B777-200
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Time Pressure; Troubleshooting
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Landed As Precaution; General Maintenance Action
Aircraft
At 800 feet AGL; clicked autopilot off for a visual landing. At 500 ft.; FO called 'Stable; cleared to land Runway XX Center.' I replied 'Landing.' Between 500 and 400 feet AGL tried to make small lateral correction with aileron but aileron movement was limited. Used a touch of rudder for correction. Clicked autopilot button again and crossed checked then confirmed that 'Flight Director' was displayed in PFD. Landed uneventfully but elevator movement was very heavy in flare. After landing at taxi speed; I tried to move the yoke left and right and there was very limited movement. The First Officer tried as well with the same result. We checked the Flight Control and Hydraulic Displays and both were normal.I considered a go-around but quickly [determined] a go around would be extremely difficult with big power changes and limited flight control capability. The flight path was set up to touch down in the landing zone on speed so I elected to land.Unsure what caused the flight controls to be limited. After landing; I debriefed Maintenance in the cockpit and put a detailed write up in the logbook.
B777-200 Captain reported aileron flight control stiff during landing and limited movement after landing.