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Knee Muscle Force Recovery After Minimally Invasive Surgery (MIS) Total Knee Replacement (TKR) (MISTKR)

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: NCT00912769
Recruitment Status : Completed
First Posted : June 3, 2009
Last Update Posted : June 3, 2009
Information provided by:
Far Eastern Memorial Hospital

Brief Summary:
To compare muscle torque recovery between patients under subvastus approach and those under midvastus approach after total knee replacement

Condition or disease
Total Knee Replacement Approach Muscle Torque

Detailed Description:
Total knee Arthroplasty is a common operated surgery in each hospitals, and a lots of patients benefit from this surgery. Traditionally the frequently used surgical approach is parapatellar approach. However, recently the subvastus and midvastus approach has gained a world-wide population. These two methods had less damage to the quadriceps tendon and theoretically should have better post-operative muscle power recovery, less lateral retinaculum release because of better patellar tracking. The only differences between these two approaches are that the midvastus approach will split the vastus medialis muscle and denervation may occur. In this study we will use HSS or KSS functional score and Cybex dynamometer to evaluate the functional recovery, and use Merchant's view radiography to evaluate the result of patellar tracking. The follow-up period will not be limited and we will use mixed-model statistic's random effect to gain the natural history of muscle power recovery, which will become the base of other study. We can also compare the difference of results between PS type and CR type and different surgical approach. The natural history of the knee score will also be obtained.

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Study Type : Observational
Actual Enrollment : 30 participants
Observational Model: Cohort
Time Perspective: Retrospective
Official Title: Outcome and Benefit After Total Knee Arthroplasty: Natural History of Muscle Power Recovery and Difference Between Different Surgical Approach
Study Start Date : October 2003
Actual Primary Completion Date : March 2004
Actual Study Completion Date : March 2004

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Knee Replacement

subvastus approach/ midvastus approach
subvastus: vastus medialis oblique was not cut during operation midvastus: vastus medialis oblique was cut during operation
Knee extension/ flexion isometric and isokinetic performance of all cases were tested using Cybex

Information from the National Library of Medicine

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Ages Eligible for Study:   50 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients after total knee replacement without severe systemic disorders

Inclusion Criteria:

  • Patients after subvastus approach or midvastus approach total knee replacement

Exclusion Criteria:

  • patients with severe hypertension, heart disease or other problems which negatively influence the security of muscle test

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): NCT00912769

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Far Eastern Memorial Hospital
Pan-Ciao, Taipei, Taiwan, 220
Sponsors and Collaborators
Far Eastern Memorial Hospital
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Responsible Party: Dr. Chih-Hung Chang, Head of Division of Orthopedics, Far Eastern Memorial Hospital Identifier: NCT00912769    
Other Study ID Numbers: 97025
First Posted: June 3, 2009    Key Record Dates
Last Update Posted: June 3, 2009
Last Verified: June 2009
Keywords provided by Far Eastern Memorial Hospital:
Total knee replacement