Browsing by Author "Ekamol Thumroj"

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    Biomechanical Evaluation of Disposable Digital External Fixators (DDEFs):A Comparative Study with New Design.
    (Faculty of Medicine, Khon Kaen University, 2010-03-27) Ekamol Thumroj; Surut Jianmongkol; Weerachai Kowsuwon
    Background : There are many conditions of phalangeal fractures require digital external fixators  both  commercial  and disposable. The biomechanical comparative studies of these fixators have not been reported especially for disposable digital external fixators(DDEFs). The new design,  adjustable length digital external fixator (ALDiEs) was innovated Purpose : To compare the biomechanical properties of various DDEFs.Materials and Methods : Synbone ; Swiss made, Model 4060 900285 were used to be the phalangeal model for the biomechanical testing. Three types of DDEs and their applications were tested. Ten samples of each type were fixed into phalangeal models. Biomechanical analyses were performed by material testing machine, Loyed Instrument interfaced with Windap data analysis software. The structural stiffness (SS), Yield stress (YS) and ultimate stress (US) both in compression and distraction forces were recorded. Statistical analysis was performed using ANOVA and a post hoc LSD .Study  design  :  Experimental  studySetting  :  Orthopedics  department,  Faculty  of Medicine,  Khon  Kaen  UniversityResults : The SS of one frame Poorman DDEFs, Godwin DDEFs and ALDiEs were 14.54, 14.83 and 12.43 N/mm. in orderly. The Godwin DDEFs had the highest SS (P
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    Palmaris longus \& Plantaris Tendon : Anatomical Variations \& Relationship
    (Faculty of Medicine, Khon Kaen University, 2010-03-27) Surut Jianmongkol; Ekamol Thumroj; Weerachai Kosuwon; Kimaporn Kamanarong
    Background : Tendon  grafting  is  the  procedure,  which  often  performed  in  the  hand  reconstruction.  There  are  many  tendons  have been  used  in  this  procedure  for  instance  palmaris  longus,  plantaris  and  toe  extensor  tendons.  Unfortunately,  there  are  many  variations  in  the  presence  or  absence  of  these  tendons.  Moreover,  the  length  and  diameter  of  these  tendons  are  also  varied  from  many  reports.  To  determine  the  length  of  the  tendon,  therefore,  the  length  of  its  corresponding  bone  could  be  used.Purpose : To  identify  the  variations  of  presentation  of  palmaris  longus  and  plantaris  tendons  in  the  cadavers,  and  to  determine  the  relationship  between  these  two  tendons  with  the  length  of  ulnar  and  tibial  bones.Materials  and  Methods : Thirty  cadavers  from  the  Department  of  Anatomy  were  dissected.  Palmaris  longus  and  plantaris  tendons  were  identified  and  measured  their  lengths  and  diameters.  The  length  of  ulna  and  tibia  were  also  measured.  The data  were  recorded  and  analyzed  by  using  Microsoft  Excel  version  program.Study  design : descriptive  studySetting :  Department  of  Anatomy,  Faculty  of  Medicine,  KhonKaen  UniversityResults  :  Eighty  percent  of  the  cases  had  palmaris  longus  in  one  side.  Ninety – three  percent  of  the  cases  had  plantaris  tendons  and  6.6 % had  plantaris  tendon   in  only  one  side.  Of  those  cases  with  absent  palmaris  longus  tendon,  the  plantaris  tendon  stills  present.  The  mean  lengths  of  palmaris  longus  were  14.59+ 2.08 cm. and 14.24 + 2.53 cm. on  the  left  and  right  sides  respectively.  The  mean  lengths  of  plantaris  tendon  were  33.46 +  3.09 and 31.41 +  3.01 on  the  left  and  right  sides  respectively.  There  was  only  one  case  in whom  the  plantaris  tendon  width  was  smaller  than  2  nn.. There  was  no  correlation  between  the  lengths  of  the  tendons  and  the  corresponding  bones.Conclusions :  The  palmaris  longus  tendons  seem to  be  more  absent  than  the  plantaris  tendon.  The  length  of  the  ulna  could  not  be  del\termined  the  length  of  the  palmaris  longus  tendon  and also  the  length  of  the  tibia  could  not  be  determined  the  length  of  the  plantaris  tendons.
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    Replantation of Digits
    (Faculty of Medicine, Khon Kaen University, 2010-03-06) Ekamol Thumroj; Surut Jianmongkol; Weerachai Kosuwan
    No abstract in English