Comparison of Functional Recovery After Total Knee Arthroplasty Between Low Phase Angle and High Phase Angle Group

Condition(s) studied

Study summary

The goal of this observational study is to compare the functional outcome of patients with end-stage knee osteoarthritis (OA) before and after total knee arthroplasty based on the phase angle level.

The main questions it aims to answer are:

* Do patients with low phase angle show worse functional recovery after total knee arthroplasty compared to those with high phase angle?
* Is postoperative physical function associated with preoperative phase angle level?

Researchers will compare postoperative physical function and muscle strength between the low and high phase angle groups to determine whether a low phase angle is associated with poorer functional recovery.

Participants will:

Perform physical function tests, isokinetic strength assessments, and bioelectrical impedance analysis before and three months after surgery.

Eligibility

Primary outcome measure(s)

• Timed up and go test (TUG) — Baseline and 3 months after surgery
  Researchers ask patients to rise from a seated position, walk a distance of 3 m, turn around, return to the chair, and sit back. The average time of three trials was recorded as a result
• 10 meter walk test (10MWT) — Baseline and 3 months after surgery
  Patients are instructed to walk 14 m, including 2 m at both ends for acceleration and deceleration, at their comfortable speed. Gait speed was calculated by dividing the 10m distance by the time taken.
• Berg balance scale (BBS) — Baseline and 3 months after surgery
  Patients are asked to perform 14 tasks regarding the static and dynamic balance of patients. Each task was rated on a five-point scale from 0 to 4, with a total score of 56.

Trial sites (1)

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