INTRAARTICULAR CONTACT STRESSES WITH SIMULATED ANKLE MALUNIONS

被引：90
作者：
VRAHAS, M
FU, F
VEENIS, B
机构：
[1] Department of Orthopaedic Surgery, Louisiana State University, School of Medicine in New Orleans, New Orleans, LA
[2] Ferguson Laboratory for Orthopaedic Research, Pittsburgh, PA
来源：
JOURNAL OF ORTHOPAEDIC TRAUMA | 1994年 / 8卷 / 02期
关键词：
D O I：
10.1097/00005131-199404000-00014
中图分类号：
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];
学科分类号：
摘要：
Peak contact stresses were evaluated in a human cadaver ankle model of ankle fracture malunion. In one set of experiments, changes in peak contact stresses were evaluated for ankles loaded with lateral displacements of the talus and fibula of 1, 2, 3, and 4 mm. In a second set of experiments, peak contact stresses were evaluated after removal of posterior malleolar fragments. Peak contact stresses were concentrated over the anterior medial talar dome in normal specimens, and in specimens with stimulated malunions. There were relatively low stresses beneath the medial malleolus. Peak stresses for ankles without talar displacements ranged from 1.9 MPa to 12.4 MPa (eliminating one disparate specimen). There was no increase in peak stresses with lateral displacements of the talus or with removal of posterior malleolar fragments. The fact that peak stresses with simulated ankle malunions were not elevated suggests that factors other than the magnitude of normal contact stresses are of greater importance in the pathogenesis of posttraumatic arthritis.
引用
收藏
页码：159 / 166
页数：8
相关论文
共 38 条
  • [1] Ahmed A.M., Burke D.L., In vitro measurements of static pressure distribution in synovial joints. Part I: Tibial surface of the knee, J Biomech Eng, 105, pp. 216-225, (1983)
  • [2] Baratz M.D., Fu F.H., Mengato R., Meniscal tears: The effects of meniscectomy and repair on intra-articular contact area and stress in the human knee, Am J Sports Med, 14, pp. 270-276, (1986)
  • [3] Brown T.D., Erson D.D., Nepola J.V., Singerman R.J., Pederson D.R., Brand R.A., Contact stress aberrations following imprecise reductions of simple tibial plateau fractures, J Orthop Res, 6, pp. 851-862, (1988)
  • [4] Brown T.D., Shaw D., In vitro contact stress distributions on the femoral condyles, J Orthop Res, 2, pp. 190-199, (1984)
  • [5] Brunnel H.N., Charnley A.D., The treatment of displaced fractures at the ankle by rigid internal fixation and early joint movement, J Bone Joint Surg [Br], 47, pp. 634-660, (1965)
  • [6] Caterson B., Lowther D.A., Changes in the metabolism of the proteoglycans from sheep articular cartilage in response to mechanical stress, Biochem Biophys Acta, 540, pp. 412-422, (1978)
  • [7] Day W.H., Swanson S.A.V., Freeman M.A.R., Contact pressures in the loaded human cadaver hip, J Bone Joint Surg [Br], 57, pp. 302-313, (1975)
  • [8] Epstein H.L., Posterior fracture-dislocations of the hip: Long-term follow-up, J Bone Joint Surg [Am], 56, pp. 1103-1227, (1974)
  • [9] Fukubayashi T., Hisashi K., The contact area and pressure distribution pattern of the knee, Acta Orthop Scand, 51, pp. 871-879, (1980)
  • [10] Gloobe H., Nathan H., Osteophyte formation in experimental bipedal rats, J Comp Pathol, 83, pp. 133-141, (1973)
1234