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

Outcome and Benefit After Total Knee Arthroplasty: Natural History of Muscle Power Recovery and Difference Between Different Surgical Approach

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

Study Overview

• Status: Completed
• Conditions: 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.

• Study Type: Observational
• Enrollment (Actual): 30

Contacts and Locations

Study Locations

• Taiwan
  • Taipei
    • Pan-Ciao, Taipei, Taiwan, 220
      • Far Eastern Memorial Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 50 years to 80 years (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Patients after total knee replacement without severe systemic disorders

Description

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

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

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

Collaborators and Investigators

• Sponsor: Far Eastern Memorial Hospital

Study record dates

Study Major Dates

• Study Start: October 1, 2003
• Primary Completion (ACTUAL): March 1, 2004
• Study Completion (ACTUAL): March 1, 2004

Study Registration Dates

• First Submitted: June 2, 2009
• First Submitted That Met QC Criteria: June 2, 2009
• First Posted (ESTIMATE): June 3, 2009

Study Record Updates

• Last Update Posted (ESTIMATE): June 3, 2009
• Last Update Submitted That Met QC Criteria: June 2, 2009
• Last Verified: June 1, 2009

More Information

Terms related to this study

• Keywords: Total knee replacement; Isokinetic; Quadriceps; Subvastus; Midvastus
• Other Study ID Numbers: 97025