CClinicalTrials.gg
TerminatedNCT03025412Updated Feb 22, 2024

A Comparison of Endoscopic Surgery and Exercise Therapy in Patients With Longstanding Achilles Tendinopathy

An interventional study of endoscopic surgery and physiotherapy and exercise in Tendinopathy, sponsored by Norwegian University of Science and Technology. Terminated at 1 site in Norway. Open to participants aged 20 Years to 65 Years. Per ClinicalTrials.gov, last updated 2024-02-22.

Sponsored by Norwegian University of Science and Technology · Not applicable, Interventional, and Treatment

Why this study was terminated
recruitment difficulties due to recently introduced new surgical procedure
Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Randomized
Ages
20 Years to 65 Years
Sex
All
01

Study summary

Exercise is a preferred treatment modality for mid-portion achilles tendinopathy. Despite this, as many as 44 % of achilles tendinopathy patients do not respond to exercise treatment.

Surgery for midportion achilles tendinopathy has for many years been done as an open procedure. New knowledge resulted in a variety of minimally invasive procedures and the development of endoscopic surgery.

In this study, the effect of non-open surgery and conservative treatment (physiotherapy and exercises) will be compared.

02

Conditions studied

  • Tendinopathy

Browse trials for

Keywords

  • Achilles Tendon
  • Endoscopy
  • Minimally Invasive Surgical Procedures
  • Exercise therapy
03

In context

Tendinopathy

413 studies on the registry are indexed under Tendinopathy; 64 are open to participants now.

This study's enrollment of 10 is below the median of 50 across 339 interventional studies indexed under Tendinopathy.

Browse Tendinopathy studies →

Lead sponsor

Norwegian University of Science and Technology is the lead sponsor of 487 studies on the registry; 52 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • diagnosis of mid-portion achilles tendinopathy
  • pain during at least 3 months
  • decreased function (a score less than 80 on VISA-A)

Exclusion criteria

Exclusion Criteria:

  • Physiotherapy during previous three months
  • history of major achilles trauma
  • cardiovascular, respiratory, systemic, or metabolic conditions limiting exercise tolerance
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
10 participants (actual)

Study arms

  • Experimental
    Endoscopic surgery

    Ambulatory surgery. Postoperative rehabilitation. From week 6 postoperative the patients start the same exercise regimen as the conservative treatment group.

    Procedure: endoscopic surgery · Behavioral: physiotherapy and exercise

  • Active comparator
    Conservative treatment

    Physiotherapy and exercise. First physiotherapy consultation: Information, advice, instructions. Exercise regime during 12 weeks in three phases.

    Behavioral: physiotherapy and exercise

Interventions

  • Procedureendoscopic surgery

    Ambulatory surgery. Same surgeon for all patients. General anesthesia. Full debridement of the paratenon and crural fascia. Also the plantaris longus tendon is debrided, but no additional tenotomy executed. Postoperative rehabilitation. Oral nonsteroidal anti-inflammatory drugs 7 days postoperatively. Active ankle dorsiflexion and plantar flexion from day 1 postoperative. Partly weight bearing (30 kg) from day 1 postoperative. Full weight bearing allowed from week 3 postoperative. Gradually increased load, both in activity of daily living, stationary bike and stretching, with individually and pragmatic progression due to pain response. From week 6 postoperative the patients start the same exercise regimen as the conservative treatment group.

  • Behavioralphysiotherapy and exercise

    Exercise schedule: Weeks 1-6, Eccentric unilateral loading while standing on the step of a staircase performed in two exercises; with straight knee and with bent knee. Weeks 7-9, Eccentric - Concentric loading while standing on the step of a staircase performed with straight knee and bent knee. Dose: 15 repetitions x 3 performed with straight knee, and 15 repetitions x 3 performed with bent knee. 3 - 4 times a week. Weeks 10-12, Eccentric - Concentric loading while standing on the step of a staircase performed with straight knee and bent knee. Dose: 15 repetitions maximum (15RM) x 3 performed with straight knee, and 15 RM x 3 performed with bent knee. 3 - 4 times a week. One leg performance or hand hold weight for extra load is used to obtain the exact number of RM.

06

What researchers measure

Primary outcomes

  1. pain using The Victorian Institute of Sports Assessment - Achilles

    Time frame: 3 months (immediately following 12 week exercising)

  2. pain using The Victorian Institute of Sports Assessment - Achilles questionnaire (VISA-A)

    Time frame: 6 months after 12 week exercising

Secondary outcomes

  1. pain using a numeric rating scale (NRS)

    Time frame: 3 months (immediately following 12 week exercising

  2. pain using a numeric rating scale (NRS)

    Time frame: 6 months after 12 week exercising

  3. Hospital Anxiety and Depression Scale (HAD)

    Time frame: 3 months (immediately following 12 week exercising)

  4. Hospital Anxiety and Depression Scale (HAD)

    Time frame: 6 months after 12 week exercising

  5. Tampa Scale of Kinesiophobia [TSK]

    Time frame: 3 months (immediately following 12 week exercising)

  6. Tampa Scale of Kinesiophobia [TSK]

    Time frame: 6 months after 12 week exercising

  7. Patient-clinician therapeutic relationship

    assessed by Scale To Assess Therapeutic Relationships in Community Mental Health Care (STAR)

    Time frame: 3 months (immediately following 12 week exercising)

  8. Patient-clinician therapeutic relationship

    assessed by Scale To Assess Therapeutic Relationships in Community Mental Health Care (STAR)

    Time frame: 6 months after 12 week exercising

  9. Maximal strength (one repetition maximum, 1RM)

    Measures of maximal strength will be conducted in the following manner; participants do a warm up routine where they perform 8-15 repetitions with a comfortable load. This is performed in a leg-press machine. The load is gradually increased, and the participant performs the exercise once per attempt. 3 minutes break are given in between each attempt. The heaviest load the participants manages to lift is their 1RM, and is planned to be achieved within 3-6 attempts.

    Time frame: 3 months (immediately following 12 week exercising)

  10. Maximal strength (one repetition maximum, 1RM)

    Measures of maximal strength will be conducted in the following manner; participants do a warm up routine where they perform 8-15 repetitions with a comfortable load. This is performed in a leg-press machine. The load is gradually increased, and the participant performs the exercise once per attempt. 3 minutes break are given in between each attempt. The heaviest load the participants manages to lift is their 1RM, and is planned to be achieved within 3-6 attempts.

    Time frame: 6 months after 12 week exercising

  11. Time-to-exhaustion

    A time-to-exhaustion test will be performed by the participants, with the same movement as described for the 1RM-test. If there is bilateral pain, the most painful side will be tested. The plantar flexion movement will be performed with a frequency of 0.5 Hz, starting with a load of 5 kg. Each minute additional 5 kg will be added until exhaustion is achieved or pain exceeds 5 on a VAS-scale. This is a common test in studies where one wish to assess aerobic endurance capacity.

    Time frame: 3 months (immediately following 12 week exercising)

  12. Time-to-exhaustion

    A time-to-exhaustion test will be performed by the participants, with the same movement as described for the 1RM-test. If there is bilateral pain, the most painful side will be tested. The plantar flexion movement will be performed with a frequency of 0.5 Hz, starting with a load of 5 kg. Each minute additional 5 kg will be added until exhaustion is achieved or pain exceeds 5 on a VAS-scale. This is a common test in studies where one wish to assess aerobic endurance capacity.

    Time frame: 6 months after 12 week exercising

  13. Physical activity level

    measured by accelerometer

    Time frame: 6 months follow-up after rehabilitation

07

Study locations

1 site
  • Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Sciences
    Trondheim, Norway
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 22, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03025412
Lead sponsor
Norwegian University of Science and Technology
Responsible party
Sponsor
First posted
Jan 19, 2017
Start date
Apr 19, 2017
Primary completion
Dec 1, 2018
Completion
Dec 1, 2018
Last update
Feb 22, 2024

Study contacts

Jorunn Helbostad, prof
study director · Norwegian University of Science and Technology

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Feb 2024. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion