TY - JOUR AU - Krasnoperov, Sergiy AU - Golovakha, Maksim AU - Shalomeev, Vadim PY - 2017/03/29 Y2 - 2024/03/29 TI - Mechanical properties of cortical fixators for anterior cruciate ligament reconstruction JF - ORTHOPAEDICS TRAUMATOLOGY and PROSTHETICS JA - OTP VL - 0 IS - 1 SE - ORIGINAL ARTICLES DO - 10.15674/0030-59872017139-45 UR - http://otp-journal.com.ua/article/view/96970 SP - 39-45 AB - <p class="MsoNormal" style="text-align: justify; text-indent: 35.45pt; line-height: 150%;"><span style="font-size: 14.0pt; mso-bidi-font-size: 9.0pt; line-height: 150%; color: #221e1f; mso-bidi-font-style: italic;">Reconstruction of the damaged anterior crucial ligament today is a routine surgery. Violation of graft fixation and its exten­sion are the most frequent causes of instability. Recently ac­quired cortical use button latches become popular. </span></p><p class="MsoNormal" style="text-align: justify; text-indent: 35.45pt; line-height: 150%;"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 14.0pt; mso-bidi-font-size: 9.0pt; line-height: 150%; color: #221e1f; mso-bidi-font-style: italic;">Objective:</span></strong><span style="font-size: 14.0pt; mso-bidi-font-size: 9.0pt; line-height: 150%; color: #221e1f; mso-bidi-font-style: italic;"> to evaluate the possibility of using own cortical locking fixation with adaptive loop based on the study of its mechanical characteristics. </span></p><p class="MsoNormal" style="text-align: justify; text-indent: 35.45pt; line-height: 150%;"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 14.0pt; mso-bidi-font-size: 9.0pt; line-height: 150%; color: #221e1f; mso-bidi-font-style: italic;">Methods:</span></strong><span style="font-size: 14.0pt; mso-bidi-font-size: 9.0pt; line-height: 150%; color: #221e1f; mso-bidi-font-style: italic;"> using the bursting of hydraulic machines tested two types of clamps with cortical adaptive loop: 1) Tight­Rope anterior crucial ligament (Arthrex Inc., Naples, FL) eg reverse thrust; 2) own, consisting of button plate and thread Fiberwire № 2 (Arthrex Inc., Naples, FL). To determineload ex­tension have made constant load of 50 H for 30 s. Next applied given sinusoidal cyclic preloading from 50 to 250 H with a fre­quency of 2 Hz. Repeat exertion after 50, 100, 500, 1 000 and 2 000 cycles of loading has been assessed. Stretched loop exten­sion of 1 mm/s to determine the maximum tensile strength. </span></p><p class="MsoNormal" style="text-align: justify; text-indent: 35.45pt; line-height: 150%;"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 14.0pt; mso-bidi-font-size: 9.0pt; line-height: 150%; color: #221e1f; mso-bidi-font-style: italic;">Re­sults:</span></strong><span style="font-size: 14.0pt; mso-bidi-font-size: 9.0pt; line-height: 150%; color: #221e1f; mso-bidi-font-style: italic;"> the mean values of load extension did not differ (p &gt; 0.05) in cortical locking own making ((2.07 ± 0.3) mm) and commer­cially available ((1.95 ± 0.2) mm). The difference between the to­tal cyclic extension after 2000 loading cycles was also statisti­cally significant — (1.1 ± 0.1) mm and factory (1.21 ± 0.13) mm in copyright holder. there is no difference overall in elongation (perednavantazhenoho and cyclic) — (3.05 ± 0.95) mm of plant holder, (3.28 ± 0.22) mm in own fixation device; maximum ten­sile strength — (876 ± 56) and (953 ± 48) H respectively. </span></p><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 14.0pt; mso-bidi-font-size: 9.0pt; font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; color: #221e1f; mso-ansi-language: RU; mso-fareast-language: RU; mso-bidi-language: AR-SA; mso-bidi-font-style: italic;">Conclu­sions:</span></strong><span style="font-size: 14.0pt; mso-bidi-font-size: 9.0pt; font-family: 'Times New Roman'; mso-fareast-font-family: 'Times New Roman'; color: #221e1f; mso-ansi-language: RU; mso-fareast-language: RU; mso-bidi-language: AR-SA; mso-bidi-font-style: italic;"> yielded similar mechanical characteristics of the studied devices such as sufficient tensile strength and elongation op­portunity, allow us to recommend them for use in reconstruc­tive surgery of anterior crucial ligament.</span> ER -