- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04809714
The Role of Blood Flow Restriction Therapy in Postoperative Elderly Patients With Hip Fracture
June 16, 2023 updated by: Clay Spitler, University of Alabama at Birmingham
The Role of Blood Flow Restriction Therapy in the Postop Rehabilitation of Elderly Patients With Hip Fractures: A Randomized Controlled Pilot Study
The investigators aim to study the use of blood flow restriction therapy (BFR) to augment routine post-operative physical therapy in elderly patients (age >= 65) after recovering from surgical treatment of hip fractures.
Study Overview
Status
Active, not recruiting
Conditions
Detailed Description
For elderly patients, a hip fracture is a life-altering event associated with poor overall outcomes despite early surgical treatment.
The elderly population and those with significant osteopenia is growing exponentially and thus the optimal treatment and rehabilitation of hip fractures warrants increased investigation.
Despite numerous interventions, falls plague the elderly population and hip fractures remain a very common problem for this population that needs to be addressed.
Rapid deconditioning plays a significant role in patient morbidity following hip surgery.
Recently, blood flow restriction (BFR) treatment has been shown to be effective in improving muscle strength when combined with low load resistance training physical therapy programs in elderly patients.
Few studies have examined BFR in post-operative orthopedic trauma patients.
The investigators aim to study the use of BFR to augment post-operative physical therapy in elderly patients (age >= 65) in the first 2-weeks after recovering from surgical treatment of hip fractures.
Due to the profound muscle atrophy that occurs in the immediate postoperative period because of immobility and disuse, the investigators hypothesize that BFR may provide an anabolic effect and conserve muscle strength.
The investigators hypothesis was inspired by the findings of the Nobel Prize in Physiology 2019 which describes how varying levels of oxygen shape both physiology and pathology.
This is a prospective, randomized blinded 2-week study of elderly patients recovering from surgical treatment of hip fractures with two arms: 1) routine post-op physical therapy 2) routine physical therapy + BFR and neuromuscular electrical stimulation (NMES) beginning on postoperative day 1 and occurring 5 days per week for 2 weeks.
To optimize safety, the study will be in an inpatient-only setting and supervised by team members certified in the application of BFR.
The investigators plan to apply lessons learned to a larger 8-week intervention upon completion of this short-term pilot study.
To our knowledge, this is the first study to use BFR in postoperative geriatric patients.
Main outcomes will include thigh leg circumference on postoperative day 1 and at the end of week 2, adverse event log for complications, knee extension strength via handheld dynamometry (HHD) at post-op day 1 and week 2, gait speed, functional tests including timed up and go, opioid MME (morphine milligram equivalent) consumption and patient perceived pain and quality of life measures.
The investigators anticipate BFR therapy will be tolerated well, improve global patient health and satisfaction, lead to lower extremity muscle hypertrophy, and enhance functional recovery after geriatric hip fracture carrying tremendous potential for extramural funding and scientific advancement.
Study Type
Interventional
Enrollment (Actual)
20
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Clay A Spitler, MD
- Phone Number: 770-309-5377
- Email: caspitler@uabmc.edu
Study Contact Backup
- Name: Matthew C Hess, MD
- Phone Number: 706-288-4070
- Email: mhess@uabmc.edu
Study Locations
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Alabama
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Birmingham, Alabama, United States, 35223
- University of Alabama at Birmingham
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
63 years and older (Older Adult)
Accepts Healthy Volunteers
No
Description
Inclusion Criteria:
- Age >= 65 years old, any sex, any ethnicity
- Isolated, closed proximal femur fracture without any prior surgery or orthopedic implants to affected proximal femur. This includes all fractures with primary fracture line that is proximal to the lesser trochanter. For example, subtrochanteric femur fractures are excluded whereas reverse obliquity intertrochanteric femur fractures may be included.
- OTA codes 31A, 31B, and 31C
- Segmental and pathologic femur fractures are excluded.
- Ambulatory without assistive device prior to injury
- Community living prior to injury
- No injury or surgery to the contralateral lower extremity within past 1 year
- Alert and oriented and able to provide informed consent for self
- English speaking
- Able to weight bear as tolerated after surgery as deemed by treating orthopedic surgeon
- Able to tolerate light exercise (could walk approximately 0.5 mile without significant pain or shortness of breath) preoperatively as determined by patient self-reported history
Exclusion Criteria:
- Presence of other significant injuries at the time of injury to the proximal femur that would require additional surgery
- Significant delay in presentation to health care facility (>3 days from time of injury) for assessment and treatment of the proximal femur fracture
- History of DVT in any extremity, existing DVT in any extremity, or any condition known to increase risk for coagulopathy including but not exclusively current pregnancy, current diagnosis of cancer/cancer that is being treated
- Current use of any medication or supplement that may increase blood clotting risk
- History of: sickle cell anemia, peripheral arterial disease, dementia, actively treated cancer
- Varicose veins in either lower extremity
- Any significant medical condition that would preclude ability to bear weight as tolerated postoperatively
- Significant cardiac disease as defined by recent stent placement in the past year or presence of implantable pacemaker device
- Morbid obesity (BMI >40)
- Prior surgery to either lower extremity within one year
- Prior surgery or injury to either lower extremity that would preclude application of a tourniquet and includes but not exclusively: skin grafting, vascular bypass grafting, dialysis site, chronic wound, lymphotomies, varicose vein surgery, presence of tumor)
- Soft tissue injury to either lower extremity that precludes placement of tourniquet
- Diagnosis of uncontrolled hypertension (BP greater than 180/110 on at least two measurements as measured during inpatient stay before surgery)
- Patients with potentially severe problems with maintaining follow-up (ex. Patients who are prisoners, homeless at time of injury, severe dementia, intellectually challenged without adequate family support or have documented significant psychiatric disorder)
- COVID-19 positive
- Admission to ICU postoperatively
- Inadequate postop x-rays placing patient at high risk of implant-related failure
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Routine Post-operative Physical Therapy
The control group will undergo routine post-op and undergo a modified version of the graduated therapy protocol.
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The control group with undergo a post-op therapy protocol that mirrors that of the intervention group except that they will use a Delfi tourniquet system blood pressure cuff with a limb occlusion pressure (LOP) of only 10%.
Participants will use a neuromuscular electrical stimulation device operating at a sub-therapeutic level.
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Experimental: Routine Physical Therapy + Blood Flow Restriction and Neuromuscular Electrical Stimulation (NMES)
The intervention group will start with a Delfi tourniquet system cuff set on a limb occlusion pressure (LOP) of 60-100%.
The intervention group will also use a neuromuscular electrical stimulation device at therapeutic level in addition to BFR.
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Postoperative rehabilitation will occur up to twice a day for 5 days a week for 2 weeks using a Delfi tourniquet system blood pressure cuff with a limb occlusion pressure (LOP) of 60-100%.
For each physical therapy session, participants will undergo therapy following a standardized protocol of 3-5 difference exercises each with 4 sets total in addition to NMES.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Participants thigh circumference measurement
Time Frame: At enrollment
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10cm proximal to superior pole patella and leg circumference measured at 10 distal to inferior pole patella for both extremities
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At enrollment
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Participants thigh circumference measurement
Time Frame: Post op 2 weeks
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10cm proximal to superior pole patella and leg circumference measured at 10 distal to inferior pole patella for both extremities
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Post op 2 weeks
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Therapist-reported compliance and adverse event logs
Time Frame: Post op 2 weeks
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Specify if able to perform specific exercises to completion or not
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Post op 2 weeks
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Objective muscle strength measured by a handheld dynamometer
Time Frame: At enrollment
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To assess strength of quadriceps extension
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At enrollment
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Objective muscle strength measured by a handheld dynamometer
Time Frame: Post op 2 weeks
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To assess strength of quadriceps extension
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Post op 2 weeks
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Participant self-reported outcome for pain
Time Frame: Post op 2 weeks
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The visual analog scale (VAS) is a validated, subjective measure for acute and chronic pain.
Scores are recorded by making a handwritten mark on a 10-cm line that represents a continuum between "no pain" and "worst pain."
The range of scores are from 0-100.
A higher score indicates greater pain intensity.
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Post op 2 weeks
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Participant self-reported outcome: Perceived Exertion (Borg Rating of Perceived Exertion)
Time Frame: Post op 2 weeks
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To assess effort and exertion, breathlessness and fatigue during exercise
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Post op 2 weeks
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Timed Up and Go Test (TUG)
Time Frame: Post op 2 weeks
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Measurement of the time in seconds for a person to rise from sitting from a standard arm chair, walk 3 meters, walk back to the chair, and sit down.
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Post op 2 weeks
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Modified 30-second sit-to-stand test
Time Frame: Post op 2 weeks
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Measurement of the number of sit-to-stands a person can complete in 30 seconds.
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Post op 2 weeks
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Five-times sit to stand test
Time Frame: Post op 2 weeks
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Measures lower extremity strength and function.
Participants are asked to stand up from a seated position and sit down 5 times as quickly as possible.
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Post op 2 weeks
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Functional testing performed
Time Frame: Post op 2 weeks
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5 Meter gait speed test
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Post op 2 weeks
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12-Item Short Form Health Survey (SF-12) (Mental Health Component)
Time Frame: Post op 2 weeks
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This is a general health questionnaire with higher scores representing better health.
A summary score from the SF-12 (Mental Health Component) will be reported.
The score may be represented as a Z-score.
The average summary score is 50 points with a standard deviation of 10 points.
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Post op 2 weeks
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12-Item Short Form Health Survey (SF-12) (Physical Health Component)
Time Frame: Post op 2 weeks
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This is a general health questionnaire with higher scores representing better health.
A summary score from the SF-12 (Physical Health Component) will be reported.
The score may be represented as Z-score.
The average of the summary score is 50 points with a standard deviation of 10 points.
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Post op 2 weeks
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Patient-Reported Outcomes Measurement Information System (PROMIS)
Time Frame: Post op 2 weeks
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This questionnaire measures physical, mental, and social health.
Higher scores represents more of the concept being measured.
A score of 40 is one standard deviation lower than the mean of the reference population while a score of 60 is one standard deviation higher than the mean of the reference population.
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Post op 2 weeks
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Pain medicine requirements during 2-week stay
Time Frame: Post op 2 weeks
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To assess the milligram morphine equivalents of pain medicine used.
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Post op 2 weeks
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Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Post-operative complications: Mortality
Time Frame: Post op 2 weeks
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Mortality will be assessed by living status.
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Post op 2 weeks
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Post-operative complications: Blood Clots
Time Frame: Post op 2 weeks
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Blood clots will be assessed by a detailed physical examination.
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Post op 2 weeks
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Post-operative complications: Deep Infection
Time Frame: Post op 2 weeks
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Deep infection will be assessed by the need to return to the operating room for surgical debridement or by the presence of positive cultures.
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Post op 2 weeks
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Post-operative complications: Nerve Damage
Time Frame: Post op 2 weeks
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Nerve damage will be assessed by a detailed physical examination assessing both sensory and motor functions.
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Post op 2 weeks
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Number of patient-reported falls
Time Frame: Post op 2 weeks
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To assess tolerance of BFR we will record the incidence of falls.
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Post op 2 weeks
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Study Director: David A Patch, MD, University of Alabama at Birmingham
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Centner C, Wiegel P, Gollhofer A, Konig D. Effects of Blood Flow Restriction Training on Muscular Strength and Hypertrophy in Older Individuals: A Systematic Review and Meta-Analysis. Sports Med. 2019 Jan;49(1):95-108. doi: 10.1007/s40279-018-0994-1. Erratum In: Sports Med. 2018 Nov 9;:
- Prabhakar NR. 2019 Nobel Prize in Physiology or Medicine. Physiology (Bethesda). 2020 Mar 1;35(2):81-83. doi: 10.1152/physiol.00001.2020. No abstract available.
- Bhandari M, Devereaux PJ, Swiontkowski MF, Tornetta P 3rd, Obremskey W, Koval KJ, Nork S, Sprague S, Schemitsch EH, Guyatt GH. Internal fixation compared with arthroplasty for displaced fractures of the femoral neck. A meta-analysis. J Bone Joint Surg Am. 2003 Sep;85(9):1673-81. doi: 10.2106/00004623-200309000-00004.
- Simunovic N, Devereaux PJ, Sprague S, Guyatt GH, Schemitsch E, Debeer J, Bhandari M. Effect of early surgery after hip fracture on mortality and complications: systematic review and meta-analysis. CMAJ. 2010 Oct 19;182(15):1609-16. doi: 10.1503/cmaj.092220. Epub 2010 Sep 13.
- Baker BS, Stannard MS, Duren DL, Cook JL, Stannard JP. Does Blood Flow Restriction Therapy in Patients Older Than Age 50 Result in Muscle Hypertrophy, Increased Strength, or Greater Physical Function? A Systematic Review. Clin Orthop Relat Res. 2020 Mar;478(3):593-606. doi: 10.1097/CORR.0000000000001090.
- Bowman EN, Elshaar R, Milligan H, Jue G, Mohr K, Brown P, Watanabe DM, Limpisvasti O. Proximal, Distal, and Contralateral Effects of Blood Flow Restriction Training on the Lower Extremities: A Randomized Controlled Trial. Sports Health. 2019 Mar/Apr;11(2):149-156. doi: 10.1177/1941738118821929. Epub 2019 Jan 14.
- Natsume T, Ozaki H, Saito AI, Abe T, Naito H. Effects of Electrostimulation with Blood Flow Restriction on Muscle Size and Strength. Med Sci Sports Exerc. 2015 Dec;47(12):2621-7. doi: 10.1249/MSS.0000000000000722.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
January 1, 2022
Primary Completion (Estimated)
December 13, 2024
Study Completion (Estimated)
December 31, 2025
Study Registration Dates
First Submitted
March 6, 2021
First Submitted That Met QC Criteria
March 18, 2021
First Posted (Actual)
March 22, 2021
Study Record Updates
Last Update Posted (Estimated)
June 19, 2023
Last Update Submitted That Met QC Criteria
June 16, 2023
Last Verified
June 1, 2023
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- IRB-300006887
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
IPD Plan Description
To be determined.
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
Yes
product manufactured in and exported from the U.S.
Yes
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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