Yogi Prabowo
Department of Orthopaedic and Traumatology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta, Indonesia

Published : 5 Documents
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Epiphyseal Preservation Surgery in Distal Femur Osteosarcoma Kamal, Achmad Fauzi; Prabowo, Yogi; Hutagalung, Errol U; Budiatmoko, Bambang; Gumay, Saukani; Muthalib, Abdul
Journal of the Indonesian Medical Association Vol. 59 No. 3 March 2009
Publisher : Journal of the Indonesian Medical Association

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Abstract

Conventional osteosarcoma is a primary intramedullar high grade malignant tumour in which the neoplastic cells produce osteoid Early diagnostic and accurate preoperative assessment of the extent of the tumor is crucial when a limb salvage procedure is being considered. More recent studies described the accuracy of magnetic resonance imaging for evaluation epiphyseal extension of osteosarcoma. With development of modern chemotherapy regimens, limb salvage procedure was developed. Most of surgical technique presently used to treat high grade metaphyseal osteosarcoma include resection of one or both epiphysis. If an osteoarticular allograft is used to reconstruct the joint, the epiphysis of the affected bone is lost, potentially creating anatomical mismatching or joint instability. Preservation of the epiphysis technique was potentially to maintain a nearly normal joint for several decades. The aim of this case is to report a case of a female, 12 years old, with osteosarcoma of distal femur to whom a Limb Salvage Surgery with Epiphseal Preservation technique was performed. After two years of follow up, no evidence of any metastasis was detected but the graft was fracture due to excessive load. Preservation of the epiphysis in distal femur osteosarcoma is an alternative surgery for tumor that does not extend to epiphysis. Extracorporeally irradiated autograft is a methode that can be used for reconstruction of distal femur osteosarcoma.Keywords: osteosarcoma, epiphyseal preservation, extracorporeally irradiated autograft
Primary malignant giant cell tumor of the patella: report of a rare case Kamal, Achmad F.; Hutagalung, Errol U.; Gumay, Saukani; Prabowo, Yogi; Yanuarso, Yanuarso
Medical Journal of Indonesia Vol 22, No 4 (2013): November
Publisher : Faculty of Medicine Universitas Indonesia

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Abstract

Primary malignant giant cell tumor (GCT) at the patella bone is a very rare case. It is a high-grade sarcoma characterized by a lesion in which there are areas of synchronous high-grade sarcomatous next to areas of benign GCT. A limb sparing approach is applicable to virtually any bone lesion, whether low grade or high grade. We report a case with primary malignant GCT at the patella, from diagnostic to detailed limb sparing surgery procedure. Fifteen months after surgery, the patient had a good functional outcome without local recurrence and distant metastasis. (Med J Indones. 2013;22:238-42. doi: 10.13181/mji.v22i4.607)Keywords: Limb sparing surgery, primary malignant GCT, total patellectomy
Challenging intraoperative management of pelvic resection type I,II on 33 years old woman with pelvic osteosarcoma Enneking 2B: Sitompul, Doli Mauliate; Prabowo, Yogi
Jurnal Kedokteran dan Kesehatan : Publikasi Ilmiah Fakultas Kedokteran Universitas Sriwijaya Vol 4, No 3 (2017): Oktober 2017
Publisher : Fakultas Kedokteran Universitas Sriwijaya

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Abstract

Pelvic osteosarcomas are considerably rare compare to other lession of osteosarcoma. The anatomic proximity of the pelvis to many neurovascular structures and the urinary and intestinal tracts become a challenge of surgical procedure during excision and reconstruction. Resectability of the tumor determined through the size, extend of the lession through the pelvic and involvement of visceral organ or local infiltration. The prognosis had also became dismal due to the danger of the surgical procedure and unsatisfying outcome postoperatively. In this report, we had follow a 33 years old woman with pelvic osteosarcoma after massive resection type I, II. Six month follow up show promising outcome though massive bleeding caused by the massive excision and reconstruction of the pelvis. This case presented is a operative procedure on pelvic osteosarcoma Enneking 2B with two step operation for resection and reconstruction, these procedure fight against massive bleeding (11 liters on the first stage), challenging anatomic reconstruction of pelvic structure to restore the function and prolonged time of operation. Non vascularized fibular graft obtained and fixated bridging the promontorium to acetabulum to restore the weightbearing axis, followed with arthrodesis of the right hip using reconplate size 3.5 mm, 14 hole. The procedure performed for the case consist of 2 stage operation. First stage, the resection consist of resection of right iliac wing and right periacetabulum region. During the procedure, the availability of packed red cell considerably important, due to massive bleeding exceeded to 11 liters. During the second stage, the reconstruction took more attention about the inflammed soft tissue.  Outcome evaluation presented postoperatively, 1 month and 6 month, show better result MSTS score on evaluation during postoperative to 6 month evaluation. Radiologic evaluation also show the conveniance fixation without any sign of reccurence.  As studies have shown that limb-salvage techniques and the amputation show no difference in terms of the survival rate of patients with malignant bone tumors, the limb-salvage techniques are now being frequently used even for cases of advanced tumors. Therefore, when an extensive operation is necessary, careful preoperative planning followed with adequate intraoperative management according to the tumor location would be helpful in reducing the danger with satisfying result.
Simple Bone Cyst Management: Percutaneous Steroid Injection Versus Curettage With Hydroxiapatite KAMAL, ACHMAD FAUZI; APRIZAL, RIZA; PRABOWO, YOGI
Indonesian Journal of Cancer Vol 11, No 2 (2017): April - June
Publisher : Indonesian Journal of Cancer

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Abstract

ABSTRACT The main goals of the therapy of simple bone cyst (SBC) are to get the bone healing, prevent pathological fractures, and management of pain symptom. There are various methods of the SBC treatments, however they still remain controversial because of their healing rate and invasiveness of surgery. A total of 10 SBC patients were divided into two groups namely curretage with hydroxyapatite (HA) and decompression and percutaneous steroid injection (PSI). PSI was performed three times at intervals of each month. The mean followup of 12-26 months. Evaluation of functional outcome by Musculoskeletal Tumour Society (MSTS) score and supported with radiologically based on Chang criteria. There were 5 patients (proximal femur 2; proximal humerus 2, radius 1) performed curretage with HA therapy. Remaining 5 patients (proximal femur 3; proximal humerus 1; calcaneus 1) were performed PSI therapy. PSI group had better MSTS score, particulary at month 3 (55%) and month 6 (84%) than curettage with HA therapy (47% and 69.3%). Complete bone healing was found in both group at month 12 follow up, however solid union occurred faster in PSI group. PSI tends to have faster and better functional outcome than curettage and HA. Curettage with HA and PSI have similar complete bone healing at month 12 follow up. ABSTRAKTarget utama penalaksanaan simple bone cyst (SBC) adalah mencapat penyembuhan tulang yang sempurna, mencegah fraktur patologis dan mengatasi gejala nyeri. Ada beberapa metode penatalaksanaan SBC, namun demikian masih menjadi perdebatan dikarenakan perbedaan angka penyembuhannya dan jenis pembedahan yang invsif. Sepuluh pasien yang didiagnosis SBC dikelompokkan menjadi kelompok yang mendapat tindakan curretage dan pengisian defek dengan hydroxyapatite (HA) dan kelompok dekompresi dan percutaneous steroid injection (PSI). Prosedur PSIdilakukan sebanyak 3x dengan interval waktu satu bulan. Follow up dilakukan selama 12 – 26 bulan. Evaluasi luaran fungsional menggunakan Musculoskeletal Tumour Society (MSTS) score dan secara radiologi sesuai criteria Chang. Terdapat 5 pasien (2 femur proksimal, 2 humerus proksimal, dan 1 radius) yang dilakukan prosedur curretage dan pengisian defek dengan HA. Lima pasien sisanya ( 3 fenur proximal, 1 humerus proximal dan 1 calcaneus) dilakukan prosedur PSI. Luaran fungsional Kelompok PSI memiliki MSTS score yang lebih baik, khususnya pada bulan ke- 3 (55%) dan bulan ke-6 (84%) daripada kelompok curettage dengan HA (47% dan 69.3%). Penyembulan tulang sempurna menunjukkan hasil yang sama pada evaluasi bulan ke-12, tetapi solid union didapatkan lebih cepat pada kelompok PSI. Kelompok PSI memiliki kecenderungan solid union dan luaran fungsional yang lebih cepat daripada kelompok curettage dengan HA. Kedua kelompok mencapai penyembuhan sempurna pada bulan ke-12 follow up
IMPLEMENTASI CONTEXTUAL TEACHING AND LEARNING (CTL) TERINTEGRASI KARAKTER DALAM PEMBELAJARAN FISIKA UNTUK MENINGKATKAN HASIL BELAJAR SISWA Prabowo, Yogi; Susanto, Hadi; Hindarto, Nathan
UPEJ Unnes Physics Education Journal Vol 6 No 1 (2017)
Publisher : UPEJ Unnes Physics Education Journal

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Abstract

Pembelajaran fisika di sekolah di kota Semarang, dijumpai belum melibatkan secara aktif siswa (student centered) dan kurang mengkaitkan dengan apa yang ada di dalam kehidupan sehari-hari. Sebagai solusi atas permasalah tersebut, melalui penelitian ini, diimplementasikan sebuah pembelajaran Contextual Teaching and Learning (CTL) yang diintegrasikan dengan pendidikan karakter pada pembelajaran fisika di sekolah. Penelitian ini menggunakan metode pre-experimental satu kelas eksperimen sebagai objek yang diberi perlakuan (treatment), dengan mengadopsi desain penelitian one group pretest-posttest. Hasil penelititan ini diperoleh nilai rata-rata posttest kelas eksperimen untuk aspek kognitif sebesar 49,17 dan aspek psikomotorik sebesar 61,78. Selain itu, diperoleh pula data-data perkembangan karakter siswa yang diperoleh melalui observasi dan pemberian angket. Kesimpulan pada penelitian ini yang pertama adalah implementasi Contextual Teaching and Learning (CTL) terintegrasi karakter dalam pembelajaran fisika, berpengaruh secara signifikan terhadap peningkatan hasil belajar siswa. Kedua, implementasi Contextual Teaching and Learning (CTL) terintegrasi karakter dalam pembelajaran fisika terhadap ketercapaian hasil belajar siswa, belum mampu mencapai nilai rata-rata KKM minimal sebesar 75,00. Ketiga, implementasi pembelajaran CTL terintegrasi karakter pada pembelajaran fisika dapat mengembangkan karakter siswa.