Chinese Journal Of Clinical Anatomy ›› 2013, Vol. 31 ›› Issue (1): 95-99.

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Experimental study of relationship between plantar fascia and motion range of first metatarsophalangeal joint

CHEN Da-wei, LI Bing, YANG Yun-feng, YU Guang-rong   

  1. Department of Orthopaedics, Tongji Hospitial, Tongji University, Shanghai 200065, China
  • Received:2012-08-07 Published:2013-01-29

Abstract:

  Objective    To reveal the importance that the plantar fascia takes to the stability maintenance of the first metatarsophalangeal joint and to investigate the feasibility of treating Hallux rigidus in its early stage through surgery.  Methods    6 fresh cadaveric foot specimens were used in the experiment. A digital detective device was adopted to measure the motion range of the first metatarsophalangeal joint before and after the severance of the plantar fascia beneath the first metatarsal bone. During the measuring process, the distal end of the hallux was loaded to dorsiflexion with the whole specimen fixed to homemade braces.   Results   The dorsiflexion range of the first metatarsophalangeal joint was (68.34±3.05)°and (78.50±3.77)° before and after the severance of the plantar fascia, respectively. The motion range increased by (10.16±2.10)°after the plantar fascia was severed (t=11.83, P<0.05).    Conclusions    The plantar fascia plays an important role in maintaining the stability of the first metatarsophalangeal joint. The injury of the plantar fascia should be treated in its earliest stage possible. Surgical release of the plantar fascia should be well-planned to minimize the effect on its structural and functional integrity. Partial section of plantar fascia may be used as an effective operative approach to deal with Hallux rigidus in its early stage.

Key words: First metatarsophalangeal joint, Range of motion, Plantar fascia, Biomechanics, Hallux rigidus

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