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Table 2 Summary of outcome measures to be collected in the trial with time-points

From: The efficacy of tourniquet assisted total knee arthroplasty on patient-reported and performance-based physical function: a randomized controlled trial protocol

Primary outcome

Data collection instrument (unit)

Collection time-point

  

Baseline

Post (days)

Post (months)

Function in daily living

KOOS

Pre

14

3,6,12

Secondary outcome

    

KOOS - 4 subscales

    

 Pain

KOOS

Pre

14

3,6,12

 Symptoms

KOOS

Pre

14

3,6,12

 Sport and recreation

KOOS

Pre

14

3,6,12

 Quality of life

KOOS

Pre

14

3,6,12

Questionnaire

    

 Global perceived effect

GPE

  

3,6,12

Bilateral physical Performance

    

 Knee range of motion (KneeROM)

Goniometer (°)

Pre

3,14

3,6

 30-s chair-stand test (30s CRT)

(Number)

Pre

3,14

3,6

 20-m self- and fast-paced walk test (20mWT)

Stopwatch (s)

Pre

3,14

3,6

 Timed up-and-go test (TUG)

Stopwatch (s)

Pre

3,14

3,6

Explorative outcomes

    

Mechanical muscle function

    

 Maximal isometric knee strength (iMVC)

Strain-gauge (Nm)

Pre

 

3,6

 Dynamic leg extension power

(W)

Pre

 

3,6

 Rate of force development (RFD)

(Nm/sec)

Pre

 

3,6

 Surface electromyography (EMG)

Myon (mV)

Pre

 

3,6

 Force steadiness

(Nm)

Pre

 

3,6

Unilateral physical performance

    

 30-s single-leg knee bending (30s-KneeBend)

(Number)

Pre

 

3,6

Pain

    

 Self-reported use of pain medication

(Quantity)

Pre

1-14

 

 Self-reported pain (VAS)

VAS

Pre

1-14

 

Biopsies

    

 Muscle biopsy

 

Prior to applying and removal of the tourniquet