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Background: Cavus foot is a deformity represented by an increased and rigid medial longitudinal arch, and it is often associated with persistent pain and gait disturbances. None of the conservative conventional treatments for cavus foot have shown conclusive evidence of effectiveness, and so further is research needed to understand how to manage this condition better. This study aimed to assess the immediate and short-term radiological changes after combining static stretching and transcutaneous electrical stimulation of the plantar fascia in adults with idiopathic cavus foot. Methods: A randomized, single-blinded clinical trial was conducted. Sixty-eight participants with idiopathic cavus foot, as determined by an internal Moreau–Costa–Bertani angle (MCBA) less than 125° in a lateral weight-bearing foot radiograph, were equally distributed into a neuromuscular stretching group (NSG) or a control group (no intervention). The NSG underwent a single session, combining transcutaneous electrical nerve stimulation with static stretching of the plantar fascia. Primary measurements of 3 angles were taken using a lateral weight-bearing foot radiograph: the internal MCBA; the calcaneal pitch angle (CPA); and the first metatarsal declination angle (FMDA). Outcomes were collected at baseline, immediately postintervention, and 1 week after intervention. Results: Analysis of variance revealed a significant group effect for all angles (all, P < .05). NSG participants showed a significant increase in the internal MCBA (P = .03), and a significant decrease in the CPA (P = .01) and FMDA (P = .04) from baseline to immediately postintervention. These changes remained statistically significant 1 week after the intervention (all, P < .05). Conclusion: The combination of static stretching and transcutaneous electrical stimulation of the plantar fascia, compared with no treatment, achieved immediate and short-term changes in the internal MCBA, the CPA, and the FMDA, which resulted in flattening the medial longitudinal plantar arch in adults with idiopathic cavus foot.
Background: Cavus foot is a deformity represented by an increased and rigid medial longitudinal arch, and it is often associated with persistent pain and gait disturbances. None of the conservative conventional treatments for cavus foot have shown conclusive evidence of effectiveness, and so further is research needed to understand how to manage this condition better. This study aimed to assess the immediate and short-term radiological changes after combining static stretching and transcutaneous electrical stimulation of the plantar fascia in adults with idiopathic cavus foot. Methods: A randomized, single-blinded clinical trial was conducted. Sixty-eight participants with idiopathic cavus foot, as determined by an internal Moreau–Costa–Bertani angle (MCBA) less than 125° in a lateral weight-bearing foot radiograph, were equally distributed into a neuromuscular stretching group (NSG) or a control group (no intervention). The NSG underwent a single session, combining transcutaneous electrical nerve stimulation with static stretching of the plantar fascia. Primary measurements of 3 angles were taken using a lateral weight-bearing foot radiograph: the internal MCBA; the calcaneal pitch angle (CPA); and the first metatarsal declination angle (FMDA). Outcomes were collected at baseline, immediately postintervention, and 1 week after intervention. Results: Analysis of variance revealed a significant group effect for all angles (all, P < .05). NSG participants showed a significant increase in the internal MCBA (P = .03), and a significant decrease in the CPA (P = .01) and FMDA (P = .04) from baseline to immediately postintervention. These changes remained statistically significant 1 week after the intervention (all, P < .05). Conclusion: The combination of static stretching and transcutaneous electrical stimulation of the plantar fascia, compared with no treatment, achieved immediate and short-term changes in the internal MCBA, the CPA, and the FMDA, which resulted in flattening the medial longitudinal plantar arch in adults with idiopathic cavus foot.
Objective: Cavus foot is a deformity defined by the abnormal elevation of the medial arch of the foot and is a common but challenging occurrence for foot and ankle surgeons. In this review, we mainly aim to provide a comprehensive evaluation of the treatment options available for cavus foot correction based on the current research and our experience and to highlight new technologies and future research directions. Methods: Searches on the PubMed and Scopus databases were conducted using the search terms cavus foot, CMT (Charcot–Marie–Tooth), tendon-transfer, osteotomy, and adult. The studies were screened according to the inclusion and exclusion criteria, and the correction of cavus foot was analyzed based on the current research and our own experience. At the same time, 3D models were used to simulate different surgical methods for cavus foot correction. Results: A total of 575 papers were identified and subsequently evaluated based on the title, abstract, and full text. A total of 84 articles were finally included in the review. The deformities involved in cavus foot are complex. Neuromuscular disorders are the main etiologies of cavus foot. Clinical evaluations including biomechanics, etiology, classification, pathophysiology and physical and radiological examinations should be conducted carefully in order to acquire a full understanding of cavus deformities. Soft-tissue release, tendon-transfer, and bony reconstruction are commonly used to correct cavus foot. Surgical plans need to be customized for different patients and usually involve a combination of multiple surgical procedures. A 3D simulation is helpful in that it allows us to gain a more intuitive understanding of various osteotomy methods. Conclusion: The treatment of cavus foot requires us to make personalized operation plans according to different patients based on the comprehensive evaluation of their deformities. A combination of soft-tissue and bony procedures is required. Bony procedures are indispensable for cavus correction. With the promotion of digital orthopedics around the world, we can use computer technology to design and implement cavus foot operations in the future.
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