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lood transfusion might be necessary. The role of the tourniquet is controversial, though it iswidely used by orthopedic surgeons. Its use was believed to be effective in decreasingintraoperative blood loss and creating a bloodless surgical field, which theoretically wouldfacilitate the cementing technique and other surgical procedures. However, reactive blood flowreached its peak within five minutes after the tourniquet had been released. The tourniquetcontrols intraoperative blood loss, but cannot stop postoperative blood loss. Patients who weremanaged with a tourniquet during the operation often complained of thigh pain. This waspossibly caused by the direct pressure of an inflated tourniquet on the nerves and local softtissues. Limb swelling and increased soft tissue tension caused by reactive hyperperfusion aftertourniquet deflation may also contribute to the wound pain. The aim of our study is toinvestigate the effect of tourniquet on blood loss and soft tissue damage in TKA.[Materials & Methods] In this prospective, randomized study, 72 patients with primarycemented knee arthroplasty were randomly allocated to two groups (with and withouttourniquet). The operation time, blood loss, post-operative hemoglobin, hematocrit, markers ofsoft tissue damage (myoglobin, Cretine Posphokinase(CK), LDH, GOT, Creatinine), status ofrehabilitation, knee pain and thigh pain were monitored until discharge.[Results] The intra-operative and total blood loss is more in non-tourniquet. The post-operativelevels of hemoglobin and hematocrit were significant higher in tourniquet group untilpostoperative day 4. Using tourniquet also shortened the operation time. Patients managedwithout tourniquet showed higher CK level in postoperative day 2. The severity of knee painwas similar in both group. Mild thigh pain was noted in tourniquet group.[Conclusions] Our randomized controlled trial revealed that the usage od tourniquet in TKAmay save blood and save time with minor adverse effect. Without using tourniquet, theprolonged surgical time and excessive hemostasis may cause more soft tissue damage.Thursday, October 7, 2010, 14:50-15:30Session A6: Hip MiscellaneousSports Ability After Total Hip Replacement for the Hip Dysplasia inJapanese Patients*Naonobu Takahira - Kitasato University School of Allied Health Sciences - Sagamihara, JapanKatsufumi Uchiyama - Kitasato Univ. - Sagamihara-city, JAPANKensuke Fukushima - Kitasato University - Sagamihara, JapanTadashi Kawamura - Kitasato University - Sagamihara, JapanMitsuaki Ashihara - Kitasato University - Sagamihara, JapanMeguru Fujii - Kitasato University - Sagamihara, JapanYukiko Kihara - Kitasato University - Sagamihara, JapanMasumi Yoshimoto - Kitasato University - Sagamihara, JapanJun Kitagawa - Kitasato University - Sagamihara, Japan*Email: takahira@med.kitasato-u.ac.jpThe purpose of this study is to prove whether Japanese patients undergoing primary total hiparthroplasty (THA) for the hip dysplasia were able to return to sport after surgery.file:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]