity correction achieved with reduction osteotomy during TKA in varus knees? - What is the correlation of amount of deformity correction achieved to the amount of bone osteotomized and the degree of varus deformity?

Interventions

OTHERtibial reduction osteotomy in total knee replacement

reduction osteotomy :downsizing of tibial tray with lateralization

Sponsors

Assiut University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
55 Years to 90 Years
Healthy volunteers
Yes

Inclusion criteria

* Patients with severe varus deformity more than 15 degrees (long film-mechanical axis) * Patients with bone defect of medial tibial condyle

Exclusion criteria

* Patients with extra-articular deformity * Patients with valgus deformity

Design outcomes

Primary

MeasureTime frameDescription
HKA angleimmediate post operativestanding A.P radiograph

Secondary

MeasureTime frameDescription
functional outcome by knee society scoreone year follow upby knee society score

Countries

Egypt

Contacts

Primary ContactAlaa Safwat, Msc
alaasafwat84@yahoo.com002-01067655744
Backup ContactYasser Khalifa, MD
Ykhalifa67@hotmail.co002-01006134669

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026