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Table 1 Clinical grading of haemarthroses (Coupens and Yates)

From: Effect of haemarthrosis on the rehabilitation of anterior cruciate ligament reconstruction- single bundle versus double bundle

Grade Description
0 No detectable fluid
1 Fluid present with fluid wave
2 Palpable fluid in suprapatellar space
3 Ballotable patella
4 Tense haemarthroses