ARCH STRAIN IN POSTERIOR TIBIAL TENDON DYSFUNCTION

胫骨后肌腱功能障碍引起的足弓拉伤

• 批准号: 6171640
• 负责人: JONATHAN T DELAND
• 金额: $ 16.14万
• 依托单位: HOSPITAL FOR SPECIAL SURGERY
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-08-01 至 2002-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6171640
• 关键词: ankle; foot; human tissue; ligaments; mechanical stress; musculoskeletal disorder; musculoskeletal injury; orthopedics; postmortem; statistics /biometry; tendon injury

DESCRIPTION (Adapted from the Applicant's Abstract): Posterior tibial tendon dysfunction (PTTD) results in a debilitating flatfoot deformity which is increasingly recognized as a major problem in the treatment of foot and ankle disorders. In fact, this disorder is felt to be the number one foot and ankle problem requiring intensive scientific investigation. The deformity is caused, at least in part, by the loss of the tendon function with subsequent muscle imbalance. Bony procedures without major fusions are being used in an effort to treat deformity when possible. However, with a tendon transfer of one third the muscle mass and a similarly smaller tendon, the original problem of muscle imbalance remains. If the problem of muscle imbalance and increased strain could be resolved, patients could be treated early to eliminate those factors that promote deformity and decreased function. This would make for a successful long-term result. A cadaveric model has been developed for the posterior tibial tendon deficient foot. Physiologic tendon, bone and ground reaction loads can be applied and monitored, and the resulting strain in the arch of the foot can be measured. Using this model, the following fundamental questions in the treatment of PTTD will be addressed: 1) does loss of the posterior tibial tendon increase strain in the arch and thereby promote deformity?; 2) how well does the present flexor digitorum tendon transfer replace the posterior tibial tendon muscle unit and does it leave muscle imbalance and increased strain in the arch?; 3) does a bony procedure, like a medial calcaneal displacement osteotomy, adequately assist the flexor digitorum tendon transfer?; and, most importantly, 4) if the flexor digitorum longus tendon transfer is inadequate (as would be expected based on clinical results), are there procedures that can adequately normalize strain and joint position?

描述（改编自申请人摘要）：胫骨后部

项目成果

A closed-loop cadaveric foot and ankle loading model.

闭环尸体脚和脚踝负载模型。

• DOI: 10.1016/s0021-9290(00)00223-2
• 发表时间: 2001
• 期刊: Journal of biomechanics
• 影响因子: 2.4
• 作者: Hansen,ML;Otis,JC;Kenneally,SM;Deland,JT
• 通讯作者: Deland,JT