Publications by authors named "Yoon-Ho Kwack"
We performed L1 posterior vertebral columnar resection and posterior correction for Andersson's lesion and thoracolumbar kyphosis in an ankylosing spondylitis patient during motor evoked potential (MEP) monitoring. We checked MEP intra-operatively, whenever a dangerous procedure for neural elements was performed, and no abnormal findings were seen during surgery. After the operation, we examined neurologic function in the recovery room; the patient showed a progressive neurologic deficit and no response to MEP.
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- A case report presented a successful series of spinal osteotomies on a patient with severe kyphotic deformity due to ankylosing spondylitis.
- The 48-year-old male patient had a significant "chin-on-pubis" deformity and underwent multiple surgical interventions, including hip arthroplasties and spinal osteotomies in various regions of the spine.
- Results showed significant improvement in spinal alignment and daily living activities, achieving remarkable correction angles without complications, marking a pioneering approach in this type of surgery.
Study Design: A prospective radiographic study.
Objectives: To analyze the relationship between craniocervical sagittal balance and thoracic inlet (TI) alignment and to present the parameters that would help predict physiological lordosis of the cervical spine.
Summary Of Background Data: The physiological cervical lordosis (CL) and related factors has not been clearly defined yet.
Study Design: A prospective clinical outcome study.
Objective: To analyze clinical outcome and prognostic factors of the epidural steroid injection (ESI) for cervical radiculopathy (CR) patients who were considered surgical candidates.
Summary Of Background Data: The clinical outcomes and prognostic factors of ESI for CR have not been consistently reported, and there has been no prospective study with long-term follow-up.
Article Synopsis
- This study investigates how to detect cervical pedicle screw (CPS) perforation using plain X-ray images, focusing on the screw's positioning.
- It includes 48 subjects, with a total of 205 screws analyzed, finding that the majority (84.9%) were correctly positioned, particularly those with heads in a neutral position and tips medial to the uncovertebral joint.
- There was a strong correlation between screw tip position and the degree of pedicle perforation, suggesting that proper placement can reduce risks of complications.
Study Design: A retrospective study.
Objective: To analyze incidence of asymptomatic cervical cord compression and related factors in lumbar stenosis patients.
Summary Of Background Data: Neural compression resulted from degenerative disc is not unusual in the asymptomatic cervical spine.
Ventricular tachycardia during arthroscopic shoulder surgery: a report of two cases.
Arch Orthop Trauma Surg
March 2010
We routinely have performed arthroscopic shoulder surgery under general anesthesia in the beach chair position using epinephrine (0.33 mg/L) saline irrigation. At a 2-week interval, two patients, a 19-year-old man scheduled to undergo an arthroscopic Bankart repair for left traumatic anterior instability and a 49-year-old woman scheduled for an arthroscopic rotator cuff repair for a left rotator cuff tear, were resuscitated by chest compression and defibrillation due to a sudden developed cardiogenic shock following ventricular tachycardia at the time of arthroscopic shoulder surgery.
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