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CompletedNCT02498704Updated Feb 23, 2016

Dry Needling and Stretching vs. Stretching Alone on Hamstring Flexibility in Patients With Knee Pain

An interventional study of Dry Needling and Sham Needling in Mobility Limitation, sponsored by Keller Army Community Hospital. Completed at 1 site in United States. Open to participants aged 18 Years to 40 Years. Per ClinicalTrials.gov, last updated 2016-02-23.

Sponsored by Keller Army Community Hospital · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
39
Allocation
Randomized
Ages
18 Years to 40 Years
Sex
All
01

Study summary

The purposes of this double-blinded, randomized controlled trial are (1) to determine if the addition of trigger point dry needling (TDN) to a standard stretching program results in greater improvements in hamstring flexibility versus stretching alone in a population with atraumatic knee pain; (2) measure length of time that flexibility gains are maintained, (3) assess resulting movement mechanics and (4) assess patient reported changes in pain. Findings will potentially lead to insights as to the benefit of applying this intervention to additional body regions.

Read the detailed description

In this study, up to 40 subjects with a history of atraumatic knee pain will be randomized into 2 groups of up to 20 subjects per group (1 experimental group and 1 control group). Subjects in the experimental group will receive TDN intervention with hamstring stretching while subjects in the control group will receive an alternative needling intervention with hamstring stretching. After meeting all inclusion criteria, all subjects will undergo the following tests: supine active knee extension, the active straight leg raise test, deep squat, and a single leg step down from a 6 inch step. Subjects who measure less than 20° from full extension on the active knee extension test will be excluded. Hamstring tightness has been operationally defined as having greater than 20° loss of knee extension as measured with the femur held at 90° of hip flexion.[1] Manual palpation of the bilateral biceps femoris, semitendinosus, and semimembranosus will be performed to detect the presence of myofascial trigger points (TPs) in groups 1 and 2. Dry needling will be performed to all detected TPs by a provider trained and experienced in TDN. Post TDN, all tests will be immediately repeated and at each follow up the subject will complete the Global Rating of Change survey (GROC) and Lower Extremity Functional Scale (LEFS).

Post intervention, subjects in experimental group 1 will be given a standing hamstring stretch to perform 1 repetition held for 30 seconds, repeated 3 times daily. These parameters have been shown to be effective at improving flexibility.[2] Subjects will be instructed by demonstration and will be provided with a handout of stretching instructions. Subjects will be given an exercise log to record home exercise compliance.

Subjects in group 2 will be given an alternative needling intervention followed by a standing hamstring stretch to perform 3 times per day, 1 repetition held for 30 seconds. Alternative needling intervention will be performed to give the appearance of regular TDN intervention; however, no needle penetration will be performed. Following alternative needling intervention, subjects will be instructed by demonstration and will be provided with a handout of hamstring stretching instructions. Home exercise compliance will be recorded at each follow up.

Follow up measurements will be recorded between 1-2 days, 3-4 days, and 7-8 days post intervention. All tests will be repeated. One additional session of TDN and alternative needling intervention will be performed at day 3-4.

02

Conditions studied

  • Mobility Limitation

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03

In context

Mobility Limitation

317 studies on the registry are indexed under Mobility Limitation; 97 are open to participants now.

This study's enrollment of 39 is below the median of 46 across 265 interventional studies indexed under Mobility Limitation.

Browse Mobility Limitation studies →

Lead sponsor

Keller Army Community Hospital is the lead sponsor of 18 studies on the registry; 1 is open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 40 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Department of Defense healthcare beneficiaries
  • 18-40 years old
  • atraumatic knee pain greater than 2 weeks in duration
  • Lack of 20 degrees or more of active supine knee extension

Exclusion criteria

Exclusion Criteria:

  • History of herniated lumbar disc/radiculopathy
  • Prior surgery in the hip, knee or back
  • Self-Reported Pregnancy
  • History of blood borne pathogens/infectious disease/active infection/metal allergy
  • Knee pain of traumatic origin, instability, joint line tenderness, or positive meniscal tests
  • Participants who are not fluent in English
  • Previous history of TDN
  • Bleeding disorders or currently taking anti-coagulant medications
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
39 participants (actual)

Study arms

  • Sham comparator
    Sham Needling intervention, Control

    Sham dry needling, group does not receive true dry needling intervention.

    Other: Sham Needling

  • Experimental
    Dry Needling Intervention, experimental

    Group receives true dry needling intervention.

    Procedure: Dry Needling

Interventions

  • ProcedureDry Needling

    Trigger point dry needling to hamstring muscle group.

  • OtherSham Needling

    Superficial palpation of trigger point, skin is not punctured.

06

What researchers measure

Primary outcomes

  1. Knee extension range of motion

    Assessed with active supine knee extension and supine straight leg raise using digital inclinometer

    Time frame: 7-8 days

Secondary outcomes

  1. knee pain with squat recorded on visual analog scale

    Time frame: 7-8 days

  2. knee pain with step down test recorded on visual analog scale

    Time frame: 7-8 days

  3. lower extremity functional scale (LEFS)

    Self Report Functional Outcome measure

    Time frame: 7-8 days

  4. Global Rating of Change

    Self Report Functional Outcome measure

    Time frame: 7-8 days

  5. knee range of motion during squat

    knee flexion measured with standard goniometer during squat

    Time frame: 7-8 days

07

Study locations

1 site
  • Keller Army Community Hospital
    West Point, New York 10996, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 23, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02498704
Lead sponsor
Keller Army Community Hospital
Responsible party
John Mason (Sports Physical Therapy Fellow, Keller Army Community Hospital) — Principal investigator
First posted
Jul 15, 2015
Start date
Nov 2014
Primary completion
Sep 2015
Completion
Oct 2015
Last update
Feb 23, 2016

Study contacts

John Mason, DPT
principal investigator · Keller Army Community Hospital

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2016. You cannot join it, but the record below documents what was studied.

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