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Suture Anchor Fixation in Osteoporotic Bone: A Biomechanical Study in an Ovine Model     
Yazarlar
Dr. Öğr. Üyesi Levent HOROZ Dr. Öğr. Üyesi Levent HOROZ
Kırşehir Ahi Evran Üniversitesi, Türkiye
Onur Hapa
Dokuz Eylül Üniversitesi, Türkiye
Frank Alan Barber
Buğra Hüsemoğlu
Mustafa Özkan
Hasan Havıtçıoğlu
Türkiye
Özet
Purpose: To evaluate the load to failure strength of anchor techniques suitable for osteoporotic bone. Methods: Using an osteoporotic ovine model in 72 humeri, 6 fixation techniques were tested. Group 1: two interlocking 5-mm anchors with fewer, wider threads; group 2: one 5-mm anchor; group 3: one 5-mm anchor reinforced laterally by a 6.5-mm cancellous screw; group 4: one 5-mm anchor in an area reinforced with a cancellous plug; group 5: two interlocking 5-mm anchors with smaller threads; group 6: one 5-mm smaller threaded anchor. After a 10-N preload, the specimens were cyclically loaded between 10 N and 30 N for 50 cycles and then destructively tested. Peak-to-peak displacement, cyclic elongation, ultimate load, stiffness, and failure mode were recorded. Results: Group 1 had lower peak-to-peak displacement than group 3 (P =.001), group 5 (P =.001), and group 6 (P =.033). In addition, group 1 showed lower cyclic elongation than group 3 (P =.001), group 5 (P =.035), and group 6 (P =.001). Group 1 had a higher ultimate load than group 2 (P =.002), group 3 (P =.019), and group 6 (P =.006). Group 1 also showed higher stiffness than group 2 (P =.007) and group 3 (P =.022). Mode of failure was predominantly caused by anchor pullout for all of the groups except group 3, which mainly failed by suture rupture. Conclusions: Two interlocking suture anchors are stronger than a single anchor in osteoporotic bone. The anchor with fewer, wider threads and a smaller core diameter showed greater strength and less elongation than the other constructs. Reinforcement by cancellous autografting increased suture anchor strength.
Anahtar Kelimeler
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY
Dergi ISSN 0749-8063
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 01-2017
Cilt No 33
Sayı 1
Sayfalar 68 / 74
Doi Numarası 10.1016/j.arthro.2016.05.040
Makale Linki http://dx.doi.org/10.1016/j.arthro.2016.05.040