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Completed

NCT Number: NCT01122017

A Modified (Retro-Tubercle) Opening Wedge High Tibial Osteotomy Versus the Conventional Technique

The present study was conducted among a group of Iranian patients suffering from varus knee in order to compare advantages and disadvantages of ROWHTO (Retro-Tubercle Opening Wedge High Tibial Osteotomy) technique when compared with previously described approaches of opening-wedge osteotomy.

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Key information

Conditions

Genu Varum Bone Diseases Musculoskeletal Diseases

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Shahid Beheshti University of Medical Sciences

Tehran, Tehran Province, Iran

About this study

There are various methods for correcting varus deformity; therefore the best surgical method must be individualized. We concluded that in a varus knee where only correction in the coronal plane without patella infra, changes in Q- angle, tibial plateau inclination is all that is needed, a retro- tubercle medial opening- wedge osteotomy is the preferred approach.

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • symptomatic varus deformity of the knee with 2 or more degrees of anatomical axis varus without ligament injury

Exclusion criteria

  • fractures through compartments of the knee or the patella
  • osteoarthritis other than in the medial compartment
  • 10 degrees or more extension lag
  • tibial malrotation

Treatment and study plan

Retro-Tubercle Opening-Wedge High Tibial Osteotomy

Procedure

Retro-Tubercle Opening-Wedge High Tibial Osteotomy (ROWHTO) is among the latest approaches for the treatment of varus deformity of knee.

Primary outcomes

  1. The proportion of patellar length (in mm)to the patellar tendon length (in mm)

    Time frame: up to 13 months

    The length of the patella (in its longest diameter on a lateral x-ray) to the length of the patellar tendon is referred as Insall-Salvati index

  2. The proportion of patellar articular surface length (in mm)to the patella-tibial plateau distance (in mm)

    Time frame: up to 13 months

    The length of the articular surface of the patella to the distance from the patella to the tibial plateau is referred as Blackburne-Peel index.

Secondary outcomes

  1. Quadriceps angle in degree

    Time frame: up to 13 months

    The angle between the quadriceps vector and the line of pull of the patellar tendon from the centre of the patella to the tibial tubercle.

  2. Inclination of proximal tibial plateau in degree

    Time frame: up to 13 months

    The angle between articular surface and lateral longitudinal axis of tibia.

Sponsors and collaborators

Lead sponsor

Shahid Beheshti University of Medical Sciences

Other

Registry information

Important dates

Study start
2006
Primary completion
2008
Study completion
2008
First posted
May 12, 2010
Registry last updated
May 13, 2010

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.

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