A Novel Unidirectional Porous β-tricalcium Phosphate Bone Substitute in Orthopedic Surgery : A Technical Note and Case Illustrations

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Ten-year results of concentrated autologous bone marrow aspirate transplantation for osteonecrosis of the femoral head: a retrospective study

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Percutaneous endoscopic discectomy might be effective in selected cases of pyogenic spondylitis

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Positive-pressure ventilation attenuates subarachnoid-pleural fistula after thoracic spinal surgery: A report of two cases

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Muscle Synergies During Repetitive Stoop Lifting With a Bioelectrically-Controlled Lumbar Support Exoskeleton

Lower back problems are common in the world, which leads to the development of various lumbar support exoskeletons to alleviate this problem. In general, previous studies evaluating lumbar support devices quantified assistance by reporting the reduction in back muscle activity and perceived fatigue. However, despite the beneficial effects of such devices, the effects of using such exoskeletons on muscle coordination are not well-studied. In this study, we examined the short-term change in muscle coordination of subjects using a bioelectrically-controlled lumbar support exoskeleton in a fatiguing stoop lifting task with muscle synergy analysis. Results indicate that muscle coordination changes were dominated by changes in timing coefficients, with minimal change in muscle synergy vectors. Analysis on muscle coordination changes would be useful to design future generations of exoskeletons

Effects of Gait Treatment With a Single-Leg Hybrid Assistive Limb System After Acute Stroke: A Non-randomized Clinical Trial

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Communication about incisional hernia through an iliac crest bone harvest site after reoperative cervical anterior fusion

We report the case of an incisional hernia through the wound made for iliac bone harvest for re-operative cervical fusion surgery. A 50-year old woman underwent revision anterior cervical discectomy and fusion (ACDF) using a poly ether ether ketone cage and titanium alloy locking plate for adjacent segment disease after prior ACDF. As an autograft, iliac cancellous bone was again harvested from the left iliac crest, using the prior surgical scar. Although only cancellous bone from the medial side of the iliac bone was collected, leaving the iliac crest intact, she complained of a protrusion from the left lower abdomen, of which diagnosis was an incisional hernia through the iliac bone harvest site. Formation of an incisional hernia at the iliac bone harvest site is a possible complication after spine surgery. Care must be taken for oblique abdominal muscle repair around the iliac bone harvest site, particularly in re-operative cases. Keywords: Incisional hernia, Iliac crest, Bone graft, Spinal fusion surger