Table 1

The Population, Intervention, Comparison, Outcome, Study design process24

Population or participants and conditions of interestPatients with OA or AVN of the knee (any age, gender and severity)
Comparisons or control groupsFor comparison between limbs of the same subject: asymptomatic contralateral hip and knee
For comparison between patients and heathy individuals: asymptomatic control subjects
Outcomes of interestMuscle strength of hip abductors
Study designsAny study design, published studies, conference abstracts to be considered
  • AVN, avascular necrosis; OA, osteoarthritis; TKA/UKA, total or unicompartmental knee arthroplasty.