Weightbearing After High Tibial Osteotomy

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00426907
Recruitment Status : Completed
First Posted : January 25, 2007
Last Update Posted : April 10, 2015
Information provided by (Responsible Party):
Northern Orthopaedic Division, Denmark

Brief 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.

Condition or disease Intervention/treatment Phase
Osteoarthritis, Knee Procedure: Unlimited postoperative weightbearing Phase 4

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.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 20 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Weightbearing After Proximal Open-wedge Tibial Osteotomy - a Clinical, Randomized RSA-study.
Study Start Date : January 2007
Actual Primary Completion Date : September 2014
Actual Study Completion Date : September 2014

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: 1
Full postoperative weightbearing
Procedure: Unlimited postoperative weightbearing
Unlimited postoperative weightbearing

Active Comparator: 2
Partial weightbearing 6 weeks postoperative
Procedure: Unlimited postoperative weightbearing
Unlimited postoperative weightbearing

Primary Outcome Measures :
  1. Migration in mm measured with RSA (Roentgen Stereometric Analysis): [ Time Frame: Postoperative, at 3 month, 1 and 2 years. ]

Secondary Outcome Measures :
  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. ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   18 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   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:

  • 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.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00426907

Northern Orthopaedic Division, Klinik Farsoe and Aarhus University Hospital
Farsoe, Northern Jutland, Denmark
Sponsors and Collaborators
Northern Orthopaedic Division, Denmark
Principal Investigator: Thomas Lind-Hansen, MD Orthopaedic Division, Northern Denmark Region

Responsible Party: Northern Orthopaedic Division, Denmark Identifier: NCT00426907     History of Changes
Other Study ID Numbers: ON-04-016-TLH
First Posted: January 25, 2007    Key Record Dates
Last Update Posted: April 10, 2015
Last Verified: April 2015

Keywords provided by Northern Orthopaedic Division, Denmark:
Osteoarthritis, Knee
Roentgen Stereometric Analysis

Additional relevant MeSH terms:
Osteoarthritis, Knee
Joint Diseases
Musculoskeletal Diseases
Rheumatic Diseases