Low Versus High Pressure Suction Drainage After Total Knee Arthroplasty

"Low Versus High Pressure Suction Drainage After Total Knee Arthroplasty: a Double Blind Randomized Controlled Trial"

Principal hypothesis:

A low suction drainage (-50 mmHg) reduce a 25% the blood loss with respect a standard closed drainage (-700 mmHg) following total knee arthroplasty.

Secondary's hypothesis:

• It don't expect differences in:

  1. Incidence of hematomas
  2. Incidence in surgery wound infection
  3. Time of immobilization
  4. Duration of hospitalization

• The low suction drainage (-50 mmHg) will be more cost-effective than the standard closed drainage (-700 mmHg)

Inclusion Criteria:

• Adult knee replacement patients who agreed to participate in the study

Exclusion Criteria:

• People that not accomplished the inclusion criteria