Publications by authors named "Lior Shabtai"

Previous studies on lengthening for achondroplasia have reported bilateral extensive femoral lengthening followed by bilateral extensive tibial lengthening. To decrease trauma on soft tissues and joints, we propose bilateral simultaneous moderate femoral lengthening and moderate tibial lengthening followed by a similar repeat lengthening a few years later. Fifty patients with achondroplasia underwent 65 simultaneous bilateral femoral and tibial lengthening procedures.

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The objective of this study is to report operative time and associated complications of six types of implants and to determine if surgeons are adequately compensated. Hardware removals were analyzed from 2014-2019. Implants were flexible nails, intramedullary rigid nails, long plates, screw(s), single guided-growth plates, and multiple guided-growth plates.

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Introduction: PRECICE intramedullary magnetic lengthening nails, introduced in 2011, have changed the landscape of long bone limb lengthening. The implants have a stroke ranging from 5 to 8 cm, but it may be desirable to perform part of the lengthening at one treatment, allow bone healing, leave the implant in place, dormant, and then return one or more years later to re-lengthen with the same implant. We call this the "sleeper" nail concept.

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Purpose: The aim of this study was to evaluate the success of guided growth by temporal hemiepiphysiodesis of the lateral proximal tibia as a first line treatment option for Blount disease.

Methods: This was a retrospective multicentre study conducted in five centres, covering data on 55 limbs in 45 patients, with an average follow-up of 24.5 months following plate insertion.

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Avascular necrosis (AVN) of the distal humerus is a known complication of lateral condyle fractures yet the specific rate of occurrence is unknown. The purposes of this study are to analyze the incidence, outcomes, and risk factors for AVN following lateral condyle fractures. A retrospective chart review of children diagnosed with a lateral condyle fracture between 2001 and 2014 at level-1 tertiary pediatric center was completed.

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Background: The management of pediatric type I open fractures remains controversial. The aim of this study is to compare outcomes in type I open fractures managed with superficial wound debridement and antibiotics in the emergency department (ED) (nonoperative management) to patients managed with operative debridement and antibiotics (operative management).

Methods: A multicenter retrospective review was performed of all pediatric type I open forearm, wrist, and tibia fractures treated at 4 high volume pediatric centers between 2000 and 2015.

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The goal of this study was to compare open reduction versus percutaneous fixation of adolescent ankle fractures with regards to the incidence of growth disturbance. We performed a retrospective cohort analysis of adolescent patients with triplane or Tillaux fractures. There was an even distribution of triplane fractures and mean initial displacement between cohorts.

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Introduction: Lateral condyle fractures are a common pediatric elbow injury. Nonunion is a known complication of this injury but its incidence and causative risk factors are unknown. Further, a clear and consistent definition of nonunion for pediatric lateral condyle fractures does not exist.

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Background and purpose - Femoral lengthening may result in decrease in knee range of motion (ROM) and quadriceps and hamstring muscle weakness. We evaluated preoperative and postoperative knee ROM, hamstring muscle strength, and quadriceps muscle strength in a diverse group of patients undergoing femoral lengthening. We hypothesized that lengthening would not result in a significant change in knee ROM or muscle strength.

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Growth modulation using tension band plates (TBP) has been shown to be a safe, effective, and popular method for correcting pediatric frontal plane angular deformity around the knee. Recently, TBPs have been used to achieve reversible epiphysiodesis to treat limb-length discrepancy. Many surgeons have expanded the indications to include diagnoses other than frontal plane angular deformities, anatomic sites other than the knee, and correction of sagittal and oblique plane deformities.

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There is uniform agreement in the literature that radial neck fracture with <30 degrees of angulation and minimal translation in younger children can be managed by casting alone, without the need for closed reduction. For more severe fractures, closed manipulation techniques followed by percutaneous reduction technique (in case closed reduction fails) should be performed before switching to an open reduction technique. Debate still exists regarding the best treatment protocol for severely displaced fractures.

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Background: Despite recent popularity of sacral alar iliac (SAI) screws for fusion to the pelvis for neuromuscular scoliosis, there are little data regarding the failure rate of this technique compared with traditional modes of iliac fixation. Theoretical advantages of the SAI screws are obviating the need for a rod to iliac screw connector and a lower implant profile. The purpose of this study is to determine whether SAI screws have fewer failures than iliac screws in neuromuscular scoliosis.

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Background: Evaluation of the results of treatment for clubfoot by the Ponseti technique is based on clinical and functional parameters. There is a need to establish universally recognized quantitative measurements to compare, better understand, and more precisely evaluate therapeutic outcome.

Methods: Nine angles were measured on standard radiographs of 145 children with idiopathic clubfeet treated between 2000 and 2010 with the Ponseti method.

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External fixation has long been used for limb lengthening but can result in many complications, such as tethering of the soft tissues, pain, decreased joint motion, scarring, and nerve injury. Recently, a controllable, telescopic, internal lengthening nail was developed to address many of these issues and hopefully improve the overall experience for the patient. The satisfaction rates of internal and external fixation for limb lengthening were compared in 16 patients, all of whom have experienced both methods.

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The development of knee flexion contractures is among the most common problems and complications associated with lengthening the femur with an internal device or external fixator. Conservative treatment strategies include physical therapy, serial casting, and low-load prolonged stretching with commercially available splinting systems. The authors developed an individually molded, low-cost custom knee device with polyester synthetic conformable casting material to treat knee flexion contractures.

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Ten children with congenital pseudarthrosis of the tibia were treated with resection of pathologic bone, bone grafting, intramedullary rodding, compression with circular frame, simultaneous proximal tibia lengthening, and bone morphologic proteins. Thirteen operations were performed to achieve union. Four patients underwent simultaneous lengthening and four patients received recombinant human bone morphologic protein.

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The authors compared the results of treating nonunion with either bone morphogenetic protein (BMP)-7 or BMP-2. Between 2001 and 2009, 214 limb segments were treated for nonunion with either BMP-7 or BMP-2 at the authors' institution. Sixty-three subjects received 76 units of BMP-7.

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The Ponseti method has become the gold standard for the treatment of idiopathic clubfoot. Its safety and efficacy has been demonstrated extensively in the literature, leading to increased use around the world over the last two decades. This has been demonstrated by the increase in Ponseti related PubMed publications from many countries.

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The effectiveness of using the Reamer/Irrigator/Aspirator (RIA) System (Synthes, Inc, West Chester, Pennsylvania) to obtain bone graft from the intramedullary canal of long bones for the treatment of bone defects and nonunions has been previously documented. However, there is nothing in the literature discussing the potential for reaming the same canal at subsequent surgeries. The authors detail their experience of 8 instances of sequential reaming in 7 patients.

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Background: Patients with congenital limb shortening can present with joint instability, soft tissue contractures, and significant leg length discrepancy. Classically, lengthening is done with external fixation, which can result in scarring, pin site infection, loss of motion, and pain. We therefore developed an alternative to this approach, a new, controllable, internal lengthening device for patients with congenital limb shortening.

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Objectives: This study aimed to evaluate the incidence and severity of pin tract infections in a series of patients treated by Closed reduction external fixation (CREF) for proximal humeral fractures.

Design: Retrospective review of medical charts and radiographs.

Setting: Academic level-1 trauma center.

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Avascular necrosis (AVN) is a multifactorial, heterogeneous group of disorders that lead to a final common pathway of mechanical failure of the bone joint dysfunction. Pain in avascular necrosis is the result of resorption of necrotic bone during revascularization, before new bone has formed or consolidated enough for load-bearing. Biphosphonate can reduce bone resorption, thus prolonging the bone formation phase available, so that structural failure may be avoided.

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Background: Arthroscopic Bankart repair (ABR) is a standard treatment for recurrent anterior shoulder instability. Young age, hyperlaxity, loss of bone stock and multidirectional or voluntary type of instability are all associated with failure of this procedure. Rotator interval laxity is associated with shoulder instability, whereas rotator interval closure increases humeral head stability and reduces shoulder range of motion.

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