Table 1.

Inclusion/Exclusion criteria description

	Inclusion criteria	Exclusion criteria
1	Age range: 50–85 years	Previous corrective osteotomy on the affected lower limb
2	Severe radiographic primary osteoarthritis (Kellgren–Lawrence grade 3 and grade 4)	Post-traumatic arthritis
3	Patients scheduled for a primary total knee arthroplasty	Severe pre-operative varus–valgus deformity (Hip Knee Ankle angle > 10°)
4		Body Mass Index > 40 kg/m2
5		Rheumatoid arthritis
6		Chronic inflammatory joint diseases
7		Patients with a pre-pathological abnormal gait (amputated, neuromuscular disorders, poliomyelitis, developmental dysplasia of the hip)
8		Severe ankle osteoarthritis (Kellgren–Lawrence grade 3 and grade 4)
9		Severe hip osteoarthritis (Kellgren–Lawrence grade 3 and grade 4)
10		Previous total hip or ankle replacement
11		Unwillingness to take part in this study
12		Incomplete clinical or kinematical assessment
13		Inability to perform the motor tasks