Full Text Journal Articles by
Author John P Ketz

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Proximal Femoral Shortening and Varus Collapse After Fixation of "Stable" Pertrochanteric Femur Fractures.

David J Ciufo, John P Ketz,

<h4>Objectives</h4>To evaluate and compare femoral neck shortening and varus collapse in stable pertrochanteric femur fractures treated with sliding hip screws (SHSs) or cephalomedullary nails (CMNs).<h4>Design</h4>Retrospective review.<h4>Setting</h4>Academic medical center.<h4>Patients</h4>A total of 290 patients were included in the study. The average age was 82 years, and most were women. All sustained low-energy ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2021, 35(2):87-91]

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Clockwise Torque of Sliding Hip Screws: Is There a Right Side?

Franka S Würdemann, Rudolf W Poolman, Pieta Krijnen, Sofia Bzovsky, Sheila Sprague, Bart L Kaptein, Johannes H Hegeman, Emil H Schemitsch, Mohit Bhandari, Marc Swiontkowski, Inger B Schipper, ,

<h4>Objectives</h4>This study evaluated whether patients with a left-sided femoral neck fracture (FNF) treated with a sliding hip screw (SHS) had a higher implant failure rate than patients treated for a right-sided FNF. This was performed to determine the clinical relevance of the clockwise rotational torque of the femoral neck lag ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2020, 34 Suppl 3:S76-S80]

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Arthroplasty Versus Internal Fixation for the Treatment of Undisplaced Femoral Neck Fractures: A Retrospective Cohort Study.

Shaikh Afaq, Nathan N OʼHara, Emil H Schemitsch, Sofia Bzovsky, Sheila Sprague, Rudolf W Poolman, Frede Frihagen, Diane Heels-Ansdell, Mohit Bhandari, Marc Swiontkowski, Gerard P Slobogean, , ,

<h4>Objective</h4>To compare the 24-month risk of mortality between arthroplasty and internal fixation for undisplaced femoral neck fractures (FNFs).<h4>Design</h4>Retrospective cohort study.<h4>Setting</h4>Secondary data analysis of 2 multinational randomized controlled trials.<h4>Participants</h4>Patients aged 50 years or older with a FNF.<h4>Intervention</h4>Arthroplasty (n = 1441), including total hip arthroplasty and hemiarthroplasty, performed for a displaced FNF ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2020, 34 Suppl 3:S9-S14]

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Study Summaries.

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J Orthop Trauma (Journal of orthopaedic trauma)
[2020, 34 Suppl 3:Sii-Siii]

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Factors Associated With Mortality After Surgical Management of Femoral Neck Fractures.

Sofia Bzovsky, Marianne Comeau-Gauthier, Emil H Schemitsch, Marc Swiontkowski, Diane Heels-Ansdell, Frede Frihagen, Mohit Bhandari, Sheila Sprague, , ,

<h4>Background</h4>Hip fractures are recognized as one of the most devastating injuries impacting older adults because of the complications that follow. Mortality rates postsurgery can range from 14% to 58% within one year of fracture. We aimed to identify factors associated with increased risk of mortality within 24 months of a ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2020, 34 Suppl 3:S15-S21]

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Predictors of Loss to Follow-up in Hip Fracture Trials: A Secondary Analysis of the FAITH and HEALTH Trials.

Surabhi Sivaratnam, Marianne Comeau-Gauthier, Sheila Sprague, Emil H Schemitsch, Rudolf W Poolman, Frede Frihagen, Mohit Bhandari, Marc Swiontkowski, Sofia Bzovsky, , ,

<h4>Background</h4>Hip fracture trials often suffer substantial loss to follow-up due to difficulties locating and communicating with participants or when participants, or their family members, withdraw their consent. We aimed to determine which factors were associated with being unable to contact FAITH and HEALTH participants for their 24-month follow-up and to ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2020, 34 Suppl 3:S22-S28]

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Venous Thromboembolism in Hip Fracture Patients: A Subanalysis of the FAITH and HEALTH Trials.

David R W MacDonald, David Neilly, Prism S Schneider, Sofia Bzovsky, Sheila Sprague, Daniel Axelrod, Rudolf W Poolman, Frede Frihagen, Mohit Bhandari, Marc Swiontkowski, Emil H Schemitsch, Iain M Stevenson, , ,

<h4>Background</h4>The primary objective of this study was to determine the incidence of symptomatic venous thromboembolism (VTE), including pulmonary embolism (PE) and deep vein thrombosis (DVT), in the hip fracture population. Secondary objectives included determining timing of VTE diagnosis, VTE thromboprophylaxis given, and identifying any factors associated with VTE.<h4>Methods</h4>Using data from ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2020, 34 Suppl 3:S70-S75]

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The FAITH and HEALTH Trials: Are We Studying Different Hip Fracture Patient Populations?

Michael Blankstein, Emil H Schemitsch, Sofia Bzovsky, Daniel Axelrod, Rudolf W Poolman, Frede Frihagen, Mohit Bhandari, Marc Swiontkowski, Sheila Sprague, Patrick C Schottel, , ,

<h4>Background</h4>Over the past decade, 2 randomized controlled trials were performed to evaluate 2 surgical strategies (internal fixation and arthroplasty) for the treatment of low-energy femoral neck fractures in patients aged ≥50 years. We evaluated whether patient populations in both the FAITH and HEALTH trials had different baseline characteristics and compared ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2020, 34 Suppl 3:S1-S8]

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Chopart Amputation: Questioning the Clinical Efficacy of a Long-standing Surgical Option for Diabetic Foot Infection.

James D Brodell, Brian C Ayers, Judith F Baumhauer, Bennedict F DiGiovanni, A Samuel Flemister, John P Ketz, Irvin Oh,

<h4>Background</h4>Diabetic foot ulcers with associated infection and osteomyelitis often lead to partial or complete limb loss. Determination of the appropriate level for amputation based on the patient's baseline physical function, extent of infection, vascular patency, and comorbidities can be challenging. Although Chopart amputation preserves greater limb length than more proximal ... Read more >>

J Am Acad Orthop Surg (The Journal of the American Academy of Orthopaedic Surgeons)
[2020, 28(16):684-691]

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Immediate Improvement in Physical Function After Symptomatic Syndesmotic Screw Removal.

Jessica M Kohring, Alexander Greenstein, John T Gorczyca, Kyle T Judd, Gillian Soles, John P Ketz,

OBJECTIVE:To investigate the immediate impact of removing symptomatic syndesmotic screws on PROMIS outcomes and ankle range of motion (ROM) in patients who had previously undergone ankle fracture open reduction and internal fixation (ORIF) and syndesmotic fixation and later experienced functional limitations. DESIGN:Prospective cohort study. SETTING:Level 1-trauma center. PATIENTS/PARTICIPANTS:Fifty-eight patients with ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2020, 34(6):327-331]

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Pattern of recovery and outcomes of patient reported physical function and pain interference after ankle fusion: a retrospective cohort study.

Jessica M Kohring, Jeffrey R Houck, Irvin Oh, Adolf S Flemister, John P Ketz, Judith F Baumhauer,

BACKGROUND:Research on outcomes after ankle fusion focuses on basic activities of daily living, fusion rates, and gait parameters. Little has been reported on the patient's perspective after surgery. The purpose of this study was to determine the change in patient reported physical function and pain interference after ankle fusion surgery ... Read more >>

J Patient Rep Outcomes (Journal of patient-reported outcomes)
[2020, 4(1):40]

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Peritalar Kinematics With Combined Deltoid-Spring Ligament Reconstruction in Simulated Advanced Adult Acquired Flatfoot Deformity.

Ashlee MacDonald, David Ciufo, Eric Vess, Emma Knapp, Hani A Awad, John P Ketz, Adolph S Flemister, Irvin Oh,

BACKGROUND:Adult acquired flatfoot deformity (AAFD) is a complex and progressive deformity involving the ligamentous structures of the medial peritalar joints. Recent anatomic studies demonstrated that the spring and deltoid ligaments form a greater medial ligament complex, the tibiocalcaneonavicular ligament (TCNL), which provides medial stability to the talonavicular, subtalar, and tibiotalar ... Read more >>

Foot Ankle Int (Foot & ankle international)
[2020, 41(9):1149-1157]

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Modern Results of Functional Bracing of Humeral Shaft Fractures: A Multicenter Retrospective Analysis.

Rafael Serrano, Hassan R Mir, Henry C Sagi, Daniel S Horwitz, Amrut Borade, John P Ketz, Brian J Kistler, Jonathan H Quade, Michael J Beebe, Brigham K Au, Roy W Sanders, Anjan R Shah,

OBJECTIVES:To evaluate the rate of, and reasons for, conversion of closed treatment of humeral shaft fractures using a fracture brace, to surgical intervention. DESIGN:Multicenter, retrospective analysis. SETTING:Nine Level 1 trauma centers across the United States. PATIENTS:A total of 1182 patients with a closed humeral shaft fracture initially managed nonoperatively with ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2020, 34(4):206-209]

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Alterations in tibiotalar joint reaction force following syndesmotic injury are restored with static syndesmotic fixation.

Meghan Kelly, Daniel Vasconcellos, Walid S Osman, Noorullah Masqoodi, Xavier Fowler, John C Elfar, Mark W Olles, Adolph S Flemister, John P Ketz, Irvin Oh,

<h4>Introduction</h4>Syndesmotic injury alters joint mechanics, which may fail to be restored unless an anatomic reduction is obtained.<h4>Methods</h4>A minimally invasive method of measuring joint forces was utilized that does not require significant dissection or intraarticular placement of sensory instruments. Steinmann pins were placed in the tibia and talus of eight fresh-frozen ... Read more >>

Clin Biomech (Bristol, Avon) (Clinical biomechanics (Bristol, Avon))
[2019, 69:156-163]

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Mortality Rates of Humerus Fractures in the Elderly: Does Surgical Treatment Matter?

Sarah T Lander, Bilal Mahmood, Michael A Maceroli, Jonathan Byrd, John C Elfar, John P Ketz, Lucas E Nikkel,

<h4>Introduction</h4>Multiple studies have shown the impact of hip fractures on geriatric mortality. Few evaluate mortality after proximal humerus (PH) or distal humerus (DH) fractures, and fewer determine differences in mortality based on management. We aim to evaluate a statewide cohort of elderly patients with PH or DH fractures to evaluate ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2019, 33(7):361-365]

Cited: 1 time

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Chondrocyte-Specific RUNX2 Overexpression Accelerates Post-traumatic Osteoarthritis Progression in Adult Mice.

Sarah E Catheline, Donna Hoak, Martin Chang, John P Ketz, Matthew J Hilton, Michael J Zuscik, Jennifer H Jonason,

RUNX2 is a transcription factor critical for chondrocyte maturation and normal endochondral bone formation. It promotes the expression of factors catabolic to the cartilage extracellular matrix and is upregulated in human osteoarthritic cartilage and in murine articular cartilage following joint injury. To date, in vivo studies of RUNX2 overexpression in ... Read more >>

J Bone Miner Res (Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research)
[2019, 34(9):1676-1689]

Cited: 4 times

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A Comparative Analysis of Clinical Outcomes in Noninsertional Versus Insertional Tendinopathy Using PROMIS.

David N Bernstein, Michael R Anderson, Judith F Baumhauer, Irvin Oh, A Samuel Flemister, John P Ketz, Benedict F DiGiovanni,

<i>Background.</i> Achilles tendinopathy is a common clinical disorder. Utilizing the Patient-Reported Outcomes Measurement Information System, we aim to determine clinical response to nonoperative achilles tendinopathy rehabilitative care of insertional achilles tendinopathy compared to non-insertional achilles tendinopathy. <i>Methods.</i> Prospective Patient-Reported Outcomes Measurement Information System Physical Function, Pain Interference, and Depression scores ... Read more >>

Foot Ankle Spec (Foot & ankle specialist)
[2019, 12(4):350-356]

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Spring ligament tear decreases static stability of the ankle joint.

Meghan Kelly, Noorullah Masqoodi, Daniel Vasconcellos, Xavier Fowler, Walid S Osman, John C Elfar, Mark W Olles, John P Ketz, Adolph S Flemister, Irvin Oh,

<h4>Background</h4>Spring ligament tear is often found in advanced adult acquired flatfoot deformity and its reconstruction in conjunction with the deltoid ligament has been proposed to restore the tibiotalar and talonavicular joint stability. The aim of the present study is to determine the effect of spring ligament injury and subsequent reconstruction ... Read more >>

Clin Biomech (Bristol, Avon) (Clinical biomechanics (Bristol, Avon))
[2019, 61:79-83]

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PROMIS Pain Interference Is Superior vs Numeric Pain Rating Scale for Pain Assessment in Foot and Ankle Patients.

David N Bernstein, Meghan Kelly, Jeffrey R Houck, John P Ketz, A Samuel Flemister, Benedict F DiGiovanni, Judith F Baumhauer, Irvin Oh,

<h4>Background:</h4>The Numeric Pain Rating Scale (NPRS) is a popular method to assess pain. Recently, the Patient-Reported Outcomes Measurement Information System (PROMIS) has been suggested to be more accurate in measuring pain. This study aimed to compare NPRS and PROMIS Pain Interference (PI) scores in a population of foot and ankle ... Read more >>

Foot Ankle Int (Foot & ankle international)
[2019, 40(2):139-144]

Cited: 3 times

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Operative Treatment of Talar Head Fractures: Surgical Technique.

Michael R Anderson, Adolph Sam Flemister, John P Ketz,

Talar head fractures represent a rare subtype of injury to the talus. Clinical series of talar head fractures are nonexistent in the current literature, and treatment of these injuries is based on expert opinion. Many authors recommend a single-incision approach to open reduction and internal fixation of talar head fractures; ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2018, 32(8):e334-e338]

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In response.

David J Ciufo, John P Ketz,

J Orthop Trauma (Journal of orthopaedic trauma)
[2018, 32(9):e382-e385]

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Targeting the gut microbiome to treat the osteoarthritis of obesity.

Eric M Schott, Christopher W Farnsworth, Alex Grier, Jacquelyn A Lillis, Sarah Soniwala, Gregory H Dadourian, Richard D Bell, Madison L Doolittle, David A Villani, Hani Awad, John P Ketz, Fadia Kamal, Cheryl Ackert-Bicknell, John M Ashton, Steven R Gill, Robert A Mooney, Michael J Zuscik,

Obesity is a risk factor for osteoarthritis (OA), the greatest cause of disability in the US. The impact of obesity on OA is driven by systemic inflammation, and increased systemic inflammation is now understood to be caused by gut microbiome dysbiosis. Oligofructose, a nondigestible prebiotic fiber, can restore a lean ... Read more >>

JCI Insight (JCI insight)
[2018, 3(8):]

Cited: 16 times

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Determining Success or Failure After Foot and Ankle Surgery Using Patient Acceptable Symptom State (PASS) and Patient Reported Outcome Information System (PROMIS).

Michael R Anderson, Judith F Baumhauer, Benedict F DiGiovanni, Sam Flemister, John P Ketz, Irvin Oh, Jeffrey R Houck,

BACKGROUND:As the role of generic patient-reported outcomes (PROs) expands, important questions remain about their interpretation. In particular, how the Patient Reported Outcome Measurement Instrumentation System (PROMIS) t score values correlate with the patients' perception of success or failure (S/F) of their surgery is unknown. The purposes of this study were ... Read more >>

Foot Ankle Int (Foot & ankle international)
[2018, 39(8):894-902]

Cited: 4 times

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Factors Associated With Revision Surgery After Internal Fixation of Hip Fractures.

Sheila Sprague, Emil H Schemitsch, Marc Swiontkowski, Gregory J Della Rocca, Kyle J Jeray, Susan Liew, Gerard P Slobogean, Sofia Bzovsky, Diane Heels-Ansdell, Qi Zhou, Mohit Bhandari, ,

BACKGROUND:Femoral neck fractures are associated with high rates of revision surgery after management with internal fixation. Using data from the Fixation using Alternative Implants for the Treatment of Hip fractures (FAITH) trial evaluating methods of internal fixation in patients with femoral neck fractures, we investigated associations between baseline and surgical ... Read more >>

J Orthop Trauma (Journal of orthopaedic trauma)
[2018, 32(5):223-230]

Cited: 3 times

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Flexor Hallucis Longus Muscle and Tendon Transfer for the Treatment of Achilles Tendon Wounds.

Michael R Anderson, Derek E Bell, John P Ketz,

Foot Ankle Int (Foot & ankle international)
[2018, 39(2):205-209]

Cited: 1 time

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