第5中足骨骨折に関する文献

主に解剖学的知⾒から

要約• 第3腓骨筋腱は第5中足骨折に影響を与え

る• 短腓骨筋腱は第5中足骨の近位外側，足底

腱膜は近位端に付着し，骨折に影響を与える

• 中足骨内転角度が⼤きい程，足部の変形が生じやすく，骨折リスクが高まる

【主題】第5中足骨へ付着する筋の破格

【要約】第3腓骨筋腱は第5中足骨折に影響を与える

次ページに参考文献

Foot Ankle Surg. 2016 Mar;22(1):41-5. The peroneus brevis tendon at its insertion site on fifth

metatarsal bone.

The PT tendon may also have an additional effect to avulsion fracture.

【主題】第5中足骨骨折メカニズム

【要約】短腓骨筋腱は第5中足骨の近位外側，

足底腱膜は近位端に付着し，骨折に影響を与える

次ページに参考文献

Radiology. 2003 Mar;226(3):857-65.Fractures of proximal portion of fifth metatarsal bone: anatomic and imaging evidence of a pathogenesis of

avulsion of the plantar aponeurosis and the short peroneal muscle tendon.

Radiology. 2003 Mar;226(3):857-65.Fractures of proximal portion of fifth metatarsal bone: anatomic and imaging evidence of a pathogenesis of

avulsion of the plantar aponeurosis and the short peroneal muscle tendon.

• The pathogenesis of fractures of the proximal portion of the fifth metatarsal bone appears to be related to avulsion injury of PAL and SPM tendon fibers.

J Foot Ankle Surg. 2015 Jan-Feb;54(1):94-8. The fifth metatarsal base: anatomic evaluation regarding fracture

mechanism and treatment algorithms.

In zone B: 短腓骨筋・付着部12.0±2.2 mm (骨下端から)10.2±2.2 mm (骨近位端から)11.5 ±0.9 mm (骨外側端から)

In zone A: 足底腱膜・付着部6.6±2.2 mm (下端から)9.5±2.9 mm (骨近位端から)11.5±0.9 mm (骨外側端から)

Zone C ⽴⽅骨と第5中足骨の関節面

【主題】第5中足骨骨折と中足骨内転の関係

【要約】中足骨内転角度が⼤きい程，足部の変形が生じやすく，

骨折リスクが高まる

次ページに参考文献

J Foot Ankle Surg. 2016 Jul-Aug;55(4):788-93. Rare Proximal Diaphyseal Stress Fractures of the Fifth Metatarsal Associated With Metatarsus Adductus.

• The association of metatarsus adductus with stress fractures is clear; however, the exact magnitude of stress that a forefoot adduction posture has on the fifth metatarsal is unknown.

• *When the forefoot is adducted, the subtalar joint will compensate with closed kinetic chain supination (dorsiflexion and abduction of the talus and inversion of the calcaneus), which will result in overloading of the lateral column.

[Engel’s Angle] Line (d) bisects the middle cuneiform. Line (e) isthe longitudinal axis of the second metatarsal.

• A larger MAA as a factor in contributing to multiple foot pathology: – hallux abducto valgus– lateral metatarsal fractures– hindfoot deformity

第2中足骨軸と中間楔状骨⼆等分線のなす角度

J Foot Ankle Surg. 2012 Nov-Dec;51(6):739-42.The association of metatarsus adductus to the proximal fifth

metatarsal Jones fracture.