Unilateral versus bilateral iliac screws for spinopelvic fixation: are two screws better than one?
نویسندگان
چکیده
منابع مشابه
Free-hand placement of iliac screws for spinopelvic fixation based on anatomical landmarks: technical note
BACKGROUND The placement of iliac screws is a biomechanically sound method for the stabilization of long multi-segment lumbar constructs. Traditional techniques for the placement of iliac screws often involve either substantial iliac muscle dissection for visualization of screw trajectory based on bony landmarks, or alternatively the use of intra-operative imaging to visualize these landmarks a...
متن کاملUse of S2-Alar-iliac Screws Associated With Less Complications Than Iliac Screws in Adult Lumbosacropelvic Fixation.
STUDY DESIGN Retrospective comparative study. OBJECTIVE To compare clinical and radiographic outcomes between the S2-alar-iliac (S2AI) and the iliac screw (IS) techniques in the adult population and clarify the clinical strength of S2AI screws. SUMMARY OF BACKGROUND DATA S2AI screws have been described as an alternative method for lumbosacropelvic fixation in place of ISs. The S2AI techniqu...
متن کاملFracture fixation with two locking screws versus three non-locking screws
OBJECTIVES We aimed to further evaluate the biomechanical characteristics of two locking screws versus three standard bicortical screws in synthetic models of normal and osteoporotic bone. METHODS Synthetic tubular bone models representing normal bone density and osteoporotic bone density were used. Artificial fracture gaps of 1 cm were created in each specimen before fixation with one of two...
متن کاملTwo Are Better than One?
This paper uses Markov-switching specifications to create a hybrid model with time-varying loading on each of chartist and fundamentalist approaches. The empirical data include the U.S. dollar exchange rates of four Asian tiger countries’ currencies including NTD, SGD, HKD and KOW from 1980 to 2000. Our empirical findings are consistent with the following notions. First, the forecasting perform...
متن کاملBiomechanical Comparison of Unilateral and Bilateral Pedicle Screws
1 Objective. Little is known about the biomechanical effectiveness of transforaminal lumbar 2 interbody fusion (TLIF) cages in different positioning and various posterior implants used 3 after decompressive surgery. The use of the various implants will induce the stability change 4 in stresses and range of motion (ROM) at the surgical and adjacent segments. Unilateral 5 pedicle screw with or wi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Neurosurgical Focus
سال: 2014
ISSN: 1092-0684
DOI: 10.3171/2014.3.focus1428