Association Between Ankle Dorsiflexion and Frontal Projection Angle in PFPS

NCT ID: NCT03897569

Last Updated: 2019-07-30

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 46 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2019-03-30
• Study Completion Date: 2019-07-01

Brief Summary

The study will investigate an association between ankle dorsiflexion and altered frontal knee kinematics during step down test in patients with PFPS.

Detailed Description

Altered frontal and transverse plane hip kinematics during single leg weight-bearing tasks are thought to be important contributors to patellofemoral pain (PFP). The closed chain nature of single leg tasks means that hip kinematics can be influenced by more distal mechanics, such as foot pronation.

One of the often-studied distal movements theorized to cause PFPS is pronation of the subtalar joint. Pronation is a tri-planar movement that includes dorsiflexion, eversion, and abduction of the foot. Many studies have examined eversion characteristics of PFPS patients, but the dorsiflexion aspect of the movement has been shown to be a possible risk factor, restricting dorsiflexion was shown to increase medial knee displacement in young healthy adults. Conversely, when available dorsiflexion ROM is increased, medial knee displacement is thought to decrease.

Patients with PFPS were observed to have a decreased DFROM (dorsiflexion range of motion) as compared to normal individuals, though this topic has not thoroughly been investigated.

Conditions

Patellofemoral Pain Syndrome

Study Design

• Observational Model Type: CASE_CONTROL
• Study Time Perspective: CROSS_SECTIONAL

Study Groups

patellofemoral pain syndrome

twenty subjects with anterior or retropatellar knee pain from at least 2 of the following Activities : (1) prolonged sitting; (2) stair climbing; (3) squatting; (4) running; (5) kneeling; and (6) hopping/jumping.

frontal projection angle, ankle dorsiflexion

Intervention Type: OTHER

Dorsiflexion measurements will be taken in 4 different positions and repeated and recorded 3 times in each position, Prone bent, straight knee and Standing bent, straight knee. Prior to the measurement, the participants completed two 30-second calf stretches The FPPA was determined as the angle at the knee formed by lines connecting the anterior superior iliac spine, the midpoint of the femoral condyles and the midpoint of the malleoli at the deepest part of the squat

control

twenty-six asymptomatic subject will be recruited for this study and should have no pain or other relevant clinical symptoms in the lower quadrant

frontal projection angle, ankle dorsiflexion

Intervention Type: OTHER

Dorsiflexion measurements will be taken in 4 different positions and repeated and recorded 3 times in each position, Prone bent, straight knee and Standing bent, straight knee. Prior to the measurement, the participants completed two 30-second calf stretches The FPPA was determined as the angle at the knee formed by lines connecting the anterior superior iliac spine, the midpoint of the femoral condyles and the midpoint of the malleoli at the deepest part of the squat

Interventions

frontal projection angle, ankle dorsiflexion

Dorsiflexion measurements will be taken in 4 different positions and repeated and recorded 3 times in each position, Prone bent, straight knee and Standing bent, straight knee. Prior to the measurement, the participants completed two 30-second calf stretches The FPPA was determined as the angle at the knee formed by lines connecting the anterior superior iliac spine, the midpoint of the femoral condyles and the midpoint of the malleoli at the deepest part of the squat

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

1. Anterior or retropatellar knee pain from at least 2 of the following Activities : (1) prolonged sitting; (2) stair climbing; (3) squatting; (4) running; (5) kneeling; and (6) hopping/jumping.

2. Insidious onset of symptoms unrelated to a traumatic incident and persistent for at least 6weeks.

3. VAS equal to or greater than 3.

4. Age of the subject 18-35 years to limit the possibility that PFPS over age 35 may have been complicated by arthritic changes, and also the subjects should have closed epiphyseal growth plates.

5. BMI under 30 kg/m2, both gender

For the control group, subjects were recruited to this study if they had:

1. No previous history or diagnosis of knee pathology.

2. No pain with any of the above-mentioned provocative activities.

3. No history of lower limb or spinal pathology.

Exclusion Criteria

1. A history of any of the following condition: meniscal or other intraarticular pathologic conditions; cruciate or collateral ligament involvement.

2. A history of traumatic patellar subluxation or dislocation.

3. Previous surgery in the lower extremities within the 12 months prior to participation in the study.

4. Any balance impairments are secondary to a vestibular or neurological disorder or secondary to the use of medication.

5. Any lower limb bony/congenital deformity

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 35 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Cairo University

OTHER

Sponsor Role: lead

Responsible Party

Karima Abdelaty Hassan

principal investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

karima A Hassan, PhD

Role: PRINCIPAL_INVESTIGATOR

Cairo University

Locations

Faculty of Physical therapy, Cairo University

Cairo, , Egypt

Countries

Egypt

Other Identifiers

PFPS kinematics

Identifier Type: -

Identifier Source: org_study_id