Table 3 Indicators for Monitoring and Discriminating Swelling during Home-based Rehabilitation after TKA

1. Inflammation response

1.1 Knee joint skin temperature

1.2 Body mass index (BMI)

1.3 History of underlying diseases

1.3.1 Diabetes mellitus

1.4 Medication usage

1.4.1 Antibiotics

1.4.2 Hormones

1.4.3 NSAIDs

1.5 Cold therapy

1.5.1 Duration

2. Poor venous return

2.1 Pain in different parts of the lower limbs

2.1.1 Pain score

2.1.2 Onset of pain

2.1.3 Mode of pain occurrence

2.2 Deep venous thrombosis risk score

2.3 Skin temperature

2.3.1 Knee joint

2.3.2 Foot dorsum

2.4 History of underlying diseases

2.4.1 Lower extremity venous disease

2.4.2 Cardiovascular disease

2.4.3 Disease-related limb paralysis

2.4.4 Lymphatic system disease

2.4.5 Hematologic disorders

2.5 Medication usage

2.5.1 Anticoagulant

2.6 Compression therapy

2.6.1 Method

2.6.2 Duration per day

2.7 Ankle pump

2.7.1 Frequency

2.8 Body position

2.8.1 Duration in supine

2.8.2 Duration in semi-recumbent

2.8.3 Duration in sitting

2.8.4 Duration in standing

2.8.5 Duration of walking

3 Joint hematoma

3.1 Medication usage

3.1.1 Anticoagulant

3.1.2 Hemostatic

3.2 Bleeding

3.2.1 Location and area

3.3 Wound drainage

3.4 Tourniquet usage

3.4.1 Pressure

3.4.2 Duration

3.5 Ice therapy

3.5.1 Duration

3.6 Knee ROM

4 Muscle injury and healing

4.1 Quadriceps muscle strength

5 General Category

5.1 Lower limb circumference

5.1.1 20 cm above the patella

5.1.2 15 cm above the patella

5.1.3 10 cm above the patella

5.1.4 5 cm above the patella

5.1.5 Knee joint

5.1.6 Thickest part of the calf

5.1.7 Ankle

5.2 History of underlying diseases

5.2.1 Kidney disease

5.2.2 Liver disease

5.3 Medication usage

5.3.1 Anti-swelling medication