Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons
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J. Oral Maxillofac. Surg. · Mar 2003
Micro-lightguide spectrophotometry as an intraoral monitoring method in free vascular soft tissue flaps.
The aim of this prospective study was to measure the hemoglobin oxygen saturation (HbO(2)%) and relative Hb concentration of free vascular soft tissue flaps using micro-lightguide spectrophotometry. The objective was to measure the normal range and topographic differences in HbO(2)% and rel. Hb conc. in tissue transfers before establishing this as a clinical method for monitoring perfusion and vitality. ⋯ As a noninvasive method, micro-lightguide spectrophotometry permits quantitative determination of HbO(2)% and relative Hb concentration over the entire surface of soft tissue flaps. In the case of partially unsuccessful flaps, HbO(2) values of less than 10% to 15% were measured beforehand, thus indicating that these HbO(2) values are not sufficient to support the vitality of the free tissue transfer. When combined with clinical observation, application can be recommended for the vitality measurement of free soft tissue flaps and permits more information to be obtained on topographic capillary perfusion conditions.
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J. Oral Maxillofac. Surg. · Mar 2003
Comparative StudyMedial approach for tibial bone graft: anatomic study and clinical technique.
The purpose of this study is to quantify the amount of bone graft material present in the proximal tibia via a lateral versus a medial approach, as well as describe an alternative technique for obtaining this bone graft material. A quantitative anatomic and statistical analysis and comparison are presented. The goal of this study is to demonstrate the advantages and simplicity associated with utilizing the proximal tibia as a bone graft harvest site in oral and maxillofacial surgery via a medial approach. ⋯ Equal amounts of bone graft material are available for harvest from the medial and lateral aspects of the proximal tibia. Knowledge of important anatomic landmarks can be used preoperatively to allow for safe dissection and harvest of autogenous bone from the proximal tibia. The dissection of medial proximal tibia and harvest of bone graft material may be accomplished efficiently with minimal chances of damage or morbidity to vital adjacent structures.