Charak Samhita
वातपूर्णदृतिस्पर्शः शोथः सन्धिगतेऽनिले । प्रसारणाकुञ्चनयोः प्रवृत्तिश्च [३] सवेदना ॥३७॥
[Sandhigata vata (vitiation in joints)] When vitiated vata is located in joints, it leads to palpatory feeling of air in joints(crepitus), swelling along with painful flexion and extension.
english translation
vAtapUrNadRtisparzaH zothaH sandhigate'nile । prasAraNAkuJcanayoH pravRttizca [3] savedanA ॥37॥
hk transliteration by Sanscript