To Investigate the Effect of Condylar Remodeling Exercises on Proprioception of Neck and Temporomandibular Joint in Cranio-cervico-mandibular Malalignment.

June 8, 2026 updated by: Walaa Mohsen Mohammed, Cairo University

Effect of Condylar Remodeling Exercises on Proprioception of Neck and Temporomandibular Joint in Cranio-cervico-mandibular Malalignment: A Randomized, Double-blind, Controlled Trial

Cranio-cervico-mandibular (CCM) malalignment is associated with forward head posture (FHP) and tempromandibular joint (TMJ) disorders and affects masticatory muscles. Patients who present with dysfunctions of CCM malalignment can be treated effectively by a physical therapist who has specialized skills and experiences. A temporomandibular joint exercise developed by Rocabado called "Condylar remodeling exercises" considered as a new method for treatment of such cases. Those exercises stimulate mechanoreceptors that converts mechanical energy of physical deformation into action nerve potential yielding proprioceptive information, detecting change and rate of change, as opposed to steady state conditions. This input was analyzed in the central nervous system for joint position and movement influences muscle tone, motor execution programes and kinesthetic awareness around temporomandibular joint protecting joint from damage and helps to restore appropriate balance of synergistic and antagonistic forces. Although condylar remodeling exercises has been used in clinical practice, limited evidence exists to support such a treatment approach. So, the current study will conduct to investigate the effect of Condylar Remodeling Exercises on proprioception of neck and TMJ in CCM malalignment

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

To determine if there is an effect for the effect of Condylar Remodeling Exercises on proprioception of neck and TMJ in CCM malalignment. 40 of both sexes will participate in this study. Assessment of all participants will be carried out before and after the treatment program. Outcome measures will include assessment of neck proprioception, Temporomandibular joint position sense, cranio-vertebral angle, active pain-free mouth opening, pain assessment.A total of 40 subjects of both sexes having CCM malalignment will be recruited in this study. They will be randomly assigned to one of the following groups: Study group include 20 subjects will receive Condylar remodeling exercises in addition to postural correction Exercise, Control group: include 20 subjects will receive postural correction Exercise only. All subjects in both groups will receive the exercise program 3 days a week for four weeks.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
40

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

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Study Contact

Study Contact

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Study Locations

  • Egypt
      • Giza, Egypt
        • Misr University for Science and Technology

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • The participants will be excluded if they:

    1. The patient's ages from 18 to 40 years
    2. having TMD symptoms sustained for at least twelve weeks duration established by expert physician or orthopaedician.
    3. having forward head posture with CVA < 53o.
    4. mouth opening < 25mm.
    5. Pain level greater than 20 mm and less than 80 mm on Numeric Rating Scale (NRS).

Exclusion Criteria:

  • (1) TMJ fracture undergone any surgical procedure for TMJ; (2) Fracture surrounding TMJ; (3) Dislocation or subluxation of TMJ; (4) Systemic joint diseases including rheumatoid arthritis and osteoporosis, congenital conditions orofacial paralysis; (5) recent dental work or TMJ surgery; (6) Hematological cervical disorders which may affect the jaw; (7) Neurological deficits e.g. Bells palsy, Trigeminal neuralgia;(8) Recent infections affecting head and neck (within the last six months) e.g. bone infections, meningitis, encephalitis, malaria, ear infection; (9) Participants who were using any functional appliances e.g.dentures, braces, bite appliances altered or fitted within the previous 12 weeks prior to the commencement of this study; (10) Patients who underwent any physical therapy treatment within the last 2 weeks before the trial; (11) Internal derangement, including disc displacement with or without reduction

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Study group (Condylar remodeling exercises in addition to postural correction Exercise
Study group include 20 subjects will receive Condylar remodeling exercises in addition to postural correction Exercise,
Other: Condylar remodeling exercises Included 1)Range of motion phase, 2)Bite phase, 3)Bite return phase, 4)Protrusion, 5)isometric contraction phase Tubing distraction phase
A temporomandibular joint exercise developed by Rocabado called "Condylar remodeling exercises" considered as a new method for treatment of such cases. Those exercises stimulate mechanoreceptors that converts mechanical energy of physical deformation into action nerve potential yielding proprioceptive information, detecting change and rate of change, as opposed to steady state conditions. This input was analysed in the central nervous system for joint position and movement influences muscle tone, motor execution programmes and kinaesthetic awareness around temporomandibular joint protecting joint from damage and helps to restore appropriate balance of synergistic and antagonistic forces. Although condaylar remodling exercises has been used in clinical practice, limited evidence exists to support such a treatment approach
Other: Postural correction exercises Kendall exercises

Kendall exercises were performed as follows:

  1. Strengthening the deep cervical flexors: The patient was asked to do a flat-back, chin-down position and hold this position for 2-8 seconds
  2. Stretching the cervical extensors: The patient was asked to place one hand on the occipital area and other on the chin in a seated position, then a head-down, flexed neck position to stretch the cervical extensors.
  3. Strengthening shoulder retractors: This exercise was done in order to move the shoulder blades towards one another while standing, the patient was instructed to wrap red (medium) Theraband around a stable item and then draw the band back as far as they could with both hands.
  4. Stretching of the pectoralis major muscle: The therapist stood behind the patient and held both elbows and performed bilateral pectoralis stretching. To stretch the costal division, the arm should be elevated to approximately 135 degrees. For sternal division, the arm abducted to 90 degrees. For clavicula
Active Comparator: Control group (postural correction Exercise only)
Control group: include 20 subjects will receive postural correction Exercise only
Other: Postural correction exercises Kendall exercises

Kendall exercises were performed as follows:

  1. Strengthening the deep cervical flexors: The patient was asked to do a flat-back, chin-down position and hold this position for 2-8 seconds
  2. Stretching the cervical extensors: The patient was asked to place one hand on the occipital area and other on the chin in a seated position, then a head-down, flexed neck position to stretch the cervical extensors.
  3. Strengthening shoulder retractors: This exercise was done in order to move the shoulder blades towards one another while standing, the patient was instructed to wrap red (medium) Theraband around a stable item and then draw the band back as far as they could with both hands.
  4. Stretching of the pectoralis major muscle: The therapist stood behind the patient and held both elbows and performed bilateral pectoralis stretching. To stretch the costal division, the arm should be elevated to approximately 135 degrees. For sternal division, the arm abducted to 90 degrees. For clavicula

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Temporomandibular joint position sense (TMJPS)
Time Frame: 24 hours from first and last session
For the TMJPS measurement, a 6 mm-thick wooden reference stick and 9 wooden test sticks from 4 mm to 8 mmin thickness (increment 0.5 mm) will be used. First, the participants will be asked to sense the position by biting the 6 mm thick reference test stick with their front teeth for 1 minute. Then, they will be asked to randomly bite each of the 9 test sticks and compare each of them with the 6 mm reference test stick. Each of the test sticks will be administered in a random order 5 times (45 tests in total). The participants will be asked how thick they felt compared to the reference stick that they have bitten down on and indicated their answers as "thinner", "thicker" or "equal". During the test, the participant's eyes will be closed, and the answers give about the stick thicknesses will be recorded as true (1 point) or false (0 points).
24 hours from first and last session
Active pain-free mouth opening
Time Frame: 24 hours from first and last session
In a supine position, participants will be asked to 'open the mouth as wide as possible without causing pain'. At the end position of pain-free mouth opening, the distance between upper-lower central incisors was measured in millimeters. The mean of three trials was calculated and used for the main analysis. Active pain-free mouth opening will be assessed pre-intervention, 48 h after the last treatment (post-intervention) and at 12-week follow up period.
24 hours from first and last session

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Cairo University

Publications and helpful links

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General Publications

Study record dates

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Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 20, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 20, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 20, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 8, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 8, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 11, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 11, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 8, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Condylar Remodeling Exercises

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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