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Trial registered on ANZCTR

Registration number
Ethics application status
Date submitted
Date registered
Date last updated
Date data sharing statement initially provided
Type of registration
Prospectively registered

Titles & IDs
Public title
Comparing information for consent for orthopaedic procedures given by a video, or by a doctor, to see if this improves patient understanding of a procedure.
Scientific title
A randomised controlled trial comparing video assisted informed consent to traditional informed consent for orthopaedic procedures to assess patient knowledge and satisfaction
Secondary ID [1] 295639 0
Nil known
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Osteoarthritis 308973 0
Hallux valgus 308974 0
Meniscal tear 308975 0
Arthritis 308976 0
Cartilage disorders 308977 0
Bone disease 308978 0
Joint injury 308979 0
Condition category
Condition code
Musculoskeletal 307872 307872 0 0
Musculoskeletal 307873 307873 0 0
Other muscular and skeletal disorders
Surgery 307874 307874 0 0
Other surgery
Injuries and Accidents 308021 308021 0 0
Other injuries and accidents

Study type
Description of intervention(s) / exposure
Patients will receive video-assisted consent or usual care when informed consent is undertaken for orthopaedic procedures.
Arm 1 (video-assisted consent)
Arm 2 (usual care)
The intervention is a short video animation (approximately 5 minutes) that discusses the risks, benefits and alternatives of orthopaedic procedures, and will be watched on a computer or tablet computer in the doctors office. The animations are narrated by a voiceover artist from a script constructed by orthopaedic specialists. There are separate animations for each orthopaedic procedure that will be undertaken e.g. knee and hip arthroplasty, knee arthroscopy etc. These videos have bee designed specifically for the study. The animation will be watched by the patient and the research assistant will supervise to try and ensure that the video is completely watched by the patient. All participants will be offered the opportunity to ask questions after the video has been watched or after the doctor has undertaken informed consent.
Intervention code [1] 301958 0
Comparator / control treatment
The comparator group is informed medical consent provided by the orthopaedic surgeon, which is usual / standard care.
Control group

Primary outcome [1] 306850 0
Knowledge recall on a knowledge assessment scored out of ten following consent.
The knowledge recall has been designed specifically for this study.
Timepoint [1] 306850 0
Measured immediately after informed consent has been undertaken.
Primary outcome [2] 306851 0
Patient satisfaction recorded on a likert scale.
Timepoint [2] 306851 0
Measured immediately after the consent has been undertaken
Secondary outcome [1] 349938 0
Physician satisfaction recorded on a likert scale.
Timepoint [1] 349938 0
Measured immediately after the consent has been undertaken
Secondary outcome [2] 349939 0
Time per consent measured using a stopwatch
Timepoint [2] 349939 0
Measured in minutes and seconds from the commencement of the consent, and finishing when there are no further questions from the patient

Key inclusion criteria
Patients aged greater than 18 years of age, who are undergoing an orthopaedic procedure, and who are able to provide informed medical consent will be invited to participate in the study.
Minimum age
18 Years
Maximum age
No limit
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
Patients with visual impairment, hearing impairment, or who come from a non-English speaking background without a command of English, or do not have the capacity to consent will be excluded from participation.

Study design
Purpose of the study
Educational / counselling / training
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Allocation concealment will be undertaken by sealed opaque envelopes.
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Computerised sequence generation will be used to randomly allocate subjects into the different groups.
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?

Intervention assignment
Other design features
Not Applicable
Type of endpoint(s)
Statistical methods / analysis
We calculated a sample size of 152 participants (76 per group) to detect a minimally clinically important difference of knowledge retention post consent as undertaken on a knowledge questionnaire with 80% power at 5% level of significance.

Recruitment status
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 11497 0
Campbelltown Private Hospital - Campbelltown
Recruitment postcode(s) [1] 23521 0
2560 - Campbelltown

Funding & Sponsors
Funding source category [1] 300221 0
Name [1] 300221 0
Address [1] 300221 0
Level 6 Tower 3/Darling Park, 201 Sussex St, Sydney NSW 2000
Country [1] 300221 0
Primary sponsor type
Commercial sector/Industry
PO Box 4118
Royal North Shore Hospital
NSW 2065
Secondary sponsor category [1] 299634 0
Name [1] 299634 0
Address [1] 299634 0
Country [1] 299634 0

Ethics approval
Ethics application status
Ethics committee name [1] 301043 0
Nepean Blue Mountains Local Health District Human Research Ethics Committee
Ethics committee address [1] 301043 0
Nepean Blue Mountains Local Health District
Research Office
Level 5, South Block
PO Box 63
Penrith NSW 2751
Ethics committee country [1] 301043 0
Date submitted for ethics approval [1] 301043 0
Approval date [1] 301043 0
Ethics approval number [1] 301043 0

Brief summary
Informed medical consent is often poorly done; it can be time consuming, there is no clear standard between different medical practitioners, and overwhelmingly, the literature provides support for standardised animations or video consent. Video animations have been shown to improve patient comprehension, take the same amount of time, or can even save time and in most cases there is an improvement in patient satisfaction and comprehension.

Videos have been successfully used to consent for colonoscopy, knee arthroscopy, laparoscopic urological procedures, cataract surgery, intravenous fluorescent angiography, vascular procedures, coronary angiography, cardiac electrophysiology, urogynaecological surgery as well as for clinical trials.

There are no studies evaluating video informed consent for orthopaedic procedures in Australia. Given the literature shows improvements in patient understanding and satisfaction, it is anticipated that the video informed consent will lead to enhanced clinical practice, including enhanced knowledge retention by patients, improved patient and physician satisfaction, improved recall of the procedure, as well as saving minutes per consultation.

We aim to compare traditional doctor-patient informed consent to a video animation when consenting for orthopaedic procedures (e.g. total hip replacement, total knee replacement, shoulder reconstruction, joint arthroscopy, hallux valgus deformity and other procedures).
We propose that the video consent will be superior to traditional doctor patient consent – patients will have better retention of information, comprehension and understanding and higher satisfaction.
Trial website
Trial related presentations / publications
Public notes

Principal investigator
Name 85686 0
Dr Rebecca Saunderson
Address 85686 0
Department of Dermatology
Royal North Shore Hospital
Reserve Road
St Leonards
NSW 2065
Country 85686 0
Phone 85686 0
+61 2 9926 7111
Fax 85686 0
Email 85686 0
Contact person for public queries
Name 85687 0
Dr Rebecca Saunderson
Address 85687 0
Department of Dermatology
Reserve Road
St Leonards
NSW 2065
Country 85687 0
Phone 85687 0
+61 2 9926 7111
Fax 85687 0
Email 85687 0
Contact person for scientific queries
Name 85688 0
Dr Rebecca Saunderson
Address 85688 0
Department of Dermatology
Reserve Road
St Leonards
NSW 2065
Country 85688 0
Phone 85688 0
+61 2 9926 7111
Fax 85688 0
Email 85688 0

Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No/undecided IPD sharing reason/comment
What supporting documents are/will be available?
No other documents available
Summary results
No Results