Document Type : Observational studies
Authors
1
Demonstrator, Department of Physical Therapy for Musculoskeletal Disorders and its Surgeries, Faculty of Physical Therapy, Misr University for Science and Technology, Giza, Egypt.
2
Department of Physical Therapy for Musculoskeletal Disorders and its Surgeries, Faculty of Physical Therapy, Cairo University, Giza, Egypt
3
Department of Orthopedic Surgery, Faculty of Medicine, Misr University for Science and Technology, Giza, Egypt.
4
Department of Physical Therapy for Musculoskeletal Disorders and its Surgeries, Faculty of Physical Therapy, Cairo University, Giza, Egypt.
Abstract
Purpose: The aim of this study was to investigate the association between quadriceps strength and trunk flexor, extensor, rotator, and side bender strength in patients with patellofemoral pain syndrome (PFPS). Materials and Methods: Forty-four patients aged 18–35 years with PFPS were enrolled in a correlational study. Quadriceps and trunk muscle strengths were assessed using standardized handheld dynamometry protocols. The associations between trunk muscle groups and quadriceps strength were investigated using Pearson correlation analysis. Results: The findings demonstrated statistically significant strong positive correlations between quadriceps strength and all assessed trunk muscle groups. The highest association was noted. with trunk flexors (ρ= 0.858, p-value < 0.001), followed by trunk side benders (ρ= 0.797, p-value < 0.001), rotators (ρ= 0.741, p-value < 0.001), and extensors strength (ρ= 0.631, p-value < 0.001). Conclusion: These results indicate that greater quadriceps strength is associated with higher trunk muscle strength in PFPS patients, supporting the importance of integrating trunk strengthening into rehabilitation programs for optimal functional outcomes.
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