Effects of Tourniquet Use on Physical Function and Performance in Primary Total Knee Arthroplasty

Summary

Background:

Osteoarthritis (OA) is the most common joint disease that causes symptomatic health problems in the elderly population. For some patients with knee OA, total knee arthroplasty (TKA) may be the only option that offers the possibility of reestablishing the patient's life quality.

Surgery of TKA usually takes place in a complete bloodless field established by a tourniquet around the thigh. The method aims to reduce blood loss and give the surgeon better visibility during the operation. The method is, however, not without side effects as patients often experience severe pain and swollen leg in the time after surgery. Furthermore, has the method shown decidedly muscle- and nerve damage followed by prolonged rehabilitation and reduced physical function.

It is, however, possible to perform the operation without the use of the tourniquet.

Aim and hypothesis:

The aim of the present study is to assess the effects of tourniquet use in TKA on physical function, early rehabilitation, pain and opioid consumption.

Hypotheses H1: TKA without tourniquet leads to better physical function and early rehabilitation.

H2: TKA without tourniquet causes less pain and opioid consumption H3: Recovery of mechanical lower limb function post TKA is faster without use of tourniquet.

Methods:

80 patients (40 in each group) all eligible for TKA will be consecutively recruited and randomized to A) TKA without tourniquet, B) TKA with tourniquet. Subjects will be evaluated before the operation (baseline) and 14 days, 3, 6 and 12 months after the operation.

The primary outcome will be the change from baseline to 3 months in self-administered knee-function (KOOS-ADL subscale). Further, will we examine a number of pre-specified secondary outcomes, which include self-rated knee-related pain, symptoms, difficulty with sports and leisure activities, and quality of life. In addition, muscle function, physical performance, and the use of pain medication will be studied

Impact of the project:

The project design of this study will enable analyses for determining the impact of operating without tourniquet and whether such an intervention can in fact improve physical function, performance and quality of life within TKA patients. The results may impact notably on the patient level and possible redefine current surgical strategies. The societal perspective of the project is to remobilize patients faster, which may reduce hospital services and absence from work.

Conditions

• Knee Osteoarthritis

Interventions

PROCEDURE

Non-tourniquet assisted TKA

The intervention group will undergo non-tourniquet assisted total knee arthroplasty, which means that blood flow to the lower limb is maintained throughout surgery.

PROCEDURE

Tourniquet assisted TKA

The procedure involves the use of a tourniquet around the thigh. During surgery the tourniquet will be inflated above the systolic blood pressure to ensure a complete bloodless surgical field.

Sponsors & Collaborators

• The Danish Rheumatism Association

  collaborator OTHER

• Bevica Fonden

  collaborator OTHER

• University of Southern Denmark

  lead OTHER

Principal Investigators

• Rasmus Lohmann-Jensen, Cand. Scient · Odense University Hospital and University of Southern Denmark

• Søren Overgaard, Professor · Odense University Hospital and University of Southern Denmark

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Model

PARALLEL

Eligibility

Min Age

50 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2013-09-30

Primary Completion

2014-11-30

Completion

2016-09-30

Countries

• Denmark

Study Locations