: Causes and Treatments Introduction A bunionette is also commonly termed a tailor’s bunion and is typically defined as a lateral prominence of the fifth metatarsal head.
: Causes and Treatments A bunionette is also commonly termed a tailor’s bunion and is typically defined as a lateral prominence of the fifth metatarsal head. There are multiple theories as to the etiology of a bunionette. One risk factor for developing a bunionette is pes planus, as it leads to a hindfoot valgus and a compensatory rotation of the fifth metatarsal head laterally.
Other risk factors for developing a bunionette are a plantarflexed fifth metatarsal shaft, lateral bending of the fifth metatarsal shaft, and a prominent metatarsal head. There are other anatomical risk factors for developing a symptomatic bunionette, including a prominent lateral fifth metatarsal head and a “dumbbell” shape fifth metatarsal. Bunionette deformities are seen more commonly in females.
Diagnosis Patients typically complain about lateral sided foot pain with constrictive shoeware. Examination should start with the patient standing to evaluate for pes planus or a hindfoot valgus. A concomitant hindfoot valgus with a bunionette is referred to as a “splay foot”.
Clinical examination typically reveals a callus overlying the fifth metatarsal head on either the lateral, dorsolateral, or plantar surface (5,8). There may also be lateral eminence swelling. Hyperkeratotic lesions can also be seen due to continuous pressure over the lateral portion of the metatarsal.
Lateral eminence swelling Standard radiographs should be obtained with lateral, AP, and oblique views taken (7,8). Typical angles measured are the metatarsophalangeal angle 5 (MTPA) and the 4-5 intermetatarsal angle (4-5 IM angle). Demonstration of the metatarso-phalangeal-5 angle and 4-5 intermetatarsal angle Classification is determined based on the radiographs.
If you are experiencing symptoms that may be related to a bunionettes, it is important to see a sports medicine physician. Early evaluation and treatment typically lead to better outcomes. Do not ignore pain or symptoms that are limiting your activity.
*This article is for educational purposes only and does not substitute for professional medical advice. Always consult a qualified healthcare provider.*
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