Evaluation of soft tissue contribution for hip stability

2015 Fiscal Year Final Research Report

• Project/Area Number: 24592251
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Orthopaedic surgery
• Research Institution: Asahikawa Medical College
• Principal Investigator: Ito Hiroshi 旭川医科大学, 医学部, 教授 (80261296)
• Co-Investigator(Kenkyū-buntansha): MATSUNO Takeo 旭川医科大学, 医学部, その他 (10165847) ; TANINO Hiromasa 旭川医科大学, 医学部, 助教 (70422045)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 輪帯 / バイオメカニクス / 関節唇 / 関節安定性

Outline of Final Research Achievements

Mechanical stress is a main factor for osteoarthritis.Then to keep the joint　stability is very important.To evaluate the bony factor has been almost　established, but soft tissue contribution is unclear.In this study we tried to　evaluate the soft tissue contribution in various posture using MTS machine.
We used seven fresh frozen hips from four donors.We retrieved hemi pelvis and　femur with iliofemoral ligaments and joint capsule intact. We put it to the　angular changeable fixator and femur was fixed to the mount to MTS machine.　We　measured the traction force needed to joint separation.
Dislocation happened after capsule,which included zona orbicularis, resection in all postures. Zona orbicularis seemed to stabalize hip joint. On the other hand, there was no difference in the traction force regardless labral　condition.Therefore, we can say labrum may not work without joint fluid and　capsule, or it doesn’t work as stabilizer against distraction force.

Free Research Field

股関節