Vellu et al | Nurexus | Journal of MedVerse Research and Practice | Volume 1 | Issue – 1 | June 2023
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Journal of MedVerse Research & Practice
nurexus.com
Evaluation of Drain Need in Total Knee Replacement Surgery
Dr. Vellu¹, Dr. Pavithra
2
Postgraduate, Professor & HOD
Department of Orthopaedics
Meenakshi Medical College Hospital and Research Institute, Enathur, Kanchipuram.
Email ID: drvellu@yahoo.com
Submission Date: 26.05.2023
Accepted Date: 21.06.2023
Published Date: 30.06.2023
Copyright © 2023. The author(s). Published by Journal of MedVerse Research and Practice. This is an open-access
article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits
unrestricted use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
Abstract
Introduction: Since its introduction, total knee replacement procedures have incorporated the use of a tourniquet.
However, this practice is associated with various complications, including limb ischemia, blood vessel
calcification, and nerve palsy, along with increased postoperative drainage. To address the risk of hematoma
formation and excessive fluid buildup in the knee joint, suction drains were traditionally inserted. Despite this
precaution, the primary concern with drain usage remains an elevated risk of infection.
Materials & Methods: This study documents 100 instances of knee replacement surgery conducted without the
use of tourniquets or drains. In cases of single knee replacements, blood loss averaged around 300 ml, eliminating
the need for blood transfusions or drain insertion as a crepe bandage was utilized to create a tamponade effect.
The absence of a tourniquet prevented any associated complications. Patients experienced excellent post-
operative recovery, and the intra-operative antibiotic prophylaxis proved effective.
Results: On the first day after surgery, patients were encouraged to mobilize according to their pain tolerance.
They noted reduced pain levels and enhanced functionality. Most patients described tolerable post-surgical
discomfort and increased joint mobility. Additionally, all study participants recovered without complications or
adverse events.
Conclusions: The use of a Romovac suction drain is not essential for total knee replacement procedures.
Keywords: Evaluation, Drain, Total Knee Replacement Surgery
Introduction
The introduction of total knee replacement surgery in the early 1970s marked a significant
advancement in orthopedic procedures, with the tourniquet being routinely employed to create a
bloodless surgical field and improve visibility for the surgeon [1]. Despite its benefits, the use of a
tourniquet has been linked to several adverse effects, including ischemic limb injury, venous
thromboembolism, calcified vessels, and nerve palsy. Additionally, patients undergoing surgeries with
tourniquets often experience increased postoperative drainage and discomfort [2][3]. Severe knee
arthritis is commonly treated through total knee arthroplasty (TKA), a surgical intervention designed to
alleviate pain and restore joint function [4]. Although TKA has proven to be an effective procedure
with favorable long-term outcomes, there remains considerable debate regarding the use of drains
during the operation [5][6].
Vellu et al | Nurexus | Journal of MedVerse Research and Practice | Volume 1 | Issue – 1 | June 2023
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This controversy persists even with the advent of modern surgical techniques that aim to minimize
blood loss, reduce complications, and promote faster recovery [7]. The use of drains in TKA is
associated with potential risks, such as an increased chance of retrograde infection, greater
postoperative blood loss, delayed rehabilitation, and, in some cases, accidental drain dislocation [8][9].
If a drain breaks during or after surgery, it may require wound revision for removal, posing an
additional surgical burden. Although the primary purpose of drains is to prevent hematoma formation
and remove excess fluid through suction at the surgical site, their use can inadvertently elevate the risk
of postoperative infections [10,11].
Materials & Methods
This study documents 100 cases of total knee replacement surgeries conducted without tourniquet use.
During the surgical incision and subsequent bleeding, blood vessels are sealed through cauterization,
enabling the completion of the procedure without inflating a tourniquet or using a drain. A crepe
bandage is applied post-dressing, creating a tamponade effect that minimizes blood accumulation and
serves as an alternative to a drain. The typical blood loss for a single knee replacement is around 300 ml,
with no need for blood transfusions. By eliminating tourniquet-related complications such as venous
thromboembolism and fat necrosis, postoperative recovery is enhanced, and intraoperative antibiotic
prophylaxis is effective.
The study data was input into Microsoft Excel and variables were coded. Analysis was conducted using
SPSS software (Version 27, IBM), employing descriptive statistics. Associations between categorical
variables were examined. A statistical test was used to compare treatment group outcomes and test the
hypothesis, with a P value below 0.5 considered significant.
Results
This study included a total of 100 participants. On the first day after their operation, patients were
encouraged to become mobile based on their individual comfort levels. Most participants experienced
tolerable post-surgery pain and improved joint mobility. Additionally, all study subjects recovered
successfully without any complications or adverse events.
Table 1: Age distribution among the study participants
Age
Percentage (%)
< 40 years
21
41 – 60 years
34
>60 years
45
Total
100
The age distribution of the study participants revealed that 21% were below 40 years of age, 34% were
between 41 and 60 years, and 45% were above 60 years. This indicates that the majority of the
participants, accounting for 79%, were over 40 years old, with the largest proportion belonging to the
age group above 60 years. This trend suggests that the study population was predominantly composed of
middle-aged and elderly individuals, reflecting a higher prevalence of the studied condition or surgical
intervention among older adults.
Vellu et al | Nurexus | Journal of MedVerse Research and Practice | Volume 1 | Issue – 1 | June 2023
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Chart 1: Gender distribution among the study participants
Among the study participants, the gender distribution was 60% female and 40% males who underwent
the total knee replacement.
Table 2: Postoperative mobilization on day 1
Postoperative mobilization D1
Percentage (%)
Yes
80
No
20
Total
100
A study examining the mobility of 100 patients on the first day after surgery revealed that 80% were
able to move around, while 20% remained immobile. This data suggests that a substantial proportion of
the group achieved early mobilization post-operation, which is considered a favorable outcome. The
ability of four-fifths of the patients to become mobile so soon after their procedure indicates a positive
trend in post-surgical recovery.
Table 3: Details on Pain tolerance among the study participants
Pain tolerance
Percentage (%)
Mild pain
40
Moderate pain
45
Severe pain
15
Total
100
Of the total sample, 40 individuals (40%) experience mild pain, making this the second most common
category. The majority, 45 individuals (45%), report moderate pain, indicating that half of the sample
population has a moderate pain tolerance. The smallest group, consisting of 15 individuals (15%),
experiences severe pain.
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Chart 2: Details on the increased range of motion
Among the study patients, 80% patients had an increased range of motion
Table 4: Details of Complications among the study Participants
Complication
Percentage (%)
Present
0
Absent
100
The study findings indicate that complications were absent among all 100 participants. This is
demonstrated by the complete lack of cases in the "Present" category for complications, with a 0%
frequency and percentage. Conversely, the entire cohort of 100 individuals (100%) fell into the "Absent"
category, signifying no complications whatsoever. This clear-cut distribution demonstrates a total lack
of complications within this particular sample, implying that every patient in the group recovered
without experiencing any negative outcomes.
Discussion
According to Jeon et al. [11], the practice of using closed suction drainage is becoming increasingly
controversial among surgeons worldwide, leading to a gradual reduction in its routine application. The
primary justification for drain usage has traditionally been concern over hematoma formation and
subsequent infection. Surgeons historically believed that wound drainage prevented the accumulation
of blood in postoperative wound compartments, thereby reducing hematoma formation. Hematomas
are considered an ideal medium for bacterial proliferation due to low concentrations of opsonic
proteins, which impair phagocytic activity and delay wound healing. Additionally, it has been
theorized that the use of drains prevents the tamponade effect, which is essential for obliterating dead
space within the surgical wound.
Various techniques have been employed to assess postoperative hematoma formation, including
measurement of dressing weight, ultrasonographic evaluation of the wound, and single-photon
emission computed tomography. However, none of these methods have conclusively demonstrated a
significant role for drains in preventing hematoma formation. Evidence suggests that a certain degree
of hematoma persists irrespective of drain usage. Consequently, there appears to be no strong
Vellu et al | Nurexus | Journal of MedVerse Research and Practice | Volume 1 | Issue – 1 | June 2023
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physiological or clinical rationale supporting the routine use of drains solely for hematoma prevention,
as also suggested by Crevoisier et al. [9].
Postoperative infection remains a major concern following total knee arthroplasty and requires prompt
management. In the present study, one patient in each group developed an early superficial infection,
both of which were successfully treated with oral antibiotics. A recent meta-analysis reported infection
rates of 0.5% in patients with drains and 1.2% in those without drains, findings comparable to a
randomized trial that reported superficial infection rates of 2.9% in drained and 4.8% in non-drained
groups. However, similar to observations by Drinkwater et al. [10] and Crevoisier et al. [9], our study
did not demonstrate any statistically significant difference in superficial wound infection rates between
the two groups. Notably, no cases of deep wound infection were observed in either group.
Several studies have reported a statistically significant association between the absence of drains and
increased rates of persistent wound discharge and ecchymosis. In the present study, although a greater
number of patients in the experimental (non-drain) group required dressing changes within the first 24
hours and exhibited ecchymosis compared to the control group, these differences were not statistically
significant. One patient (1.69%) in the experimental group experienced persistent wound discharge
lasting until the seventh postoperative day. Initially, the discharge was bloody and fluid in nature,
likely secondary to hematoma formation, and became serous after 3–4 days. In contrast, two patients
(3.2%) in the control group experienced serous discharge from the drain insertion site, persisting until
the eighth and tenth postoperative days, respectively. Similar findings have been reported by
Stucinskas et al. [5] and Tsumara et al. [6]. It is noteworthy that prolonged wound discharge or
drainage from insertion sites contributes to increased patient discomfort, prolonged hospital stay, and
higher overall treatment costs.
Conclusion
Generally, a suction drain for removal is not necessary during total knee replacement procedures.
Appreciation: We express our gratitude to all study participants for their involvement and complete
cooperation. We also recognize the faculty members of the Orthopedics Department for their
encouragement and support.
Financial backing and sponsorship: None
Conflict of Interest: Nil
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