NCT04492059

Brief Summary

The purpose of this study is to examine the effect of utilizing blood flow restriction (BFR) therapy in the rehabilitation of Achilles tendon rupture (ATR). Muscle atrophy occurs following Achilles tendon rupture, whether managed non operatively or operatively, which has implications on patient outcomes. The goal of physical therapy in the perioperative period is to regain and ultimately return to activity. BFR has been proposed to reduce atrophy and maintain strength, which would theoretically mitigate the deconditioning effects of an injury on surrounding musculature. BFR is proposed to work by restricting arterial inflow leading to an oxygen depleted environment and the ability to induce muscle adaption at lower maximum repetition via reactive hyperemia and induction of growth cytokines, thus leading to muscle hypertrophy. The goal of this investigation is to determine if using BFR as an adjunct in physical therapy following ATR would reduce muscular atrophy and lead to increased and expedited strength gains. Additionally, the investigators would like to determine if BFR accelerates the rehabilitation process and allows patients to perform standard rehabilitative functional tests and return to play sooner. Furthermore, the investigators will investigate patient reported outcomes metrics. The investigators hypothesize that the BFR group will have significantly greater strength gains at all time points in both non operatively and operatively treated ATR. Previous studies have shown that BFR has potential in increasing Achilles tendon stiffness, tendon cross-sectional area, muscle strength and muscle hypertrophy. However, there is a lack of evidence regarding the use of BFR in both the pre and postoperative period specifically relating to ATR. The investigators believe that the use of BFR in the perioperative period surrounding an Achilles tendon rupture and ATR has the potential to significantly decreased muscle atrophy, improve patient satisfaction and lead to earlier return to sport.

Trial Health

30
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Timeline
Completed

Started Sep 2020

Geographic Reach
1 country

1 active site

Status
withdrawn

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 7, 2020

Completed
2 months until next milestone

First Posted

Study publicly available on registry

July 30, 2020

Completed
1 month until next milestone

Study Start

First participant enrolled

September 1, 2020

Completed
1.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 25, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 25, 2022

Completed
Last Updated

February 2, 2023

Status Verified

January 1, 2023

Enrollment Period

1.6 years

First QC Date

June 7, 2020

Last Update Submit

January 31, 2023

Conditions

Keywords

Blood flow restrictionphysical therapyAchilles tendonAchilles tendon ruptureAchilles tendon repair

Outcome Measures

Primary Outcomes (1)

  • Change in plantarflexion strength from baseline

    Plantarflexion strength to be measured via dynamometer

    Measured at six-week, three-month and six-month postoperative visits

Secondary Outcomes (7)

  • Change in range of motion

    Measured at six-week, three-month and six-month postoperative visits

  • Achilles Tendon Total Rupture Score

    Measured at initial visit, six-week, three-month and six-month postoperative visits

  • Pain on the visual analog score

    Measured at initial visit, six-week, three-month and six-month postoperative visits

  • PROMIS pain scores

    Measured at initial visit, six-week, three-month and six-month postoperative visits

  • PROMIS function scores

    Measured at initial visit, six-week, three-month and six-month postoperative visits

  • +2 more secondary outcomes

Study Arms (2)

Blood flow restriction augmented physical therapy

EXPERIMENTAL

The group will undergo traditional physical therapy with the augment of blood flow restriction therapy under the supervision of trained physical therapists.

Device: Blood flow restriction augmented physical therapy

Traditional physical therapy

ACTIVE COMPARATOR

The group will undergo traditional physical therapy without the augment of blood flow restriction therapy under the supervision of trained physical therapists.

Other: Physical therapy

Interventions

Using a blood flow restriction cuff during physical therapy. It is a pressurized cuff that is used to decrease the amount of oxygen that is available to the muscle during exercise. This stimulates the muscle to believe it is in an anoxic state and can produce greater strength and hypertrophy with fewer reps and less weight which would mean less stress on a surgically repaired tendon.

Blood flow restriction augmented physical therapy

Completing traditional physical therapy.

Traditional physical therapy

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • patients aged 18-65 who suffered an achilles tendon rupture.
  • Patients with achilles tendon rupture that are being treated operatively and non-operatively.

You may not qualify if:

  • undergoing a revision procedure
  • other concomitant injuries of the same leg
  • have a history of deep vein thrombosis
  • peripheral vascular disease
  • neurovascular injury to the extremity
  • are unable to tolerate BFR treatment
  • have a leg circumference greater than the largest available tourniquet circumference of 96.52 cm
  • unable to complete physical therapy.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Henry Ford Hospital

Detroit, Michigan, 48226, United States

Location

Related Publications (9)

  • Heikkinen J, Lantto I, Flinkkila T, Siira P, Laine V, Niinimaki J, Ohtonen P, Leppilahti J.

    BACKGROUND
  • Wernbom M, Augustsson J, Raastad T. Ischemic strength training: a low-load alternative to heavy resistance exercise? Scand J Med Sci Sports. 2008 Aug;18(4):401-16. doi: 10.1111/j.1600-0838.2008.00788.x. Epub 2008 May 3.

    PMID: 18466185BACKGROUND
  • Centner C, Lauber B, Seynnes OR, Jerger S, Sohnius T, Gollhofer A, Konig D. Low-load blood flow restriction training induces similar morphological and mechanical Achilles tendon adaptations compared with high-load resistance training. J Appl Physiol (1985). 2019 Dec 1;127(6):1660-1667. doi: 10.1152/japplphysiol.00602.2019. Epub 2019 Nov 14.

    PMID: 31725362BACKGROUND
  • Yow BG, Tennent DJ, Dowd TC, Loenneke JP, Owens JG. Blood Flow Restriction Training After Achilles Tendon Rupture. J Foot Ankle Surg. 2018 May-Jun;57(3):635-638. doi: 10.1053/j.jfas.2017.11.008. Epub 2018 Feb 21.

    PMID: 29477554BACKGROUND
  • Ladlow P, Coppack RJ, Dharm-Datta S, Conway D, Sellon E, Patterson SD, Bennett AN. Low-Load Resistance Training With Blood Flow Restriction Improves Clinical Outcomes in Musculoskeletal Rehabilitation: A Single-Blind Randomized Controlled Trial. Front Physiol. 2018 Sep 10;9:1269. doi: 10.3389/fphys.2018.01269. eCollection 2018.

    PMID: 30246795BACKGROUND
  • DePhillipo NN, Kennedy MI, Aman ZS, Bernhardson AS, O'Brien L, LaPrade RF. Blood Flow Restriction Therapy After Knee Surgery: Indications, Safety Considerations, and Postoperative Protocol. Arthrosc Tech. 2018 Sep 24;7(10):e1037-e1043. doi: 10.1016/j.eats.2018.06.010. eCollection 2018 Oct.

    PMID: 30377584BACKGROUND
  • Noordin S, McEwen JA, Kragh JF Jr, Eisen A, Masri BA. Surgical tourniquets in orthopaedics. J Bone Joint Surg Am. 2009 Dec;91(12):2958-67. doi: 10.2106/JBJS.I.00634.

    PMID: 19952261BACKGROUND
  • Clark BC, Manini TM, Hoffman RL, Williams PS, Guiler MK, Knutson MJ, McGlynn ML, Kushnick MR. Relative safety of 4 weeks of blood flow-restricted resistance exercise in young, healthy adults. Scand J Med Sci Sports. 2011 Oct;21(5):653-62. doi: 10.1111/j.1600-0838.2010.01100.x. Epub 2010 Mar 11.

    PMID: 21917016BACKGROUND
  • Madarame H, Sasaki K, Ishii N. Endocrine responses to upper- and lower-limb resistance exercises with blood flow restriction. Acta Physiol Hung. 2010 Jun;97(2):192-200. doi: 10.1556/APhysiol.97.2010.2.5.

    PMID: 20511128BACKGROUND

MeSH Terms

Interventions

Physical Therapy Modalities

Intervention Hierarchy (Ancestors)

TherapeuticsRehabilitation

Study Officials

  • Erickson Andrews, MD

    Henry Ford Health System

    PRINCIPAL INVESTIGATOR
0

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Patients will be assigned to the blood flow restriction augmented physical therapy group following surgery or will undergo the usual physical therapy. Various measurements will be taken at follow up appointments as well as patient reported outcomes and compared between the two groups.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

June 7, 2020

First Posted

July 30, 2020

Study Start

September 1, 2020

Primary Completion

March 25, 2022

Study Completion

March 25, 2022

Last Updated

February 2, 2023

Record last verified: 2023-01

Data Sharing

IPD Sharing
Will not share

Locations