This study will be conducted to investigate the relationship between knee joint pain intensity and joint position sense accuracy in patients with patellofemoral pain syndrome (PFPS) in a single-leg squat position.
Age ranges from 18-35 years
BMI ranges from 18-25 kg/m2
Positive eccentric step test
Anterior or retropatellar knee pain present during at least two of the following - ascending/descending stairs, hopping/running, squatting, kneeling and prolonged sitting
Knee pain is more than 6 score on ANPRS.
History of traumatic patellar dislocation or subluxation
Osteoarthritis in the knee, ankle or hip joints, injury of cruciate ligaments or menisci
Previous orthopedic disorders or neurologic deficit of the lower limbs, any sensory problems, leg length discrepancy, neuromuscular disease like multiple sclerosis
eighty two patellofemoral pain syndrome had Positive eccentric step test,Anterior or retropatellar knee pain present during at least two of the following - ascending/descending stairs, hopping/running, squatting, kneeling and prolonged sitting and Pain on palpation of patellar facets. their ages between 18-35 years old.
Other
Cross-sectional
patellofemoral pain syndrome patients
Other interventioneighty two patellofemoral pain syndrome had Positive eccentric step test,Anterior or retropatellar knee pain present during at least two of the following - ascending/descending stairs, hopping/running, squatting, kneeling and prolonged sitting and Pain on palpation of patellar facets. their ages between 18-35 years old.
pain intensity
nemerial pain rating scale will be used to assess pain intensity. It comprises of 11 point ''horizontal scale'' of 0-10 in Arabic numerals anchored by the two ends, the left (0 indicating no pain at all) and right (10 indicating the worst ).
knee disability
The Arabic version of the Kujala patellofemoral pain scoring system is a questionnaire to assess the patient with PFP. It includes 13 points based on the following factors: presence of a limp, need for support, walking ability, stair climbing, squatting, running, jumping, prolonged sitting with knees flexed, pain, swelling, abnormal painful kneecap movement, atrophy of the thigh, and flexion deficiency. Each question has multiple answers with points reflecting the severity of symptoms and level of functional limitation. Each question is assigned a score of either up to 5 or 10, and the total score for the Kujala questionnaire is 100. The higher the score, the better the function
knee joint position error (knee joint proprioception)
Digital-goniometer will be used to assess joint position error.the digital-goniometer will be attached to the knee joint in the neutral knee position. The fixed arm will be placed in parallel to an imaginary line between the head of the fibula and the lateral malleolus. The movable arm will be placed in parallel to an imaginary line between the greater trochanter and the lateral condyle of the femur. The digital-goniometer will be zeroed when the subject is standing motionless in the anatomic position. To prevent slippage during knee joint motion, the end blocks will be adhered to the tested leg with double-sided adhesive tape and further secured in place with adhesive tape. Digital-goniometer readings records knee joint angular displacements relative to zero
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