Comparative Holding Strength Between Partially Threaded Tipped and Nonthreaded Tipped Pins for Fracture Fixation in the Canine Femur: Histologic Results
Küçük Resim Yok
Tarih
2002
Yazarlar
Dergi Başlığı
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Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Bu çalışma, kırık oluşturulan ve oluşturulmayan köpek femurlarında ucu yivli ve yivsiz pin uygulamasının spongioz kemikte etkilerini araştırmak amacıyla gerçekleştirildi. İntramedullar pinin kemik dokusuna uygulanıp akabinde uzaklaştırılmasından sonra, kemik dokusunda oluşturduğu etkinin biyolojik faktörlerden ziyade mekaniksel olduğu tespit edildi. Ucu yivli pinlerin kırık femurlarda kırık oluşturulmayan femurlardakinden daha fazla hasar meydana getirdiği bulundu. Dördüncü haftada kırık femurlara uygulanan ucu yivli pinlerin yivleri içerisine aşırı miktarda kemik dokusu üremesi ile birlikte kemik dokusu ölümüne rastlandı. Osteoklastik aktiviteye rağmen yoğun kemik dokusu rezorpsiyonuna rastlanmadı. Kırık oluşturulmayan femurlarda daha az kemik dokusu ve daha fazla kemik iliği oluşumuna rastlandı. Kırık ve kırık oluşturulmayan femurlara uygulanan ucu yivsiz pinlerin ise sınırlı bir osteoklastik aktivite ve fibröz doku oluşumuna sebep olduğu tespit edildi. Sekizinci haftada kırık ve kırık oluşturulmayan femurlara uygulanan ucu yivli pinlerin oluşturduğu kemik dokusunun remodeling aktivitesi ile birlikte uzaklaştırılarak yerini fibröz dokusuna bıraktığı tespit edildi. Kırık kemiklerde aynı zamanda aşırı miktarda doku yivi rezorpsiyonu (kemik dokusu yivlerinin yüksekliğinin azalması) ve kemik dokusu ölümüne rastlandı.
This study was carried out to investigate the effects of partially threaded and nonthreaded tipped intramedullary (IM) pins in the cancellous bone of fractured and intact femurs in dogs. At the time of IM pin insertion, mechanical other than biological factors affect the bone exposed to the IM pins. Fractured femurs had more damage from the partially threaded tipped pins compared to the intact femurs. At 4 weeks, tremendous amount of new bone formation took place, growing into the threads of the pin in the fractured femurs. In spite of osteoclastic activity, there was not evidence of extensive bone resorption. Less amount of new bone formation and greater amount of bone marrow were observed with the tissue threads of intact femur. In the nonthreaded group, fractured and intact femurs had limited osteoclastic activity with fibrous tissue formation.At 8 weeks, with partially threaded tipped pins of fractured and intact femurs, bone was removed and/or remodeled and replaced with fibrous tissue: There was also tremendous amount of tissue thread resorption (reduction in the height of tissue threads) and bone death in the fractured femur. The tissue threads of partially threaded tipped pins of intact femurs at 8 weeks appeared to have the same patterns on the tissue threads of intact femurs at 4 weeks. In the nonthreaded pin group, osteoclastic bone resorption along with replacement with fibrous tissue and bone necrosis were the characteristic pictures at 8 weeks.
This study was carried out to investigate the effects of partially threaded and nonthreaded tipped intramedullary (IM) pins in the cancellous bone of fractured and intact femurs in dogs. At the time of IM pin insertion, mechanical other than biological factors affect the bone exposed to the IM pins. Fractured femurs had more damage from the partially threaded tipped pins compared to the intact femurs. At 4 weeks, tremendous amount of new bone formation took place, growing into the threads of the pin in the fractured femurs. In spite of osteoclastic activity, there was not evidence of extensive bone resorption. Less amount of new bone formation and greater amount of bone marrow were observed with the tissue threads of intact femur. In the nonthreaded group, fractured and intact femurs had limited osteoclastic activity with fibrous tissue formation.At 8 weeks, with partially threaded tipped pins of fractured and intact femurs, bone was removed and/or remodeled and replaced with fibrous tissue: There was also tremendous amount of tissue thread resorption (reduction in the height of tissue threads) and bone death in the fractured femur. The tissue threads of partially threaded tipped pins of intact femurs at 8 weeks appeared to have the same patterns on the tissue threads of intact femurs at 4 weeks. In the nonthreaded pin group, osteoclastic bone resorption along with replacement with fibrous tissue and bone necrosis were the characteristic pictures at 8 weeks.
Açıklama
Anahtar Kelimeler
Veterinerlik
Kaynak
Fırat Üniv. Sağlık Bilimleri Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
16
Sayı
1
Künye
Oğurtan, Z., (2002). Comparative Holding Strength Between Partially Threaded Tipped and Nonthreaded Tipped Pins for Fracture Fixation in the Canine Femur: Histologic Results. Fırat Üniv. Sağlık Bilimleri Dergisi, 16(1), 89-94.
