Biomechanical Comparison of Polymethylmethacrylate Augmentation Methods in Failed Pedicle Screw Revision.

Aim: To compare biomechanical results between different polymethylmethacrylate (PMMA) augmentation methods on failed lumbar pedicle screw models of animal vertebrae.

Material And Methods: Thirty lumbar vertebrae were harvested from six calves, and their bone mineral density was measured. 60 Polyaxial pedicle screws were inserted to all vertebrae.

Is simple decompression enough for the treatment of idiopathic cubital tunnel syndrome: A prospective comparative study analyzing the outcomes of simple decompression versus partial medial epicondylectomy.

Objectives: This study aims to compare the clinical and functional outcomes of simple in-situ decompression and partial medial epicondylectomy for the treatment of idiopathic cubital tunnel syndrome (CuTS).

Patients And Methods: Between March 2014 and December 2016, 71 patients (31 males, 40 females; mean age 46.7 years; range, 38 to 62 years) with CuTS scheduled to undergo simple in-situ decompression (group 1) or partial medial epicondylectomy (group 2) were prospectively reviewed.

Treatment of Full-Thickness Cartilage Defects with Pedunculated and Free Synovial Grafts: A Comparative Study in an Animal Model.

Aims And Objectives: The purpose of this study was to compare the potential effects of pedunculated and free synovial grafts in the repair of full-thickness articular cartilage defects on an animal model with histological and immunohistochemical analysis.

Materials And Methods: A comparative study in an animal model was performed with 24 rabbits, divided into two groups. Full-thickness cartilage defects were created bilaterally on the knees of all rabbits.

Outcomes for core decompression with multiple drilling of the osteonecrosis of the femoral head in patients with solid organ transplantation.

Objectives: This study aims to investigate the clinical and radiological outcomes of core decompression surgery performed with multiple drilling in solid organ transplantation patients with osteonecrosis of femoral head (ONFH) and evaluate the effectiveness of this procedure in regard to duration of corticosteroid use and stage of osteonecrosis.

Patients And Methods: A total of 22 solid organ transplantation (kidney, liver or heart) patients (14 males, 8 females; mean age 43.3 years; range, 23 to 67 years) who were scheduled to undergo core decompression surgery with multiple drilling for ONFH were evaluated.

Platelet-rich plasma decreases fibroblastic activity and woven bone formation with no significant immunohistochemical effect on long-bone healing: An experimental animal study with radiological outcomes.

Purpose: This study aimed to analyze the immunohistochemical effect of platelet-rich plasma (PRP) on healing of long-bone fractures in terms of bone morphogenetic protein-2 (BMP-2), vascular endothelial growth factor (VEGF), the Ki-67 proliferation index, and radiological and histological analyses.

Methods: Sixteen adult rabbits, whose right femoral diaphysis was fractured and fixed with Kirschner wires, were randomly divided into two groups, control and PRP (groups A and B, respectively). PRP was given to group B at 1 week postoperatively, and all animals were euthanized after 12 weeks.

Internal fixation of bilateral sacroiliac dislocation with transiliac locked plate: a biomechanical study on pelvic models.

Objective: The purpose of this study was to analyze and compare the mechanical characteristics of a new iliosacral fixation technique (bilateral S1 pedicle fixation through a transiliac locked plate) for bilateral sacroiliac dislocations with other previously described methods.

Methods: Bilateral sacroiliac dislocations were created in 21 pelvic models and divided into three different fixation method groups. Group 1 was fixed using posterior tension band plating with a 3.

Comparison of repair techniques in small and medium-sized rotator cuff tears in cadaveric sheep shoulders.

Objective: The aim of this study was to compare new knotless single-row and double-row suture anchor techniques with traditional transosseous suture techniques for different sized rotator cuff tears in an animal model.

Methods: The study included 56 cadaveric sheep shoulders. Supraspinatus cuff tears of 1 cm repaired with new knotless single-row suture anchor technique and supraspinatus and infraspinatus rotator cuff tears of 3 cm repaired with double-row suture anchor technique were compared to traditional transosseous suture techniques and control groups.

Comparison of tunnel expansion and isometric muscle strength after ACL reconstruction with single- or dual-bundle hamstring allograft: a prospective, randomized study.

Objective: The aim of this study was to compare tunnel expansion and isokinetic muscle strength after single- and dual-bundle reconstruction of the anterior cruciate ligament (ACL).

Methods: This study included 34 patients who underwent ACL reconstruction in our clinic between November 2007 and March 2008. Eighteen patients (average age: 27.

A lipoma causing separation of toes in the second web space of the foot.

Lipomas are common and benign soft tissue neoplasms which are composed of fat cells. These tumors often develop where adipose tissue is present; however, they can be rarely found in the foot. In this article, we present a 55-year-old male case with a lipoma leading to separating toes in the second web space of the foot and mechanical discomfort.

Primary extracranial meningioma of the lower limb.

This paper is about a primary extracranial meningioma case of a 40-year-old male patient who presented with a complaint of a rapidly growing painless stiff mass located in his left thigh. The magnetic resonance imaging examination revealed that the lesion was well-circumscribed and with isosignal intensity to muscle on T1-weighted images and with a relatively hiperintense on T2-weighted images. The histopathological analysis of the specimens both from the incisional biopsy and the excisional surgery were typical of meningioma showing spindle cell proliferation with a whirling pattern.

Extracorporeal shock waves in articular cartilage defects in the rats.

Thirty adult Sprague-Dawley rats were used to assess the nature of healing tissues in hyaline cartilage defects and to compare the healing in defects treated with shock waves, with those in defects without treatment. A 2 × 2 mm cartilage defect with exposed cancellous bone was created in a nonweight-bearing area of each medial femoral condyle. Each right knee defect was received extracorporeal shock waves (Swiss Dolorclast) of 500 impulses in 5 min at 2 bar (comparative to 0.

Correlations of isokinetic measurements with tendon healing following open repair of rotator cuff tears.

The aim of this study was to investigate the correlation of tendon integrity following open cuff repairs with functional and isokinetic strength measurements. Twenty-six shoulders of 25 patients were included in this study. At the final follow-up, 14 repairs (53.

Biomechanical and histological comparison of the influence of oestrogen deficient state on tendon healing potential in rats.

Thirty-six female Sprague-Dawley rats were divided into two groups: oophrectomised (oestrogen deficient) rats and sham operated (oestrogen maintained) rats. Rats were sacrificed at six, ten, and 14 weeks. The rats were randomly chosen to have biomechanical evaluation on one side and histological evaluation on the other.

Bone fracture: an unusual presentation of acute megakaryoblastic leukemia.

Some clinical manifestations of acute leukemia in children can mimic orthopedic conditions, and t is variable presentation often makes diagnosis difficult. Bone changes in leukemia are well documented, but there are only a few accounts of children with acute leukemia who present with bone fractures. This report describes a case of this rare combination in a very young boy who presented with fractures of both proximal humerus and left proximal femur and massive periosteal reactions of both humerus and femur and also cystic lesions of proximal femur and iliac bone accompanying aggressive acute megakaryoblastic leukemia.

Analysis of modified oblique Keller procedure for severe hallux rigidus.

Background: Several procedures have been described for treating hallux rigidus, but all have limitations. The purpose of this study is to evaluate the clinical and radiologic results of a modified oblique Keller procedure for treating hallux rigidus.

Materials And Methods: Eleven patients (13 feet) with Grade III or IV hallux rigidus were treated by modified oblique Keller procedure.

[Development of osteonecrosis after arthroscopic meniscal and chondral knee surgery: a report of five cases].

The development of osteonecrosis after arthroscopic surgery has been associated with meniscectomy, chondral surgery, and the use of thermal energy. This paper presents five cases, four of which fulfilled the temporal criteria for postarthroscopy necrosis, i.e.

Successful use of recombinant factor VIIa (NovoSeven) in children with compartment syndrome: two case reports.

Compartment syndrome (CS) is an uncommon bleeding manifestation in patients with liver failure and end-stage renal disease (ESRD). Although prompt intervention is paramount in preventing the tissue necrosis and the permanent functional deficits that may be associated with untreated CS, the indications for initiating therapies for children with CS are not standardized. In this report, we present 2 children, one with ESRD and the other with liver failure, who have CS related to life-threatening bleeding complications and were treated with recombinant factor VIIa (rFVIIa).

[Transforaminal epidural steroid injection under computed tomography guidance in relieving lumbosacral radicular pain].

Objectives: We analyzed the efficacy of transforaminal epidural steroid injections under computed tomography (CT) in relieving lumbosacral radicular pain due to spinal stenosis.

Methods: Forty-two patients (7 males, 35 females; mean age 67 years; range 34 to 90 years) with lumbosacral radicular pain due to spinal stenosis were prospectively monitored following transforaminal epidural steroid injections under computed tomography. Injections were repeated twice in two patients (4.

Pedunculated synovium grafts in articular cartilage defects in rabbits.

A rabbit model was used to assess the nature of healing tissues in hyaline cartilage defects and to compare the healing in defects treated with pedunculated synovium grafts to those in defects without synovial grafting. Both knees of 28 1-year-old rabbits were operated. A 3 x 2-mm cartilage defect that exposed cancellous bone was created in the non-weight-bearing area of each medial femoral condyle.

Is prematurity important in ultrasonographic hip typing?

The aim of this study was to determine whether prematurity is important with respect to hip typing and planning of treatment/follow-up in newborns assessed with the Graf's ultrasonography method. Between January 1998 and 2003, 1592 neonates; preterm (n=432) and term (n=1160), had their hips ultrasonographically evaluated with Graf typing. There were no statistical differences between the two groups with respect to the numbers of hips that required follow-up assessment, or treatment.