Why is an anti-gravity treadmill used after surgery?

The machine uses an air-supported chamber around the lower body to make each step feel lighter. This can let you practise a more natural walking pattern when full weight-bearing is uncomfortable or temporarily restricted. A physiotherapist adjusts the support and walking speed to match the surgeon's instructions and your response. The session may focus on heel-to-toe movement, even steps, knee control or hip stability rather than distance.

Reduced loading does not mean the operated area is ready for unrestricted activity. The treadmill is one part of a programme that may also include exercises for joint movement, muscle activation, swelling control and everyday transfers. Progress is usually guided by symptoms, strength and surgical precautions.

Attend sessions with the footwear and support recommended by your rehabilitation team. Tell the physiotherapist about pain, pressure, dizziness, unusual fatigue or a change in your walking pattern during or after exercise. Follow the permitted amount of weight-bearing at home, use walking aids as instructed and keep wound-care advice separate from exercise advice. Do not increase treadmill support, speed or session length on your own.

Contact your surgical team promptly for increasing wound redness, drainage, fever, worsening swelling or pain that is not settling as expected. Seek urgent help for sudden chest pain, severe breathlessness, fainting, or a new cold, pale or very painful limb. Stop the session and report a sudden giving-way sensation or a new loss of movement.

Ask when partial or full weight-bearing is allowed, what symptoms should limit a session, which walking aid to use, and how treadmill practice fits with home exercises and follow-up reviews.