Bone and Joint Day

What Is Bone and Joint Day?

October 8th is Bone and Joint Day (骨と関節の日) in Japan, established to coincide with the international Bone and Joint Decade — a WHO-endorsed global health campaign running from 2000 to 2010 and extended in many countries beyond. Designated by the Japan Orthopaedic Association and related medical organisations, the day raises public awareness of musculoskeletal health: the health of bones, cartilage, joints, muscles, and tendons that allow us to move freely through life.

What Is Locomotive Syndrome?

The Japan Orthopaedic Association coined the concept of Locomotive Syndrome (ロコモティブシンドローム) — a condition in which age-related deterioration of the musculoskeletal system reduces a person's ability to move independently, significantly raising the risk of requiring nursing care.

• Scale in Japan: An estimated 47 million people are considered at risk for locomotive syndrome as of 2020
• Osteoporosis: Loss of bone density increases fracture risk, especially in post-menopausal women; Japan has an estimated 13 million osteoporosis patients
• Knee osteoarthritis: Cartilage erosion causes pain and restricted movement, affecting millions of middle-aged and older Japanese
• Sarcopenia: Age-related muscle loss increases fall risk and reduces everyday function

Protecting Your Musculoskeletal System

• Calcium: Aim for 700–800mg daily through milk, small fish, tofu, and leafy greens; absorption improves significantly with vitamin D
• Vitamin D: 15–30 minutes of outdoor exposure daily promotes vitamin D synthesis — essential for calcium uptake and bone density maintenance
• Strength training: Squats, single-leg stands, and leg raises build the lower-body muscle that protects joints and prevents falls
• Fall prevention at home: Removing trip hazards, installing handrails, and wearing stable footwear are among the most effective measures to prevent bone-breaking falls

How to Mark This Day

• Try the Locomotive Syndrome self-check tests (two-step test and stand-up test) available on the Japan Orthopaedic Association website
• Start a daily squat habit with your family today — even 10 squats a day builds meaningful leg strength over time
• Add a calcium-rich food to your next meal: a glass of milk, firm tofu, or a handful of small dried fish
• If you are over 40, consider asking about a bone density scan — many local health check-ups offer this at low or no cost

The Freedom to Keep Moving

The ability to walk to a favourite restaurant, climb stairs without pain, or pick up a grandchild depends entirely on bones, joints, and muscles that most of us never think about — until they hurt. Bone and Joint Day is a reminder that mobility is not a given: it is something to be earned and protected, day by day, starting now.