Hi
Dr Utsav Agrawal, orthopaedic specialist here
I would like to know did you have any swelling over your knee after the injury?
Such twisting injuries with difficulty in walking or climbing stairs are indications of injury affecting certain ligaments in your knee.
A systemic evaluation is must.
Next Steps
Xray and mri of knee after examination
Health Tips
Apply ice, use a knee cap, take anti inflammatory medication, avoid any strenuous physical activity