A 72-year old male was referred to our clinic because of righthip pain exacerbated with weight bearing. He had a past medical history of mild hyperuricemia and bilateral hip osteoarthritis; he was medicated with occasional bromazepam and paracetamol as needed. He did not complain about falls, gait or strength impairment. He lived with his wife and both manage daily house tasks; he passed most of his time watching television and did not do any physical activity. His physical performance showed: usual gait-speed in a 4 m course: 0.43 m/s; handgrip strength: 14.5 kg; short physical performance battery: 7 (chair stand: 1; balance: 4; gait-speed: 2); timed get-up-and-go test: 18.57 s. He was 1.66 m tall and weighted 74.7 kg (BMI: 27.1 kg/m); his skeletal muscle mass index (appendicular skeletal muscle mass/height) using bioimpedance analysis (InBody 720, Biospace Co, Ltd, Seoul, South Korea) was 6.8 kg/m (normal: > 8.87 kg/m) and body fat was 37.2%. He underwent a hip magnetic resonance imaging (MRI) which report mentioned only ‘‘grade 3 hip osteoarthritis’’. Analyzing the images, a marked decrease of muscle volume, low muscle density (which represents intramuscular fat and connective tissue infiltration), intermuscular fat and increase of fat mass were seen (Fig. 1). The diagnosis of sarcopenia was made and a protein enriched diet and exercise program were prescribed. In 3, 6 and 12-month follow-up appointments the patient did not change his physical activity. No significant changes in his physical performance or body composition were noticed.