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CompletedNCT05125289Updated Nov 9, 2022

Comparison of Soft Tissue Techniques on Hamstring Flexibility Knee Osteoarthritis

An interventional study of Graston technique group and Active release technique group in Knee Osteoarthritis, sponsored by Riphah International University. Completed at 1 site in Pakistan. Open to participants aged 30 Years to 50 Years. Per ClinicalTrials.gov, last updated 2022-11-09.

Sponsored by Riphah International University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
45
Allocation
Randomized
Ages
30 Years to 50 Years
Sex
All
01

Study summary

The aim of this research is to compare the effects of Graston Technique, active release technique and PNF stretching on hamstring flexibility in Patients with Knee Osteoarthritis. Randomized controlled trials done at Riphah International University, Islamabad.. The sample size was 45. The subjects were divided in three groups, 15 subjects in Graston Technique group, 15 subjects in active release technique group and 15 in PNF stretching group. Study duration was of 6 months. Sampling technique applied was non probability purposive sampling technique. Male and female patients greater than 30 years of age, with unilateral or bilateral OA of grade 1 and 2 in Kellegren and Lawrence criteria for knee OA, having UL/BL hamstring tightness, Pain > 3 on NPRS, ROM > 200 from AKE test were included.

Tools used in the study are NPRS, AKE test by goniometer, Lower extremity functional index (LEFI) and WOMAC.

Read the detailed description

Osteoarthritis (OA) is the most common form of arthritis, affecting an estimated 302 million people worldwide. It is expected that ten percent males and 18 percent females have knee or hip OA. It ranks as the fifth highest cause of years lost to disability in the whole population in high-income countries, and the ninth highest cause in low- and middle-income countries. In older people, OA is the utmost devastating musculoskeletal syndrome.

It is a long-term chronic disease characterized by the destruction of articular cartilage and underlying bone. The degeneration occurs due to disarrangement in the usual process of repair of a joint. When the process breaks the synchronicity, there is slow deterioration of the articular cartilage. As a result, the biomechanical influences on the joints are also changed due to loss of normal joint line of gravity. This ultimately leads toward symptomatic changes which are a focal loss of the cartilage covering the articular ends; loss of normal joint space requires for smooth grating, osteophyte formation in joint, and remoulding of bone on peripheral areas and along the articular sides. Signs and symptoms are pain, a restricted range of joint movement, reduced muscle strength, restricted activities of daily living (ADLs) and instrumental activities of daily living (IADLS), and reduced quality of life.

Exercise, weight loss in patients with knee and/or hip OA who are overweight or obese, self-efficacy and self-management programs, tai chi, cane use, hand orthoses for first carpometacarpal (CMC) joint OA, tibiofemoral bracing for tibiofemoral knee OA, topical nonsteroidal anti-inflammatory drugs (NSAIDs) for knee OA, oral NSAIDs, and intraarticular glucocorticoid injections for knee OA are strongly recommended for treatment purposes. One major problem for patients with knee OA is poor hamstring flexibility. The stretching of the hamstring is a necessary intervention in the management of the OA knee. Although research and clinical experience has shown that treatment of hamstring flexibility is important, there is no widely acceptable form of treatment that is agreed upon to successfully improve flexibility of hamstrings.

Instrument assisted soft tissue mobilization (IASTM) using Graston technique is a popular treatment for myofascial restriction. The IASTM treatment is thought to stimulate connective tissue remodeling through resorption of excessive fibrosis, along with inducing repair and regeneration of collagen secondary to fibroblast recruitment. In turn, this will result in the release and breakdown of scar tissue, adhesions, and fascial restrictions.

Active release technique (ART) is also a technique that involves breaking down adhesions and scar tissue which cause pain and dysfunctions. It involves a clinician using their thumbs or fingers to apply deep tension to a trigger point while the involved tissue is moved from a shortened to lengthened position both actively by the patient and passively by the clinician.

Proprioceptive Neuromuscular Facilitation (PNF) stretching technique is another technique utilized to improve muscle elasticity. This technique is specifically designed to stimulate mechanoreceptors and significant effect of static as well as PNF stretching on clinical symptoms of knee OA.

02

Conditions studied

  • Knee Osteoarthritis

Keywords

  • Active release technique
  • Graston technique
  • Knee Osteoarthritis
  • PNF stretching
  • Hamstring tightness
03

In context

Osteoarthritis

4,398 studies on the registry are indexed under Osteoarthritis; 582 are open to participants now.

This study's enrollment of 45 is below the median of 70 across 3,440 interventional studies indexed under Osteoarthritis.

Browse Osteoarthritis studies →

Lead sponsor

Riphah International University is the lead sponsor of 2,133 studies on the registry; 633 are open to participants now.

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

04

Who can participate

Ages eligible
30 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Aged > 30years. Both male \& female. Uni/bilateral OA. Grade I or II OA. Uni/bilateral hamstring tightness ranging between 40 to 70 degrees of a straight leg raise.

Exclusion criteria

Exclusion Criteria:

  • Hamstring injury and strains within 2 months. Any skin infections History of any lower limb surgeries within last 6 months. Lumber disc herniation. Lower limb neurological compromise.
05

Study design

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

Study arms

  • Experimental
    experimental intervention group 1

    Graston technique group

    Other: Graston technique group

  • Experimental
    Experimental :interventional group II

    Active release technique group

    Other: Active release technique group

  • Experimental
    experimental group III

    Proprioceptive Neuromuscular Facilitation stretching group

    Other: Proprioceptive Neuromuscular Facilitation stretching group

Interventions

  • OtherGraston technique group

    Moist hot pack (10 minutes) Isometric quadriceps exercises (10 repetitions) Straight leg raise (10 repetitions) Graston technique steps 6 long strokes by the GT1 instrument on the hamstring muscle longitudinally. The Graston technique duration will be 5 minutes

  • OtherActive release technique group

    * Moist hot pack (10 minutes) * Isometric quadriceps exercises (10 repetitions) * Straight leg raise (10 repetitions) ART steps: * Subject lies on the plinth in prone or in side lying position with the dominant side facing upwards. * Gentle tension is applied to the hamstring muscle along the entire length while stretching the leg in prone lying or side lying positions, depending on the level of pain and tightness of muscle (5 repetitions at 5 seconds interval). * Gentle tension is also applied at the origin and insertion of the hamstring muscle until the patient feels full release.

  • OtherProprioceptive Neuromuscular Facilitation stretching group

    * Moist hot pack (10 minutes) * Isometric quadriceps exercises (10 repetitions) * Straight leg raise (10 repetitions) PNF technique steps: * The subject is in supine position with his non-dominant leg strapped down the table while the dominant leg rests on the therapist right shoulder. * The therapist stretches the hamstring muscle until the subject first reports a mild stretch sensation; held for 7 sec by passively flexing the hip with knee fully extended, allowing no hip rotation. * Next, the subject isometrically contracts the hamstring muscle for 3 sec and then relax for 5 sec. * This sequence is repeated 5 times at a 20 second interval.

06

What researchers measure

Primary outcomes

  1. WOMAC

    WOMAC was used for evaluating Osteoarthritis patients. The WOMAC OA index included 24 questions and three sections that questioned pain, stiffness, and physical function. The scale included five pain-related questions, two stiffness-related questions, and 17 physical function- related questions. The maximum scores were 20 for the pain subgroup, eight for the stiffness subgroup and 68 for the physical function subgroup. High scores indicated that the patient had worse symptoms in the relevant group.

    Time frame: 4th week

Secondary outcomes

  1. Numeric pain rating scale (NPRS)

    NPRS was used for one-dimensional pain measurement It was an 11-item scale in which respondents selected the whole number from 0 to 10 to best describe their pain intensity in the last 24 hours. 0 represented no pain and 10 represented the worst possible pain experienced by the respondent. It had a reliability of 0.96 in literate and 0.95 in illiterate patients and had 0.86 - 0.95 validity.

    Time frame: 4th week

  2. Active Knee Extension Test

    The AKET measured hamstring muscle length. In the AKET, the patient actively extended the knee until reaching maximal stretch of the hamstring while the ipsilateral hip was kept at a fixed angle, usually 90 or 120 degrees of flexion.

    Time frame: 4th week

  3. Lower extremity functional index

    The lower extremity functional scale is a well-known and validated patient-rated outcome measure (PROM) that was used to measure lower extremity function. The score consisted of 20 questions, which were subdivided into 4 groups. These groups consisted of activities with increasing physical demands. Questions on activity varied from walking between rooms to running on uneven ground.

    Time frame: 4th week

07

Study locations

1 site
  • Railway General Hospital
    Rawalpindi, Punjab 46000, Pakistan
08

References and documents

Individual participant data

Plan to share: No

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 Nov 9, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05125289
Lead sponsor
Riphah International University
Responsible party
Sponsor
First posted
Nov 18, 2021
Start date
Dec 1, 2021
Primary completion
Jul 20, 2022
Completion
Aug 1, 2022
Last update
Nov 9, 2022

Study contacts

Aisha Razzaq, MSPT-OMPT
principal investigator · Riphah International University

Oversight

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

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