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Is Cam Pincer Deformity a Predisposing Factor for Patellofemoral Pain Syndrome?

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Indian Journal of Orthopaedics Aims and scope Submit manuscript

Abstract

Purpose

This study aimed to investigate whether cam and pincer deformities (CPDs) are a risk factor for patellofemoral pain syndrome (PFPS) in women. In addition, it sought to compare the hip joint range of motion and the hip muscle strength of extremities with and without CPDs and PFPS.

Materials and Methods

A total of 82 hips of 41 women with PFPS were included in the study. The mean age of participants was 32.07 ± 7.13 years. The presence of CPDs was detected on digital anterior pelvis radiographs. Pain was evaluated using the visual analog scale, and function using the Kujala scoring system. Maximum isometric muscle strength around the hips was measured using a hand-held dynamometer. Hip joint range of movement angles were measured in all three planes using a universal goniometer.

Results

CPDs were found to predict PFPS in women (p = 0.011, p = 0.048). The rate of CPDs was significantly higher in extremities with PFPS compared to those without PFPS (p = 0.007). The Kujala scores of extremities with cam deformity were significantly lower than those of extremities without pincer deformity (p = 0.043). The internal/external muscle strength ratio was greater, and the abduction/adduction muscle strength ratio was lower in extremities with cam and PFPS than in those without (p = 0.040, p = 0.049). The external rotation and abduction range of movement angles were significantly smaller in extremities with pincer and PFPS compared to those without (p = 0.043, p = 0.035).

Conclusion

CPDs may be a structural predisposing factor in the development of PFPS in women. CPDs assessment when evaluating predisposing factors for PFPS may present an opportunity for the management of PFPS.

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We affirm that we have no financial affiliation (including research funding) or involvement with any commercial organization that has a direct financial interest in any matter.

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Authors and Affiliations

  1. Department of Occupational Therapy, Faculty of Health Science, Karatekin University, Çankırı, Turkey

    Tuğba Arslan

  2. Department of Orthopedics and Traumatology, Konya City Hospital, Konya, Turkey

    Muhammet Zeki Gültekin

  3. Aksu Mah. Sıhhıye Sok. No:11 18200, Çankırı, Turkey

    Tuğba Arslan

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  1. Tuğba Arslan
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  2. Muhammet Zeki Gültekin
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Correspondence to Tuğba Arslan.

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The research was carried out by the Declaration of Helsinki and received ethical compliance according to the decision numbered 2022/219 and dated 11.05.2022 from Necmettin Erbakan Health Science Ethical Committee.

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Arslan, T., Gültekin, M.Z. Is Cam Pincer Deformity a Predisposing Factor for Patellofemoral Pain Syndrome?. JOIO 57, 1139–1146 (2023). https://doi.org/10.1007/s43465-023-00902-w

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