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CompletedNCT00426907Updated Apr 10, 2015

Weightbearing After High Tibial Osteotomy

A Phase 4 interventional study of Unlimited postoperative weightbearing in Osteoarthritis, Knee, sponsored by Northern Orthopaedic Division, Denmark. Completed at 1 site in Denmark. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2015-04-10.

Sponsored by Northern Orthopaedic Division, Denmark · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
20
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

In this project we want investigate the clinical results after different rehabilitation regimens(Limited or unlimited weightbearing after surgery) in Open-wedge High Tibial Osteotomies.

The hypothesis is that unlimited weightbearing is beneficial for the healing and rehabilitation.

Read the detailed description

In the treatment of osteoarthritis of the medial compartment of the knee, Open wedge high tibial osteotomy is a good choice of treatment for the young and active patient.

However it leaves an open gap which has to be filled with a bone substitute and requires stable fixation.

Different rehabilitation-regimens are described, many advocating a period of partial weight-bearing for a period after surgery.

Results from biomechanical studies suggest that immediate full weight-bearing is safe, enabling earlier mobilisation without compromising safe solid healing.

The aim of the present study is to evaluate whether there is any difference in clinical outcome, correction, stability and healing in open-wedge osteotomies (osteosynthesis with the Dynafix® system (EBI)) after 2 different rehabilitation regimens: Limited weight-bearing (20 kg) for 6 weeks, and unrestricted weight-bearing.

The investigation is performed as a randomised prospective clinical trial including 20 patients with a planned 2 years follow-up period.

Clinical outcome is evaluated with: Hospital of special surgery score, KOOS, SF 12 and Lysholm score.

Routine standing x-rays is performed. Stability of the osteotomy is assessed with Roentgen Stereophotogrammetric Analysis (RSA) that provides the opportunity of exact 3-dimensional measuring of eventual loss of correction.

02

Conditions studied

  • Osteoarthritis, Knee

Keywords

  • Osteoarthritis, Knee
  • Osteotomy
  • Healing
  • Rehabilitation
  • Roentgen Stereometric Analysis
03

In context

Osteoarthritis

4,398 studies on the registry are indexed under Osteoarthritis; 582 are open to participants now.

This study's enrollment of 20 is below the median of 70 across 3,440 interventional studies indexed under Osteoarthritis.

Browse Osteoarthritis studies →

Lead sponsor

Northern Orthopaedic Division, Denmark is the lead sponsor of 61 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Signed informed consent
  • Osteoarthritis of medial compartment of the knee, Ahlbäck gr. 1-2
  • Varus deformity

Exclusion criteria

Exclusion Criteria:

  • Prednisolone treatment.
  • NSAID treatment.
  • BMI > or = 35.
  • Previous surgery in lateral knee compartment.
  • Secondary Arthrosis following fracture(s) of the tibial condyle(s).
  • Lack of informed consent.
  • Correction >12,5 mm
  • Peroperative displaced fracture of lateral bony hinge.
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
20 participants (actual)

Study arms

  • Experimental
    1

    Full postoperative weightbearing

    Procedure: Unlimited postoperative weightbearing

  • Active comparator
    2

    Partial weightbearing 6 weeks postoperative

    Procedure: Unlimited postoperative weightbearing

Interventions

  • ProcedureUnlimited postoperative weightbearing

    Unlimited postoperative weightbearing

06

What researchers measure

Primary outcomes

  1. Migration in mm measured with RSA (Roentgen Stereometric Analysis):

    Time frame: Postoperative, at 3 month, 1 and 2 years.

Secondary outcomes

  1. Clinical scores including range of Movement and muscular status at 6 weeks, 3 month, 1 and 2 years postoperative.

    Time frame: Postoperative, at 3 month, 1 and 2 years.

  2. Hip-Knee-Ankle axis at 3 month, 1 and 2 years postoperative.

    Time frame: Postoperative, at 3 month, 1 and 2 years.

  3. Bone Mineral Density (DEXA-scan) pre-op., Post.-op, at 6 weeks, 3 months and 1 and 2 years postop.

    Time frame: Postoperative, at 3 month, 1 and 2 years.

07

Study locations

1 site
  • Northern Orthopaedic Division, Klinik Farsoe and Aarhus University Hospital
    Farsoe, Northern Jutland, Denmark
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 10, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00426907
Lead sponsor
Northern Orthopaedic Division, Denmark
Responsible party
Sponsor
First posted
Jan 25, 2007
Start date
Jan 2007
Primary completion
Sep 2014
Completion
Sep 2014
Last update
Apr 10, 2015

Study contacts

Thomas Lind-Hansen, MD
principal investigator · Orthopaedic Division, Northern Denmark Region

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2015. You cannot join it, but the record below documents what was studied.

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