Journal of orthopaedic surgery (Hong Kong)
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J Orthop Surg (Hong Kong) · May 2017
Randomized Controlled TrialEffect of intraoperative autologous transfusion techniques on perioperative hemoglobin level in idiopathic scoliosis patients undergoing posterior spinal fusion: A prospective randomized trial.
Massive blood loss during posterior spinal fusion for adolescent idiopathic scoliosis remains a significant risk for patients. There is no consensus on the benefit of acute normovolemic hemodilution (ANH) or intraoperative cell salvage (ICS) in scoliosis surgery. ⋯ The addition of ANH to ICS in posterior spinal fusion surgery for AIS resulted in a similar decrease in hemoglobin levels between preoperative values and at 24 h postoperatively.
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J Orthop Surg (Hong Kong) · May 2017
Prospective study of surgical fixation of radial head fractures using cannulated headless compression screws for simple and complex radial head fractures.
Fixing the two-part Mason II radial head fracture using screws is becoming a popular practice. However, the screw fixation efficacy for three-part Mason III and IV fractures is controversial. The purpose of this study is to determine the effectiveness of using a uniform technique of headless compression screw fixation in simple, isolated Mason II and complex three-part Mason III and IV radial head fractures in terms of functional outcome, treatment efficiency and assessment of complications with the procedure. ⋯ Overall clinical and functional outcomes of this technique are satisfactory in both simple and complex fracture groups, with simple Mason II fracture group doing better than the complex three-part Mason III and IV fractures in terms of Mayo Elbow Score and range of motion. Screw fixation has the advantage of less periosteal stripping and less impingement compared to other fixation methods and also allows for flexible fixation in constrained areas. Headless compression screw fixation can be considered as a method of fracture fixation for both simple and complex three-part radial head fractures.
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J Orthop Surg (Hong Kong) · May 2017
Comparative StudyCircular external fixation and cemented PMMA spacers for the treatment of complex tibial fractures and infected nonunions with segmental bone loss.
The purpose of this study was to compare the outcome of combined circular external fixation and cemented polymethylmethacrylate (PMMA) spacer application between a cohort of patients with grade 3 open fractures and infected tibial nonunions and concomitant segmental bone loss. ⋯ The findings of this study suggest that patients were treated for infected nonunion with segmental bone loss using circular external fixation, distraction osteogenesis, and antibiotic-impregnated PMMA spacers, and the spacers may not offer any advantage over a conventional approach using the principles of osteogenesis only. In contrast, antibiotic-impregnated spacers for open tibial trauma were advantageous and reduced the EFI considerably.
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J Orthop Surg (Hong Kong) · May 2017
Comparative StudyA biomechanical comparison of the two- and four-hole side-plate dynamic hip screw in an osteoporotic composite femur model.
The objectives of this study were (1) to compare the axial and torsional stiffness of a dynamic hip screw with a two- and four-hole side-plate in a synthetic model of a healed and stable intertrochanteric femur fracture and (2) to evaluate the load to failure, as well as propensity to peri-implant fracture. ⋯ The results of this study demonstrate that DHS constructs with a two- or four-hole side-plate are biomechanically comparable with regard to axial and torsional stiffness and load to failure in an osteoporotic composite femur model. In a healed intertrochanteric fracture model, a two-hole construct did not appear to be more prone to peri-implant fracture. To date, a biomechanical comparison of these two implants with regard to torsional forces has not been reported.
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J Orthop Surg (Hong Kong) · May 2017
Analysis of functional outcome of Hoffa fractures: A retrospective review of 32 patients.
Hoffa fractures are uncommon intra-articular fractures of femoral condyle in coronal plane. The purpose of our study is to assess radiologic and functional outcome in operatively treated Hoffa fractures. ⋯ Operative treatment of Hoffa fractures yields fairly good functional outcome. One must endeavor to achieve adequate intraoperative exposure and stable congruous articular reconstruction. Early aggressive physical therapy is a harbinger of optimal outcome.