Table 1.

Criteria for participants in the study

Inclusion criteria	Exclusion criteria
Age > 50	Rheumatoid arthritis
	BMI > 35
Able to tolerate spinal anesthesia	Previous knee surgery
	Malignancy
Clinical and radiological knee OA according to the ‘Ahlbäck’ classification system	Muscle disease
	Deep vein thrombosis or other blood coagulation disorders.
	Neuromuscular problems
	Symptomatic bilateral OA, with planned surgery of the contra lateral knee within 1 year
	Decline or unable to participate

OA, Osteoarthritis; BMI, Body Mass Index.