Magnetic resonance imaging in the assessment of hallux valgus deformity: changes in the structure and position of the metatarsophalangeal joints

doi:10.3969/j.issn.2095-4344.1296

Abstract

Abstract:

BACKGROUND: At present, the diagnosis of hallux valgus mainly depends on clinical examination and weight-bearing and non-weight-bearing X-ray films of the foot to evaluate the structural changes of the first metatarsal bone and phalanges and the first and second metatarsal bones. There are limitations in the changes of the internal bone, metatarsophalangeal joint capsule and surrounding soft tissues. Magnetic resonance imaging can not only show structural changes, but also display other concurrent changes.

OBJECTIVE: To study the value of magnetic resonance imaging in the diagnosis of hallux valgus.

METHODS: Totally 187 patients, who underwent foot magnetic resonance imaging, were enrolled in this study. The hallux valgus angle and the first and second metatarsal angles were measured by foot X-ray. Thus, 57 patients with hallux valgus (60 feet) were diagnosed as hallux valgus deformity. The changes of toe position and structure, bone, articular capsule and soft tissue, and magnetic resonance imaging performance were analyzed. All patients signed informed consent. The study was approved by the Hospital Ethics Committee.

RESULTS AND CONCLUSION: (1) There was no statistical difference between hallux valgus magnetic resonance imaging and weight-bearing and non-weight-bearing anteroposterior X-ray hallux valgus measurements (P > 0.05). The intermetatarsal angle measurements of magnetic resonance imaging were smaller than those of weight-bearing anteroposterior X-ray films (P < 0.05). (2) Magnetic resonance imaging showed that hallux valgus deformity not only had changes in the structure and position of the first metatarsophalangeal joint, but also had different degrees of pathological changes in bone, joint capsule and adjacent soft tissues. (3) 40% (24/60) patients had subarticular bone marrow edema and cystic degeneration of the first metatarsal or phalangeal bone; 28% (17/60) patients had pollicidal bursitis; 30% (18/60) patients had hydrocele of the first metatarsophalangeal joint; and 12 feet had two or three kinds of bone and soft tissue changes simultaneously. (4) Our results indicated that magnetic resonance imaging can reveal change of structure and position of metatarsophalangeal joint in hallux valgus deformity, evaluate the pathological changes and degree of hallux valgus bone, articular capsule and soft tissue, and comprehensively assess the severity of hallux valgus.

Key words: foot, hallux valgus, deformity, magnetic resonance imaging, X-ray, hallux valgus angle, the first and second metatarsal angle, articular capsule

CLC Number:

R459.9

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R459.9

Guo Juan, Qian Lixia, Wang Xiaodong.

Magnetic resonance imaging in the assessment of hallux valgus deformity: changes in the structure and position of the metatarsophalangeal joints

[J]. Chinese Journal of Tissue Engineering Research, 2019, 23(24): 3857-3861.

Figures/Tables 3

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