Effects of Hip Abductor and External Rotator Strength Training in Patients With Patellofemoral Pain Syndrome

National Taiwan University

Status: Completed

Conditions: Patellofemoral Pain Syndrome

Treatments: Other: Additional Hip Muscle Strengthening to Leg Press Exercise; Other: Leg Press Exercise

Study type: Interventional

Funder types: Other

Identifiers

NCT00736736

200801069R

Details and patient eligibility

About

The first purpose was to compare the difference between leg press exercise(LPE) and additional hip abductor and external rotator muscle strength training to leg press exercise(LPE+HAE) in muscle strength, hip kinematics during step down, pain severity and function for patients diagnosed with patellofemoral pain syndrome. The second one was to discover the relationship between the change in muscle strength performance and the difference of hip joint kinematics post treatment.

Enrollment: 85 patients

Sex: All

Ages: 19 to 50 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patellofemoral pain syndrome ( Bilateral or unilateral)
• Special tests: crepitus during compression test, patellar grind test (Clarke's sign), pain during compression test, palpation ( at least 2 )
• Below 50 years old
• Pain :after long sitting, up/down stair, squat, kneeling, running & jumping ( at least 2 )
• Pain duration at least 1 month
• At least 1 item of PSS score more than 3 cm

Exclusion criteria

• Knee operation
• Central or peripheral neurological deficits
• Obvious knee joint or lower extremity malalignment
• People involved in competitive sports
• PSS sub-scale pain experienced last week more than 8cm
• Have been taking anti-inflammatory drugs , received anti-inflammatory injection or received other therapy for past 3 months

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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85 participants in 3 patient groups

Leg Press

Active Comparator group

Description:

Leg Press exercise for 3 times/week and sustain for 8 weeks.

Treatment:

Other: Leg Press Exercise

Hip Exercise

Experimental group

Description:

Additional hip abductor and hip external rotator strength training to leg press exercise for people in this group. All participants received exercise for 3 times per week for 8 weeks.

Treatment:

Other: Additional Hip Muscle Strengthening to Leg Press Exercise

Control

No Intervention group

Description:

Education was given during 8 weeks of study period. After 8 weeks of study, exercise was given as compensation.