Development of Extor Pins for Extor External Fixator.
- Author:
Joo Chul IHN
;
Shin Yoon KIM
;
Byung Chul PARK
;
Hee Soo KYUNG
;
Dong Lyul YANG
- Publication Type:Original Article
- Keywords:
External Fixator;
Extor Pin
- MeSH:
External Fixators*;
Femur;
Fractures, Open;
Incidence;
Korea;
Osteomyelitis;
Stainless Steel
- From:The Journal of the Korean Orthopaedic Association
1997;32(1):141-147
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
We developed Extor pins for Extor external fixator, it made of stainless steel and applied it clinically to manage open fractures and chronic osteomyelitis from December, 1993 to January, 1995. The main aim of present study is to compare the mechanical strength and biocompatibillity between Extor pins and AO Schanz pins, and to determine the safety and possibility of clinical use. We performed the biomechanical test for bending, tension, and shearing of pin itself using universal testing machine (LR5OK) and pullout test in cadeveric cortical femur to determine the bone holding power. There was no significant difference between Extor and AO Schanz pin (p>0.05). Clinically, the incidence of pin site infection, pin lossening, radiological rarefaction, and pathological change were not different significantly (p>0.05). Although Extor pins are somewhat different from AO Shanz pins in material and design characteristics, we can find the safety and possibility of clinical use of Extor pins made in Korea.
