Drain Removal Before Versus After CPM in Primary Total Knee Arthroplasty
Key facts
- Who runs it
- Ankara Etlik City Hospital
- Where
- Türkiye1 site in 1 countryChoose a country to see its sites
- Trial code
- Status
- Active, not recruiting
- People taking part
- 104 people enrolled
- Started
- 15 Jun 2025
- Ended
- 30 Dec 2025
- Type of study
- Interventional, 2 groups
- Treatments tested
- Drain Removal Before CPM
- Drain Removal After CPM
- Record updated
- 24 December 2025
Who can take part
- Age
- 18 years and older
- Sex
- Women and men
- Healthy volunteers
- Cannot take part
The registry criteria, word for word
Show all 9 criteriaShow less
Who can take part
- Age 18 years or older
- Undergoing primary unilateral total knee arthroplasty (TKA) for end-stage knee osteoarthritis
- Able to provide written informed consent
- Able to comply with scheduled postoperative follow-up assessments
Who cannot take part
- Previous infection in the index knee
- Neuromuscular disorders affecting lower extremity function
- Revision total knee arthroplasty
- Inflammatory arthropathy
- Inability to attend follow-up visits
This trial has no sites in United States.
It has sites in one country. Choose a country to see its sites.
About the trial
What the trial wants to find out
The aim of this prospective randomized controlled study was to determine whether the timing of drain removal in relation to continuous passive motion (CPM) application influences postoperative residual hematoma formation following primary total knee arthroplasty (TKA). Our primary hypothesis was that removing the drain after initiating CPM would result in less residual hematoma, as CPM-induced intra-articular fluid and blood mobilization would be evacuated through the drain before its removal, thereby reducing postoperative fluid accumulation.
The 2 groups in the trial
- Drain Removal Before CPMOther group
The hemovac drain is removed approximately 24 hours after surgery, immediately before a standardized 1-hour CPM session performed at 0-90° flexion. All other perioperative and rehabilitation protocols are identical between groups.
- Drain Removal After CPMOther group
Patients undergo a standardized 1-hour CPM session at 0-90° flexion approximately 24 hours after surgery. The hemovac drain is removed immediately after completion of the CPM session. All other perioperative and rehabilitation protocols are identical between groups.
Data and sources
- Registry record
- Listed on ClinicalTrials.gov.
- Official title
- Drain Removal Before Versus After Continuous Passive Motion in Primary Total Knee Arthroplasty: Impact on Residual Hematoma in a Prospective Controlled Study
- Record updated
- 24 December 2025