Deshaies Annie, Roy Patrice, Symeonidis Panagiotis D, LaRue Bernard, Murphy Norman, Anctil Eric
University of Sherbrooke Hospitals, Orthopaedic Service, CHUS-Hôtel Dieu, 580, rue Bowen sud, Sherbrooke, Québec J1G 2E8, Canada.
Foot (Edinb). 2011 Dec;21(4):172-5. doi: 10.1016/j.foot.2011.05.001. Epub 2011 Jun 8.
The second metatarsal head is commonly involved in cases of metatarsalgia. As part of the conservative treatment, metatarsal bars and metatarsal pads are often prescribed.
To compare the effectiveness of metatarsal bars and metatarsal pads in reducing impulse on the second metatarsal head.
Thirty-five healthy subjects were monitored with an insole scanning system during walking in four different conditions: (a) wearing shoes only, (b) shoes plus metatarsal pads and shoes plus metatarsal bars, placed either (c) perpendicular to the foot axis or (d) oblique to the foot axis. The impulse under the second metatarsal head was measured using the first condition as a control. Both feet were examined in each subject resulting in a total of 840 measurements.
Both metatarsal bars and metatarsal pads were effective in reducing impulse when compared with the control (P<0.01). Metatarsal bars were found to be more effective in reducing impulse as compared to the metatarsal pads (P<0.01), and the oblique position of the bars was more effective than the perpendicular one (P<0.01).
The greatest reduction of impulse on the second metatarsal head in healthy subjects is achieved with the use of metatarsal bars in an oblique position.
跖痛症病例中第二跖骨头常受累。作为保守治疗的一部分，常开具跖骨棒和跖骨垫。
比较跖骨棒和跖骨垫在减少第二跖骨头受力冲击方面的效果。
35名健康受试者在四种不同情况下行走时，使用鞋垫扫描系统进行监测：(a)仅穿鞋子；(b)鞋子加跖骨垫以及鞋子加跖骨棒，跖骨棒和跖骨垫放置方式为(c)垂直于足轴或(d)斜向于足轴。以第一种情况作为对照，测量第二跖骨头下方的受力冲击。对每位受试者的双脚进行检查，共计840次测量。
与对照组相比，跖骨棒和跖骨垫在减少受力冲击方面均有效（P<0.01）。发现跖骨棒在减少受力冲击方面比跖骨垫更有效（P<0.01），且跖骨棒斜向放置比垂直放置更有效（P<0.01）。
健康受试者中，使用斜向放置的跖骨棒可最大程度减少第二跖骨头的受力冲击。
