Orthopaedic Department, Meir General Hospital, Sapir Medical Center, Tsharnichovski St. 59, Kfar Saba 44281, Israel.
Foot Ankle Int. 2010 Mar;31(3):203-11. doi: 10.3113/FAI.2010.0203.
In the past, several studies provided anecdotal descriptions of high-arched feet in individuals sustaining proximal fifth metatarsal stress fractures. This relationship has never been supported by scientific evidence. Our objective was to examine whether athletes who sustained this injury had an exceptional static foot structure or dynamic loading pattern.
Ten injured professional soccer players who regained full professional activity following a unilateral proximal fifth metatarsal stress fracture and ten control soccer players were examined. Independent variables included static evaluation of foot and arch structure, followed by dynamic plantar foot pressure evaluation. Each variable was compared between injured, contra-lateral uninjured, and control feet.
Static measurements of foot and arch structure did not reveal differences among the groups. However, plantar pressure evaluation revealed relative unloading of the fourth metatarsal in injured and uninjured limbs of injured athletes compared with control, while the fifth metatarsal revealed pressure reduction only in the injured limbs of injured athletes.
Athletes who sustained proximal fifth metatarsal stress fracture were not characterized by an exceptional static foot structure. Dynamically, lateral metatarsal unloading during stance may either play a role in the pathogenesis of the injury, or alternately represent an adaptive process.
Footwear fabrication for previously injured athletes should not categorically address cushioning properties designed for high-arch feet, but rather focus on individual dynamic evaluation of forefoot loading, with less attention applied to static foot and arch characteristics.
过去，有几项研究描述了高足弓在承受第五跖骨近端应力性骨折的个体中的情况。这种关系从未得到科学证据的支持。我们的目的是研究承受这种损伤的运动员是否具有特殊的静态足部结构或动态加载模式。
对 10 名受伤的职业足球运动员进行了检查，这些运动员在单侧第五跖骨近端应力性骨折后恢复了完全的职业活动，另有 10 名对照组足球运动员。独立变量包括对足部和足弓结构的静态评估，然后进行足底压力的动态评估。在受伤、对侧未受伤和对照组的足部之间比较了每个变量。
静态足部和足弓结构的测量值在组间没有差异。然而，足底压力评估显示，与对照组相比，受伤运动员的受伤和未受伤肢体的第四跖骨相对卸载，而第五跖骨仅在受伤运动员的受伤肢体中显示压力降低。
承受第五跖骨近端应力性骨折的运动员的静态足部结构没有特征。在动态方面，站立时的外侧跖骨卸载可能在损伤的发病机制中发挥作用，或者交替代表一种适应过程。
对于以前受伤的运动员，鞋类制造不应一概针对高足弓足的缓冲特性，而应侧重于前足加载的个体动态评估，对静态足部和足弓特征的关注较少。
