Strains in the Metatarsals During the Stance Phase of Gait: Implications for Stress Fractures* by SETH W. DONAHUE, and NEIL A. SHARKEY J Bone Joint Surg.

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Presentation transcript:

Strains in the Metatarsals During the Stance Phase of Gait: Implications for Stress Fractures* by SETH W. DONAHUE, and NEIL A. SHARKEY J Bone Joint Surg Am Volume 81(9): September 1, 1999 ©1999 by The Journal of Bone and Joint Surgery, Inc.

Fig. 1 Photographs and illustrations of the dynamic gait simulator that was used to produce lifelike loading of fresh cadaveric limbs. SETH W. DONAHUE, and NEIL A. SHARKEY J Bone Joint Surg Am 1999;81: ©1999 by The Journal of Bone and Joint Surgery, Inc.

Fig. 2 Axial strain in the second metatarsal during the stance phase of the gait cycle with normal walking. * = peak strain. SETH W. DONAHUE, and NEIL A. SHARKEY J Bone Joint Surg Am 1999;81: ©1999 by The Journal of Bone and Joint Surgery, Inc.

Fig. 3 Axial strain in the fifth metatarsal during the stance phase of the gait cycle with normal walking. * = peak strain. SETH W. DONAHUE, and NEIL A. SHARKEY J Bone Joint Surg Am 1999;81: ©1999 by The Journal of Bone and Joint Surgery, Inc.

Fig. 4 Graph of the mean peak strain (and one standard deviation) in the second metatarsal for the fifteen specimens under each of the five conditions.* = significantly different from normal (p < 0.05). SETH W. DONAHUE, and NEIL A. SHARKEY J Bone Joint Surg Am 1999;81: ©1999 by The Journal of Bone and Joint Surgery, Inc.

Fig. 5 Graph of the mean peak strain (and one standard deviation) in the fifth metatarsal for the fifteen specimens under each of the five conditions. * = significantly different from normal (p < 0.05). SETH W. DONAHUE, and NEIL A. SHARKEY J Bone Joint Surg Am 1999;81: ©1999 by The Journal of Bone and Joint Surgery, Inc.

Fig. 6 Graph of the mean average strain (and one standard deviation) in the second metatarsal for the fifteen specimens under each of the five conditions. * = significantly different from normal (p < 0.05). SETH W. DONAHUE, and NEIL A. SHARKEY J Bone Joint Surg Am 1999;81: ©1999 by The Journal of Bone and Joint Surgery, Inc.

Fig. 7 Graph of the mean average strain (and one standard deviation) in the fifth metatarsal for the fifteen specimens under each of the five conditions. * = significantly different from normal (p < 0.05). SETH W. DONAHUE, and NEIL A. SHARKEY J Bone Joint Surg Am 1999;81: ©1999 by The Journal of Bone and Joint Surgery, Inc.