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"Penyembuhan fraktur masih merupakan masalah besar. Banyak hal dilakukanuntuk mempercepat penyembuhan fraktur dan menghindari komplikasipenyembuhan fraktur. Pemberian vitamin C salah satunya. Penelitian ini bertujuanuntuk mengetahui peran vitamin C dalam mempercepat penyembuhan frakturpada fraktur dengan periosteal stripping di femur tikus putih Spague DawleyEvaluasi percepatan penyembuhan fraktur dilakukan secara radiologis denganskor RUST dan histologis dengan histomorphometri. Penelitian ini adalahpenelitian eksperimental. Penilaian dilakukan terhadap 32 ekor tikus dengandosis vitamin C yang berbeda-beda dan dievaluasi pada minggu ke 2 dan mingguke 4. Terdapat percepatan penyembuhan fraktur pada kelompok dengan dosisbesar pada skor RUST di minggu ke-4. Secara histologis pada histomorphometrididapatkan percepatan penyembuhan fraktur,tetapi secara statistik tidak bermakna.

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Fracture Healing still became a problem. There are many things to do to enhance

and avoid the complication of fracture healing. Vitamin C is one of the way to

enhance the fracture healing.. The purpose of this study is to know the role of

vitamin C in enhancement the fracture healing in fracture with periosteal stripping

at white rats femur. The evaluation of enhancement of fracture healing used

radiograpic with RUST score and histologic with histomorphometry. This is an

experimental study. The study used 32 rats which were given vitamin C in

different dosage and was evaluated at the 2nd and 4th week. There is

enhancement of fracture healing in all dosage, especially the large dosage of

vitamin C in RUST score evaluation in the 4th week. In histomorphometry

evaluation there were enhancement of fracture healing but statistically no

significant"

"ABSTRAK Pendahuluan. Kesulitan dalam tatalaksana defek tulang yang luas merupakan salah satu tantangan dewasa ini. Selain tatalaksananya yang kompleks juga dapat memberikan dampak jangka panjang negatif yang berat. Penggunaan BMP-2 dalam tatalaksana fraktur dengan defek tulang yang luas memegang peranan penting. BMP-2 berperan pada proses osteogenesis dan chondrogenesis dan menghambat osteoclastogenesis melalui RANKL signaling. Penelitian ini bertujuan untuk mengetahui efek dari perbedaan dosis BMP-2 terhadap penyembuhan fraktur dengan defek tulang yang luas. Metode. Penelitian dilakukan di Laboratorium Animal Gizi di FKUI dan Laboratorium Patologi Anatomi FKUI-RSCM, pada bulan Juli hingga September 2015. Desain penelitian adalah randomized post test control group. Sejumlah 25 ekor tikus putih Sprague Dawley dengan usia 3-4 bulan dan berat badan antara 250 ? 350 gram, dibagi secara acak menjadi kelompok kontrol hidroksiapatit (HA) saja dan kelompok kombinasi HA + BMP-2 1 μg/ml, HA + BMP-2 5 μg/ml, HA + BMP-2 10 μg/ml, HA + BMP-2 20 µg/ml. Tiap kelompok dilakukan tindakan berupa frakturisasi dengan defek tulang 10mm pada femur kanan dan dilakukan fiksasi interna dengan menggunakan intramedullary k-wire ukuran 1,4 mm secara retrograd. Setelah 6 minggu dilakukan penilaian secara histomorfometri, radiologis dan Scanning Electron Microscope (SEM). Hasil. Berdasarkan hasil penelitian secara histomorfometri ditemukan terdapat perbedaan rerata total area kalus yang bermakna diantara kelompok penelitian (p<0,001),terdapat perbedaan bermakna rerata area penulangan antara kelompok kontrol dengan kelompok 1 μg/ml, 5 μg/ml, 10 μg/ml, 20 μg/ml (masing-masing p=0,009, p=0,016, p=0,009 dan p=0,016), terdapat perbedaan bermakna rerata area kartilago antara kelompok kontrol dengan kelompok 1 μg/ml, 5 μg/ml, 10 μg/ml, 20 μg/ml (masing-masing p=0,009, p=0,009, p=0,009 dan p=0,028), terdapat perbedaan bermakna rerata area fibrosis antara kelompok kontrol dengan kelompok 1 μg/ml dengan kelompok kontrol dan 10 μg/ml(masing-masing p=0,047 dan p=0,009).Secara radiologis dengan RUST score didapatkan perbedaan bermakna antara kelompok kontrol dengan kelompok 1 μg/ml, 5 μg/ml, 10 μg/ml, 20 μg/ml (masing-masing p=0,005, p=0,006, p=0,005 dan p=0,006). Dengan SEM didapatkan gambaran kalus yang lebih homogen dan padat pada kelompok 10μg/ml dibandingkan dengan 5 μg/ml dan 20 μg/ml. Kesimpulan: Pemberian BMP-2 dapat menstimulasi proses penyembuhan fraktur pada defek tulang luas (critical bone defect) yang bermakna secara statistik, histomorfometri, radiologis maupun secara kualitatif dengan SEM. Terdapat dosis optimal dalam pemberian BMP-2.ABSTRACT Introduction: Difficulties in the management of extensive bone defects is one of today's challenges. It is not only complex treatment but also can provide long-term negative severe effects. The use of BMP-2 in the treatment of fractures with extensive bone defect plays an important role. BMP-2 plays a role in the process of osteogenesis and chondrogenesis and inhibits osteoclastogenesis via the RANKL signaling. This study aims to determine the effect of differences in doses of BMP-2 on the healing of the fracture with extensive bone defects. Methods: The study was conducted at the Laboratory of Animal Nutrition at the Faculty of Medicine University of Indonesia (FMUI) in July until September 2015. The study design was randomized posttest control group. A number of 25 Sprague Dawley rats aged 3-4 months and bodyweight between 250-350 grams, were randomly divided into a control group of hydroxyapatite (HA) alone and HA+BMP-2 1 µg / ml, HA+BMP -2 5 ug / ml, HA + BMP-2 10 µg / ml, HA + BMP-2 20 ug / ml. Each group carried out fracturization with 10mm bone defect in right femur and internal fixation by using intramedullary K-wire size of 1.4 mm retrograde. After 6 weeks we did histomorfometri assessment, radiological and Scanning Electron Microscope (SEM). Results: Based on the research results histomorfometrcally found there are differences in the mean total area of ​​callus significantly between the study group (p <0.001), there were significant differences in the mean area of ​​woven bone between the control group with group 1 ug / ml, 5 µg / ml, 10 µg / ml, 20 ug / ml (respectively p = 0.009, p = 0.016, p = 0.009 and p = 0.016), there were significant differences in the average area of ​​the cartilage between the control group with group 1 ug / ml, 5 µg / ml, 10 µg / ml, 20 ug / ml (respectively p = 0.009, p = 0.009, p = 0.009 and p = 0.028), there were significant differences in the average area of ​​fibrosis between the control group with group 1 ug / ml in the control group and 10 mg / ml (respectively -masing p = 0.047 and p = 0.009) .In radiologist assessment with RUST scores obtained significant differences between the control group and group 1 ug / ml, 5 µg / ml, 10 µg / ml, 20 µg / ml (respectively p = 0.005 , p = 0.006, p = 0.005 and p = 0.006). SEM features with callus more homogeneous and dense in the group of 10μg / mL compared with 5 ug / ml and 20 µg / ml. Conclusion: Administration of BMP-2 could stimulate the process of fracture healing in large bone defects (critical bone defect) which was statistically significant with histomorfometri assestment, radiological and qualitatively with the SEM. There is an optimal dose in the administration of BMP-2.;Introduction: Difficulties in the management of extensive bone defects is one of today's challenges. It is not only complex treatment but also can provide long-term negative severe effects. The use of BMP-2 in the treatment of fractures with extensive bone defect plays an important role. BMP-2 plays a role in the process of osteogenesis and chondrogenesis and inhibits osteoclastogenesis via the RANKL signaling. This study aims to determine the effect of differences in doses of BMP-2 on the healing of the fracture with extensive bone defects. Methods: The study was conducted at the Laboratory of Animal Nutrition at the Faculty of Medicine University of Indonesia (FMUI) in July until September 2015. The study design was randomized posttest control group. A number of 25 Sprague Dawley rats aged 3-4 months and bodyweight between 250-350 grams, were randomly divided into a control group of hydroxyapatite (HA) alone and HA+BMP-2 1 µg / ml, HA+BMP -2 5 ug / ml, HA + BMP-2 10 µg / ml, HA + BMP-2 20 ug / ml. Each group carried out fracturization with 10mm bone defect in right femur and internal fixation by using intramedullary K-wire size of 1.4 mm retrograde. After 6 weeks we did histomorfometri assessment, radiological and Scanning Electron Microscope (SEM). Results: Based on the research results histomorfometrcally found there are differences in the mean total area of ​​callus significantly between the study group (p <0.001), there were significant differences in the mean area of ​​woven bone between the control group with group 1 ug / ml, 5 µg / ml, 10 µg / ml, 20 ug / ml (respectively p = 0.009, p = 0.016, p = 0.009 and p = 0.016), there were significant differences in the average area of ​​the cartilage between the control group with group 1 ug / ml, 5 µg / ml, 10 µg / ml, 20 ug / ml (respectively p = 0.009, p = 0.009, p = 0.009 and p = 0.028), there were significant differences in the average area of ​​fibrosis between the control group with group 1 ug / ml in the control group and 10 mg / ml (respectively -masing p = 0.047 and p = 0.009) .In radiologist assessment with RUST scores obtained significant differences between the control group and group 1 ug / ml, 5 µg / ml, 10 µg / ml, 20 µg / ml (respectively p = 0.005 , p = 0.006, p = 0.005 and p = 0.006). SEM features with callus more homogeneous and dense in the group of 10μg / mL compared with 5 ug / ml and 20 µg / ml. Conclusion: Administration of BMP-2 could stimulate the process of fracture healing in large bone defects (critical bone defect) which was statistically significant with histomorfometri assestment, radiological and qualitatively with the SEM. There is an optimal dose in the administration of BMP-2."

"Latar Belakang: Fraktur distal radius merupakan salah satu fraktur yang paling sering terjadi pada berbagai kelompok usia. Terdapat berbagai faktor yang mempengaruhi luaran fraktur distal radius. Studi mengenai epidemiologi dan faktor-faktor yang mempengaruhi luaran fraktur distal radius pada populasi Asia, terutama Indonesia, masih sangat minim. Penelitian ini bertujuan untuk mengetahui faktor yang mempengaruhi luaran klinis dan radiologis fraktur distal radius.Metode: Dilakukan studi potong lintang pada 84 subjek yang mengalami fraktur distal radius dan menjalani tindakan di RSCM pada Januari 2014-Desember 2018. Dilakukan pengumpulan profil usia, jenis kelamin, tingkat pendidikan, mekanisme cedera, keterlibatan sendi, klasifikasi fernandez, jenis fiksasi, presensi fisioterapi. Hasil kemudian dihubungkan dengan luaran radiologis (radial height, radial inclination, ulnar variance, palmar tilt), luaran klinis objektif (ROM), dan subjektif (PRWE).Hasil: Dari 84 subjek (40 laki-laki dan 44 perempuan) didapat median usia 55,5 tahun (rentang 19 - 88 tahun), yang menjalani tindakan cast sebanyak 71 subjek (84,5%) dan plate and screw sebanyak 13 subjek (15,5%). Berdasarkan analisis bivariat, terdapat hubungan antara jenis kelamin dengan luaran radiologis radial height dan ulnar variance, serta mekanisme cedera dengan palmar tilt. Terdapat pula hubungan tingkat pendidikan dan keterlibatan sendi dengan luaran objektif ROM supination, jenis fiksasi dengan ROM extension, dan presensi fisioterapi dengan ROM ulnar deviation. Terdapat korelasi antara luaran radiologis ulnar variance dengan luaran objektif ROM radial deviation, serta antara radial height dengan luaran subjektif skor PRWE. Dilakukan analisis multivariat, didapatkan korelasi antara luaran objektif ROM wrist flexion dan radial deviation dengan luaran subjektif PRWE.Diskusi: Jenis kelamin dan mekanisme cedera mempengaruhi luaran radiologis, sedangkan tingkat pendidikan, keterlibatan sendi, jenis fiksasi dan presensi fisioterapi mempengaruhi luaran objektif berupa ROM. Terdapat korelasi antara luaran radiologis dengan luaran objektif dan subjektif. Terdapat pula kolerasi antara luaran objektif dan luaran subjektif (PRWE).

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Background: Distal radius fracture is one of the most common fracture among various age groups. Several factors affect the functional outcome of distal radius fracture. Studies regarding the epidemiology and factors affecting the outcome of distal radius fracture on Asian population, especially Indonesia, are still very limited. This study aims to find out factors related with clinical and radiological outcome of distal radius fracture.

Methods: A cross sectional study was done on 86 subjects who had distal radius fracture and underwent surgical or non-surgical treatment at RSCM during January 2014-December 2018. Demographic (age, gender, and education) and clinical profiles (mechanism of trauma, joint involvement, fernandez classification, fixation type, presence of physiotherapy) was collected. The results were than compared with the radiological outcome (radial height, radial inclination, ulnar variance, palmar tilt) objective clinical outcome (ROM) and subjective outcome (PRWE).

Results: 84 subjects (40 male and 44 female) with median age 55,5 (range 19-88 years old), underwent cast about 71 subject (84,5%) and plate and screw 13 subject (15,5%). Based on bivariate analysis, there was association between gender and radial height with radiological outcome ulnar variance, also between mechanism of injury with palmar tilt. There was association between level of education and articular involvement with objective outcome (ROM) supination, fixation type with ROM extension and presence of physiotherapy with ROM ulnar deviation. There was a correlation between ulnar variance with ROM radial deviation, and radial height with PRWE. Based on multivariate analysis, there was correlation between ROM wrist flexion and radial deviation with PRWE score.

Discussion: Gender and mechanism of injury affect the radiological outcome of distal radius fracture. Level of education, articular involvement, fixation type and presence of physiotherapy affect the objective clinical outcome (ROM). There was correlation between radiological outcome, ROM and PRWE score."

"Pendahuluan: Penanganan nonunion dan delayed union bukanlah penanganan yang murah dan mudah. Berbagai metode telah dilakukan untuk mengatasi masalah tersebut. Beras angkak terbukti memiliki peranan dalam penyembuhan fraktur. Beras angkak, mengandung monakolin, suatu senyawa dengan aktivitas sebanding lovastatin. Pemberian statin secara lokal dan oral terbukti meningkatkan penyembuhan tulang dengan menginduksi diferensiasi osteoblas melalui peningkatan ekspresi BMP-2. Penelitian ini dilakukan untuk membuktikan efektivitas monakolin pada beras angkak dalam meningkatkan ekspresi BMP-2 dan penyembuhan fraktur pada model delayed union tikus sprague- dawley. Material dan Metode: Studi eksperimental pada 24 hewan coba tikus putih Sprague-Dawley (SD) yang telah mengalami patah tulang femur disertasi dengan gangguan vaskularisasi (model delayed-union). Hewan coba dibagi menjadi empat kelompok (n=6) terdiri dari; kelompok pemberian ekstrak monakolin selama empat minggu (PM4), kelompok pemberian ekstrak monakolin selama dua minggu (PM2), kelompok kontrol empat minggu (KM4) dan kelompok kontrol dua minggu (KM2). Setelah dilakukan sacrifice pada minggu kedua dan keempat, dilakukan penilaian ekspresi BMP-2 secara semikuantitatif dengan pewarnaan imunohistokimia melalui skor imunoreaktif (IRS). Analisis histomorfometri untuk menilai penyembuhan fraktur dengan mengukur persentase area fibrosa, tulang rawan dan tulang imatur. Hasil: Pada evaluasi parameter IRS dan histomorfometri didapatkan ekspresi BMP-2 lebih tinggi (p=0.03), persentase area fibrosa lebih sedikit (p=0.005) dan area tulang rawan lebih besar (p=0.04) pada kelompok PM2 dibandingkan dengan kelompok KM2. Selain itu didapatkan pula secara ekspresi BMP-2 lebih tinggi (p=0.011), presentase area tulang imatur lebih besar (p=0.01), dan presentase area fibrosa lebih kecil (p=0.03) pada kelompok PM4 dibandingkan dengan kelompok KM4. Di sisi lain, didapatkan presentase area fibrosa lebih kecil (p=0.02), area tulang rawan lebih sedikit (p=0.05), dan peningkatan area tulang imatur lebih besar (p=0.04) pada kelompok PM4 dibandingkan dengan kelompok PM2. Ekspresi BMP-2 sama-sama meningkat pada kelompok PM2 dan PM4. Kesimpulan: Pemberian monakolin pada beras angkak pada model delayed-union tikus Sprague Dawley terbukti meningkatkan ekspresi BMP-2 dan meningkatkan penyembuhan fraktur.

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Introduction: Management of nonunion and delayed union could be difficult and expensive. Various methods have been studied to overcome this problem. Red-yeast-rice has a role in fracture healing. Red-yeast-rice contains monacolin, which has similar activity to lovastatin. Local application and oral administration of statins have been shown to improve bone healing by inducing osteoblast differentiation and matrix production via increasing BMP-2 expression. This study was conducted to prove the effectiveness of monacolins inside red-yeast-rice in increasing the expression of BMP-2 and fracture healing. Methods: This experimental animal study was conducted using 24 delayed union models Sprague-Dawley (SD) Rats. There were 4 groups (n=6), consist of; 4-weeks-given-monacolin group (PM4), 2-weeks-given-monacolin group (PM2), 4-weeks-control group (PM2) and 2-weeks control group (KM2). After they were sacrificed in the second and fourth weeks, immunohistochemical staining was conducted to evaluate BMP-2 expression by Immunoreactive Score (IRS). The histomorphometric evaluation was also conducted to evaluate fracture healing by measuring fibrous area, cartilage area, and woven bone area percentage. Results: There was significantly higher BMP-2 expression (p=0.03), less fibrous area (p=0.05), and larger cartilage area (p= 0.04) in the PM2 group compared to the KM2 group. There was significantly higher expression of BMP-2 (p=0.011), larger woven bone area (p=0.01), and less fibrous area (p = 0.03) in the PM4 group compared to the KM4 group. It was also presented, there was a significantly less fibrous area (p=0,02), larger cartilage area (p=0.05), and larger woven bone area (p=0.04) in the PM4 group compared to the PM2 group. The expression of BMP-2 in the PM2 group was as high as the PM4 group. Conclusion: Monacolin in red-yeast-rice effectively increased BMP-2 expression and fracture healing in the delayed union model of SD rats."

"Angka kejadian fraktur yang masih cukup tinggi, diikuti komplikasi berupa nonunion akan menimbulkan berbagai masalah selama proses penyembuhan yang berujung pada tingginya biaya kesehatan. Berbagai tindakan pencegahan perlu diberikan berdasarkan faktor-faktro yang dapat mempengaruhi penyembuhan tulang. Penelitian ini adalah studi eksperimental dengan pemberian soybean pada tikus sparaque dawley dengan patah tulang femur yang terbagi atas kelompok A/kontrol, kelompok B/25 mg, dan kelompok C/50 mg. Evaluasi dilakukan dengan radiologi dan histopatologi. Tidak didapatkan perbedaan yang bermakna pada evaluasi radiologi pada ketiga kelompok. Didapatkan perbedaan yang bermakna pada evaluasi histopatologi pada kelompok C dibandingkan kelompok lainnya"

"Pendahuluan: Fraktur adalah salah satu penyakit yang menjadi permasalahan yang cukup besar dalam bidang kesehatan di dunia, terutama di negara berkembang. Secara umum fraktur dapat sembuh dengan normal. Pada beberapa kondisi, penyembuhan fraktur mengalami komplikasi seperti delayed union atau non union. Penyembuhan fraktur yang sukses merupakan suatu interaksi yang kompleks antara proses angiogenesis dan osteogenesis. Stimulus fisika berupa pajanan PEMF (pulsed electromagnetic fields) menunjukkan pengaruh proses osteogenesis baik dalam tahap perkembangan penulangan embrio dan tahap penyembuhan fraktur.Tujuan: Penelitian ini bertujuan untuk mengetahui penyembuhan fraktur tulang delayed union pada hewan coba pada pemberian ELF-PEMF dengan melihat skor radiologi RUST dan Failure Load dari Pemberian Gaya Aksial.Metode: Dilakukan uji eksperimental pada 56 hewan coba di Laboratorium Hewan Departemen Gizi, Fakultas Kedokteran Universitas Indonesia, dengan membandingkan nilai RUST Score dan Load Score pada kedua kelompok hewan coba.Hasil: Penelitian dilakukan selama Agustus-September 2018. Tidak ada perbedaan karakteristik hewan coba pada penelitian. Didapati bahwa terdapat perbedaan bermakna Rust Score pada kelompok perlakuan dan kelompok kontrol pada setiap minggu pemeriksaan dan terdapat perbedaan bermakna Load Score pada minggu keempat dan kelima.Kesimpulan: Penelitian ini menyimpulkan terdapat perbaikan penyembuhan fraktur delayed union pasca pemberian ELF-PEMF dilihat dari perbedaan nilai Rust score dan load score.

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Background: Fracture is a major health problem in the world, especially in developing countries. Usually, fractures can heal normally. In some conditions, the healing process becomes delayed union or non union. Successful healing of fractures is a complex interaction between angiogenesis and osteogenesis. Physical stimuli such as exposure of PEMF (pulsed electromagnetic fields) influences the osteogenesis process both in the development stage of embryo reinforcement and the fracture healing stage.Objective: The aim is to determine the healing of delayed union fractures in experimental animals after exposure to ELF-PEMF.Methods: The experimental study was conducted at Department of Nutrition Animal Laboratory, Faculty of Medicine, Universitas Indonesia with 56 experimental rats. The study was conducted by comparing the RUST Score and Load Score values ​​in the two experimental animal groupsResult: The study was conducted during August-September 2018 There was no difference in animal characteristics in the study. There was significant difference in Rust Score in both groups in each examination week and there were significant differences in Load Score in the fourth and fifth weeks.Conclusion: There was improvement in delayed union fracture healing after the administration of ELF-PEMF as seen from the difference in Rust score and load score."

"Latar Belakang Hipertensi dan fraktur merupakan masalah kesehatan yang sering terjadi ACE inhibitor telah dilaporkan dapat mempromosikan diferensiasi osteoblas meningkatkan mineralisasi dan sekresi matriks tulang sehinga konsumsinya diharapkan mampu mempercepat penyembuhan Tujuan Penelitian bertujuan mengetahui efek pemberian ACE inhibitor terhadap proses penyembuhan fraktur model delayed union Metode Enam belas femur tikus yang dibuat sesuai model delayed union dibagi secara acak menjadi kelompok kontrol kelompok perlakuan Captopril dosis 4 mg kgBB kelompok perlakuan Captopril dosis 8 mg kgBB dan kelompok Captopril dosis 16 mg kgBB Evaluasi dilakukan pada minggu ke 4 secara radiologis foto polos dan histomorfometri Hasil Pada histomorfometri minggu ke 4 didapatkan peningkatan area penulangan yang bermakna terhadap kontrol p 0 033 terutama pada pemberian Captopril dosis 8 mg kgBB p 0 008 dan dosis 16 mg kgBB p 0 015 Penurunan area fibrosa yang bermakna terhadap kontrol p 0 042 terjadi pada Captopril dosis 4 mg kgBB p 0 020 dan dosis 8 mg kgBB p 0 012 Secara radiologis didapatkan peningkatan skor RUST semua kelompok perlakuan yang bermakna terhadap kontrol p 0 021 Kesimpulan Pemberian Captopril dapat menstimulasi proses penyembuhan fraktur pada model delayed union secara radiologis dan histomorfometri Captopril dosis 8 mg kgBB menunjukkan efek yang paling signifikan dalam proses penyembuhan fraktur."

"Delayed union adalah masalah besar pada penyembuhan fraktur. Bone Morphogenetic Protein (BMP) terbukti dapat mempercepat penyembuhan tulang dari 30 sampai 40 persen. Salah satu obat yang dapat digunakan untuk meningkatkan BMP2 dan BMP4 adalah pentoxyfillin. Pada studi eksperimental ini dilakukan untuk menginvestigasi pengaruh pentoxyfillin oral terhadap percepatan penyembuhan tulang pada fraktur dengan periosteal stripping di femur tikus putih Spague Dawley sejumlah 24 ekor. Evaluasi dilakukan secara radiologis dengan skor RUST dan histologis dengan histomorphometri pada minggu ke 4. Terdapat percepatan penyembuhan fraktur pada skor RSUT maupun pada histomorfometri, namun tidak bermakna secara statistik. Namun didapatkan perbedaan bermakna pada area penulangan dan area tulang rawan pada kelompok dengan dosis obat tertentu. Pentoxyfillin oral berpengaruh pada percepatan penyembuhan fraktur pada delayed union, dengan dosis 100mg/KgBB/hari.

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Delayed union is an important problem during fracture healing process. Bone Morphogenetic Protein (BMP) has shown to accelerate the bone healing from 30 to 40 percent. Pentoxyfilline is a drug used to increase BMP2 and BMP4. This experimental study was conducted to investigate the effect of oral pentoxyfilline accelerating bone healing process on fractured femur with periosteal strapping on 24 Sprague Dawley Rats. The evaluation of RUST score and histologically on histomorphometric analysis was done on the forth week. There was an enhancement of fracture healing in terms of RUST score and histomorphometric analysis, but statistically not significant. However, the significant difference was observed in area of osseous tissue and cartilage area in the dose group. Oral Pentoxyfilline accelerates the fracture healing process in delayed union model, with dosing of 100mg/KgBW/day."

"Latar belakang : Delayed union merupakan salah satu komplikasi penyembuhan fraktur dengan insiden berkisar antara 4,4% hingga 31%. Penatalaksanaan delayed union dapat menimbulkan masalah ekonomi dan kesehatan pada pasien. Angiogenesis memiliki peran penting dalam penyembuhan fraktur. Sildenafil telah terbukti menjadi stimulator poten angiogenesis melalui peningkatan regulasi faktor pro-angiogenik atau yang dikenal sebagai vascular endothelial growth factor (VEGF). Studi ini akan menentukan apakah sildenafil juga mempengaruhi aktivitas angiogenesis dengan ekspresi VEGF dan mempercepat penyembuhan fraktur dengan delayed union.Metode : Penelitian ini merupakan penelitian eksperimental dengan post test only control group design, yang dilakukan pada model delayed union tikus Sprague dawley menggunakan analisis histomorfometri dan imunohistokimia. Penelitian ini diawali dengan studi pendahuluan untuk menentukan model delayed union yang hasilnya akan digunakan sebagai kontrol pada penelitian selanjutnya. Tikus dibagi secara acak menjadi empat kelompok : kelompok delayed union (n=6), kelompok dengan pemberian sildenafil 3,5 mg/kgbb (n=6), sildenafil 5 mg/kgbb (n=6) dan sildenafil 7,5 mg/kgbb (n=6). Parameter yang dievaluasi meliputi luas total kalus, area tulang rawan, area penulangan, jaringan fibrosa dan ekspresi VEGF. Pengukuran dilakukan pada minggu ke-2 dan ke-4 setelah intervensi.Hasil : Setelah dua minggu kondisi delayed union, sildenafil secara signifikan meningkatkan parameter penyembuhan fraktur. Terjadi peningkatan yang signifikan pada total luas kalus (p=0,004), area tulang rawan (p=0,015), area penulangan (p=0,001), jaringan fibrosa (p=0,005) dan ekspresi VEGF (p=0,037). Setelah empat minggu, perbedaan yang signifikan hanya terjadi pada area penulangan (p=0,015) dan jaringan fibrosa (p=0,001).Diskusi : Analisis histomorfometri dan imunohistokimia menunjukkan peningkatan yang signifikan pada parameter penyembuhan fraktur dan ekspresi VEGF. Hal ini menunjukkan terjadinya percepatan penyembuhan fraktur dan peningkatan pembentukan pembuluh darah. Semakin sedikitnya area kalus dan berkurangnya area tulang rawan serta meningkatnya area penulangan menunjukkan percepatan proses penyembuhan fraktur. Sildenafil meningkatkan aktivitas angiogenesis dengan meningkatnya ekspresi VEGF dan perbaikan vaskularisasi. Perbaikan vaskularisasi pada fraktur tidak hanya memperbaiki oksigenasi dan nutrisi jaringan, tetapi juga menyediakan suplai mesenchymal stem cells (MSCs) pada jaringan fraktur.Simpulan : Sildenafil terbukti mempercepat penyembuhan fraktur dan meningkatkan ekspresi VEGF pada fraktur dengan delayed union.

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Introduction : Inspite of various methods of management to achieve optimum fracture healing, delayed union remains a major problem. The incidence of delayed union ranging from 4.4% to 31%. The management of such problem include secondary operative intervention, which results in economic impact and patient morbidity. Angiogenesis plays an important role in fracture healing. Sildenafil has been shown to be a potent stimulator of angiogenesis through upregulation of pro-angiogenic factors or known as vascular endothelial growth factor (VEGF). This study will evaluate whether sildenafil also influences VEGF expression and bone formation during the process of healing in delayed union fracture.

Method : This study was an experimental study with post test only control group design. It was performed ina delayed union femur fracture model of Sprague Dawley rats using histomorphometric and immunohistochemistry evaluation. A pilot study was initiated previously to determine the model for delayed union fracture healing, and the results were used as the control. Rats were randomized into four groups : delayed union (n=6), administration of sildenafil 3.5 mg/kgbw (n=6), sildenafil 5 mg/kgbw (n=6) and sildenafil 7.5 mg/kgbw (n=6). The parameters evaluated include total area of callus, cartilage area, total osseous tissue, fibrous tissue and VEGF expression. The measurement was carried out at 2 and 4 weeks after intervention.

Results : After two weeks of delayed union fracture healing, sildenafil significantly increased the parameter of fracture healing. The results showed a significant increase of total area of callus (p=0.004), cartilage area (p=0.015), total osseous tissue (p=0.001), fibrous tissue (p=0.005) and VEGF expression (p=0.037). After four weeks, the results were still significant in total osseous tissue (p=0.015) and fibrous tissue (p=0.001).

Discussion : Histomorphometric and immunohistochemistry analysis showed a significant increase of fracture healing parameter and higher expression of the proangiogenic factors (VEGF). Such result confirmed the increase of bone and vascular formation. A smaller callus area with a slightly reduced amount of cartilaginous tissue and increased osseous tissue indicated an accelerated healing process. Sildenafil improves the expression of VEGF and vascularization repair. The vascular invasion in a fracture not only provide oxygen and nutrients needed to repair the injured tissue cells, but also provide an additional source of MSCs.

Conclusion : Sildenafil is proven to effectively accelerate fracture healing and increase VEGF expression in delayed union fracture."

"ABSTRAKFractures of the neck of condyle usually are the result of a blow to the mandible. A lateral blow to the body of the mandible commonly cause a contralateral condylar fracture. There are many signs and symptoms of a condylar fracture, for example crepitation, deviation of the mandible to the side of injury, and spasm of the associate group of muscles. These will result in a functional disability, which is usually seen as a limited mandibular movement. This paper reported a patient with a fracture of the right condylar neck. Patient had been treated with closed reduction and immobilization for 2 months. After that, she felt that her bite was charged, she could not occlude her teeth well, and she had clicking sound in the right joint when she opened her mouth. Besides that, patient had difficulties to move the mandible to the left side, and she could not open her mouth widely. The patient was treated with a repositioning splint and she had to do some jaw exercises.The purposes were to regain the position of condyle, to reduce the muscle spasm and finally got the normal jaw movement."