Scientific Articles
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Three-dimensional analysis of spinal deformity correction in adolescent idiopathic scoliosis: comparison of two distinct techniques
Evaluating instrumentation techniques in adolescent scoliosis patients. This study compared rod materials, correction techniques, and levels fused.
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When is an incidental durotomy a complication during lumbar spine surgery?
A paper evaluating the evidence behind the history and treatment of dural tears.
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Dural Tears
We present a brief overview of the anatomy of dural tears, diagnostic techniques, and a review of treatment options.
Sikora-Klak J, Gurusamy P, Allen RT. Dural tears. Seminars in Spine Surgery. 2019; 31 (4): 100753.
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The Effect of Abnormal Vitamin D Levels in Athletes
A review of scientific literature regarding Vitamin D in professional athletes across many sports, including soccer, football, and ice hockey.
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Decoupled epineurial and axonal deformation in mouse median and ulnar nerves
In this study we have proposed a neuromechanical model whereby axons can unravel along their entire length due to looser mechanical coupling to the peri/epineurium. These findings have major implications for understanding nerve biomechanics and dysfunction.
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Regional Ulnar Nerve Strain Following Decompression and Anterior Subcutaneous Transposition in Patients With Cubital Tunnel Syndrome
This data provides insight into how surgery resolves and redistributes traction on the ulnar nerve. These findings may help inform which surgical procedure to perform for a specific patient, guide rehabilitation protocols, and suggest regions of anatomic concern during index and revision surgery.
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How Do Preoperative Medications Influence Outcomes After Total Joint Arthroplasty?
Patients taking more medications were more frequently discharged to an extended-care facilities and had increased length of stays and readmission rates. Narcotics and diabetic medications had the greatest influence. Category and quantity of preoperative medications can be used as predictors of outcomes after arthroplasty surgery.
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The Effect of Comorbidities on Discharge Disposition and Readmission for Total Joint Arthroplasty Patients
Univariate and multivariate analyses were conducted on total joint arthroplasty patients to evaluate their relationships with readmission and discharge disposition.
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The Evaluation of Comorbidities Relative to Length of Stay for Total Joint Arthroplasty Patients
Age and gender were associated with a longer length of stay after total hip arthroplasty, whereas only age was a significant factor after total knee arthroplasty. Development of age-adjusted length of stay models may help aid patient expectations and risk management.
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Intraoperative Periprosthetic Femur Fracture: A Biomechanical Analysis of Cerclage Fixation
We compared cobalt chrome (CoCr) cables, synthetic cables, monofilament wires and hose clamps under axial compressive and torsional loading. Overall, the CoCr cable and hose clamp had the highest construct stiffness and least reduction in stiffness with increased loading. They were not demonstrably different from each other.
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Comparison of Surgical Outcomes Between a Triplane Proximal Femoral Osteotomy and the Modified Dunn Procedure for Stable, Moderate to Severe Slipped Capital Femoral Epiphysis
All 4 instances of avascular necrosis in this study of stable slips, however, were in the modified Dunn group. As this can be a devastating complication leading to early total hip arthroplasty, we advise against the modified Dunn in stable slipped capital femoral epiphysis patients.
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Dynamic "Homemade" Digital External Fixators for Proximal Interphalangeal Joint Injuries
The purpose of this article is to discuss the indications and surgical techniques of "homemade" digital external fixators constructed from easily available and inexpensive hardware (K-wires and dental rubber bands).
Book Chapter
Spinal Cord Injury Chapter
Video Atlas of Spine Surgery
Sikora-Klak J, O’Leary R, Allen TA. Spinal cord injury. In: AN HS, ed. Video Atlas of Spine Surgery. New York: Thieme Medical Publishers, 2020: 79-86.
Scientific Presentations/Exhibitions
1. Comorbidities and Discharge Disposition/Readmission in Total Joint Arthroplasty Patients. (Sikora-Klak J, Bergum C, Flynn J, Markel DC). Michigan Orthopaedic Society Annual Scientific Meeting; Mackinaw Island, MI. Poster presentation. June 18, 2016.
2. Stable, Moderate To Severe Slipped Capital Femoral Epiphysis: Choosing A Staged Imhauser Correction Versus A Single Event Modified Dunn Procedure. (Sikora-Klak J, Bomar JD, Paik CN, Edmonds EW, Wenger DR, Upasani VV. Pediatric). Orthopaedic Association Annual Meeting; Indianapolis, IN. Poster Presentation. April 28, 2016.
3. Comorbidities and Discharge Disposition/Readmission in Total Joint Arthroplasty Patients. (Sikora-Klak J, Bergum C, Flynn J, Markel DC. Mid-America Orthopaedic Association Annual Meeting; Bonita Springs, FL. Podium presentation. April 14, 2016.
4. Closed Reduction Percutaneous Fixation Versus Open Reduction Internal Fixation of Intra-articular Calcaneal Fractures. (Feria-Arias E, Sikora-Klak J, McCarthy S, Meehan RE). Mid-American Orthopaedics Association Annual Meeting; Bonita Springs, FL. Poster Presentation. April 14, 2016.
5. How Do Pre-Operative Medications Influence Outcomes In Total-Joint Arthroplasty? (Zarling BJ, Sikora-Klak J, Bergum C, Markel DC). Mid-America Orthopaedic Association Annual Meeting; Bonita Springs, FL. Podium presentation. April 14, 2016.
6. Regional Ulnar Nerve Strain Following Decompression and Anterior Decompression and Anterior Transposition in Patients with Cubital Tunnel Syndrome. (Foran I, Vaz K, Sikora-Klak J, Hentzen ER, Shah SB). Orthopedic Research Society Annual Meeting; Orlando, FL. Poster presentation. March 6, 2016.
7. Comorbidities and Discharge Disposition/Readmission in Total Joint Arthroplasty Patients. (Sikora-Klak J, Bergum C, Flynn J, Markel DC). Orthopedic Research Society Annual Meeting; Orlando, FL. Poster presentation. March 6, 2016.
8. Regional Ulnar Nerve Strain Following Decompression and Anterior Decompression and Anterior Transposition in Patients with Cubital Tunnel Syndrome. (Foran I, Vaz K, Sikora-Klak J, Hentzen ER, Shah SB). American Association of Orthopedic Surgeons Annual Meeting; Orlando, FL. Poster Presentation. March 2, 2016.
9. Closed Reduction Percutaneous Fixation Versus Open Reduction Internal Fixation of Intra-articular Calcaneal Fractures. (Feria-Arias E, Sikora-Klak J, McCarthy S, Meehan RE). Michigan Orthopaedic Society Annual Scientific Meeting; Mackinac Island, MI. Podium Presentation. June 20, 2015.
10. Rivaroxaban versus Enoxaparin for Venous Thromboembolism Prophylaxis after Hip and Knee Arthroplasty (Charters MA, Frisch NB, Wessell NM, Sikora-Klak J, Yu S, Jeffries JJ, Les CM, Silverton CD, Laker M.) Mid-America Orthopaedic Association Annual Meeting; San Antonio, TX. Podium presentation. April 24, 2014.
11. Predictors and Complications of Blood Transfusion in Total Hip and Knee Arthroplasty. (Frisch NB, Wessell NM, Charters MA, Sikora-Klak J, Yu S, Dobson C, Jeffries JJ, Silverton CD, Laker M.). Mid-America Orthopaedic Association Annual Meeting; San Antonio, TX. Podium presentation. April 24, 2014.
12. Rivaroxaban versus Enoxaparin for Venous Thromboembolism Prophylaxis after Hip and Knee Arthroplasty. (Charters MA, Frisch NB, Wessell NM, Sikora-Klak J, Yu S, Jeffries JJ, Les CM, Silverton CD, Laker M.) American Association of Orthopedic Surgeons Annual Meeting; New Orleans, LA. Podium presentation. March 12, 2014.
13. Rivaroxaban versus Enoxaparin for Venous Thromboembolism Prophylaxis after Hip and Knee Arthroplasty. (Charters MA, Frisch NB, Wessell NM, Sikora-Klak J, Yu S, Jeffries JJ, Les CM, Silverton CD, Laker M.) American Association of Hip and Knee Surgeons Annual Meeting; Dallas, TX. Poster presentation. November 9, 2013.
14. Predictors and Complications of Blood Transfusion in Total Hip and Knee Arthroplasty. (Frisch NB, Wessell NM, Charters MA, Sikora-Klak J, Yu S, Dobson C, Jeffries JJ, Silverton CD, Laker M.). International Society for Technology in Arthroplasty Annual Meeting; Palm Beach, FL. Poster presentation. October 16, 2013.
15. Rivaroxaban versus Enoxaparin for Venous Thromboembolism Prophylaxis after Hip and Knee Arthroplasty. (Charters MA, Frisch NB, Wessell NM, Sikora-Klak J, Yu S, Jeffries JJ, Les CM, Silverton CD, Laker M.) International Society for Technology in Arthroplasty Annual Meeting; Palm Beach, FL. Poster presentation. October 16, 2013.
16. Rivaroxaban versus Enoxaparin for Venous Thromboembolism Prophylaxis after Hip and Knee Arthroplasty. (Charters MA, Frisch NB, Wessell NM, Sikora-Klak J, Yu S, Jeffries JJ, Les CM, Silverton CD, Laker M.) Michigan Orthopaedic Society Annual Scientific Program; Mackinac Island, MI. Podium presentation. June 22, 2013.