Mark R. Villwock

ORCID: 0000-0003-1782-9643
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About
Contact & Profiles
Research Areas
  • Acute Ischemic Stroke Management
  • Cerebrovascular and Carotid Artery Diseases
  • Intracranial Aneurysms: Treatment and Complications
  • Sports injuries and prevention
  • Stroke Rehabilitation and Recovery
  • Meningioma and schwannoma management
  • Tracheal and airway disorders
  • Lower Extremity Biomechanics and Pathologies
  • Foot and Ankle Surgery
  • Head and Neck Cancer Studies
  • Ear Surgery and Otitis Media
  • Knee injuries and reconstruction techniques
  • Venous Thromboembolism Diagnosis and Management
  • Head and Neck Surgical Oncology
  • Orthopedic Surgery and Rehabilitation
  • Pituitary Gland Disorders and Treatments
  • Advanced Chemical Sensor Technologies
  • Dysphagia Assessment and Management
  • Opioid Use Disorder Treatment
  • Voice and Speech Disorders
  • Olfactory and Sensory Function Studies
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Cerebrospinal fluid and hydrocephalus
  • Surgical Simulation and Training
  • Moyamoya disease diagnosis and treatment

University of Kansas
2017-2024

Health and Education Research Management and Epidemiologic Services (United States)
2023

University of Kansas Medical Center
2017-2023

Foothills Medical Centre
2018

Délégation Paris 5
2018

University Hospital and Clinics
2018

Université Paris Cité
2018

The Royal Melbourne Hospital
2017-2018

Inserm
2018

Erasmus MC
2018

Quadriceps and hamstrings weakness occurs frequently after anterior cruciate ligament (ACL) injury reconstruction. Evidence suggests that knee may precipitate hip ankle muscle weakness, but few data support this contention ACL reconstruction.To determine if hip, knee, present rehabilitation for reconstruction.Case-control study.University research laboratory.Fifteen individuals with (8 males, 7 females; age = 20.27 ± 5.38 years, height 1.75 0.10 m, mass 74.39 13.26 kg) 15 control (7 men, 8...

10.4085/1062-6050-48.3.23 article EN Journal of Athletic Training 2013-09-25

Background High rotational traction between football shoes and the playing surface may be a potential mechanism of injury for lower extremity. Hypothesis Rotational at shoe-surface interface depends on shoe design type. Study Design Controlled laboratory study. Methods A mobile testing apparatus with compliant ankle was used to apply rotations measure torque interface. The mechanical surrogate compare 5 cleat patterns (total 10 models) 4 surfaces (FieldTurf, AstroPlay, 2 natural grass...

10.1177/0363546508328108 article EN The American Journal of Sports Medicine 2009-01-23

Context: Quadriceps dysfunction is a common consequence of knee joint injury and disease, yet its causes remain elusive. Objective: To determine the effects pain on quadriceps strength activation to learn if simultaneous effusion affect magnitude dysfunction. Design: Crossover study. Setting: University research laboratory. Patients or Other Participants: Fourteen (8 men, 6 women; age = 23.6 ± 4.8 years, height 170.3 9.16 cm, mass 72.9 11.84 kg) healthy volunteers. Intervention(s): All...

10.4085/1062-6050-48.2.10 article EN Journal of Athletic Training 2013-03-01

Endovascular clot retrieval is a technique available for removing intracranial arterial occlusions in acute ischemic stroke (AIS). This rescue therapy can be performed with moderate conscious sedation (CS) or general anesthesia (GA). The effect of GA on clinical outcome AIS remains controversial. Therefore, we retrospectively investigated whether the use CS during endovascular intervention influenced outcomes.Patients who underwent emergent occlusion years 2006 to 2012 were included this...

10.1097/ana.0000000000000031 article EN Journal of Neurosurgical Anesthesiology 2013-11-28

Background Pituitary tumors comprise 10% to 15% of all diagnosed intracranial tumors; 90% are adenomas. Though benign, significant morbidity via compression surrounding structures or aberrant hormone secretion can occur. This study investigated rates pituitary tumor diagnoses and treatment trends from 1993 2011. Methods was a retrospective review the 2011 Nationwide Inpatient Sample for patients with as well those who underwent resection. Incidences lesions, surgical approaches, clinical...

10.1002/alr.21356 article EN International Forum of Allergy & Rhinology 2014-08-22

Numerous studies on the mechanisms of ankle injury deal with injuries to syndesmosis and anterior ligamentous structures but a previous sectioning study also describes important role posterior talofibular ligament (PTaFL) in ankle's resistance external rotation foot. It was hypothesized that failure level foot would lead PTaFL. Ten ankles were tested by externally rotating until gross injury. Two different frequencies used this study, 0.5 Hz 2 Hz. The mean torque 69.5+/-11.7 Nm angle...

10.1115/1.4002025 article EN Journal of Biomechanical Engineering 2010-08-09

10.1016/j.jstrokecerebrovasdis.2013.09.008 article EN Journal of Stroke and Cerebrovascular Diseases 2014-02-17

Abstract Background While quality of life (QOL), psychosocial health, and adverse treatment outcomes have been studied in head neck cancer (HNC) patients, decision regret is an important understudied complication that can negatively impact future health care making. Methods Data collected using a HNC patient registry with questionnaires administered at initial consultation visits plus 3 6 months after completion was retrospectively analyzed. A visual analog anxiety scale the University...

10.1002/hed.26911 article EN Head & Neck 2021-10-27

The purpose of this study was to investigate the role infill material and fibre structure on rotational traction associated with American football shoes infill-based artificial surfaces. A mobile testing apparatus a compliant ankle used apply rotations measure torque produced at shoe—surface interface. mechanical surrogate compare three materials in combination structures, creating total nine unique Infill material, structure, shoe design were all found significantly affect traction....

10.1243/17543371jset26 article EN Proceedings of the Institution of Mechanical Engineers Part P Journal of Sports Engineering and Technology 2008-11-20

Objective To compare clinical outcome and callus biomechanical properties of a novel angle stable interlocking nail (AS‐ILN) 6 mm bolted standard ILN (ILN6b) in canine tibial fracture model. Study design Experimental vivo study. Animals Purpose‐bred hounds (n = 11). Methods A 5 mid‐diaphyseal ostectomy was stabilized with an AS‐ILN 6) or ILN6b 5). Orthopedic examinations radiographs were performed every other week until union (18 weeks). Paired tibiae tested torsion failure. Callus torsional...

10.1111/j.1532-950x.2014.12136.x article EN Veterinary Surgery 2014-01-27

Quadriceps and hamstrings weakness occurs frequently after anterior cruciate ligament (ACL) injury reconstruction. Evidence suggests that knee may precipitate hip ankle muscle weakness, but few data support this contention ACL

10.4085/1062-6050-48.2.14 article EN Journal of Athletic Training 2013-04-18

Facial reanimation procedures share the same surgical field as a parotidectomy and are most easily accomplished at time of facial nerve sacrifice. Early would also reduce duration paralysis may lead to better functional outcomes.To assess incidence types performed concurrently with total sacrifice using American College Surgeons National Surgical Quality Improvement Project (ACS-NSQIP) database.This cross-sectional study identified 285 patients who underwent (Current Procedural Terminology...

10.1001/jamafacial.2018.1057 article EN JAMA Facial Plastic Surgery 2018-10-17

OBJECT.: There is limited information regarding patient outcomes following interventions for stroke during the window endovascular therapy. Studies have suggested that recently approved stent retrievers are safer and more effective than earlier-generation thrombectomy devices. The authors compared cases in which Solitaire-FR device was used to those a MERCI or Penumbra used.This study single-center retrospective review of 102 consecutive acute patients were treated with mechanical devices...

10.3171/2014.2.jns131372 article EN Journal of neurosurgery 2014-03-07

Objectives/Hypothesis The goals of pituitary tumor resection include normalizing endocrine function, relieving mass effect, and minimizing risk recurrence. This study investigated current trends in costs complications for transfrontal transsphenoidal surgery. Study Design Retrospective review the 2008–2011 Nationwide Inpatient Sample patients undergoing lesion resection. Methods Demographics outcomes were compared between surgical approaches using χ 2 tests. Multivariate analysis was...

10.1002/lary.25120 article EN The Laryngoscope 2015-01-13

Informed consent is an integral part of pre-operative counseling. However, information discussed can be variable. Recent studies have explored the use multimedia in providing informed for rhinologic surgery.

10.1177/1945892421992659 article EN American Journal of Rhinology and Allergy 2021-02-02

Abstract Background Lymph node yield (LNY) is a proposed quality indicator in neck dissection for oral cavity squamous cell carcinoma (OCSCC). Methods Retrospective series including 190 patients with OCSCC undergoing between 2016 and 2018. A change pathologic grossing protocol was initiated during the study period to assess residual adipose tissue. generalized linear model used impact of multiple variables on LNY. Results Mean LNY 28.59 (SD = 17.65). The identified mean 10.32 lymph nodes per...

10.1002/hed.26343 article EN Head & Neck 2020-06-24

Objectives To describe the impact of resident involvement in tympanoplasty on operative time and surgical complication rates. Study Design Case series with chart review. Setting Tertiary medical center. Subjects Methods Current Procedural Terminology codes were used to identify patients 2011-2014 public use files American College Surgeons National Surgical Quality Improvement Program who underwent a or tympanomastoidectomy. Cases included if database indicated whether operating room was...

10.1177/0194599817737270 article EN Otolaryngology 2017-10-17

Background and purpose Mechanical thrombectomy (MT) for the treatment of acute ischemic stroke has been growing in popularity while therapeutic benefit MT increasingly debated. Our objective was to examine national trends mortality following MT. Methods We analyzed National Inpatient Sample (2012) Nationwide (2008–2011) patients with a primary diagnosis that received Temporal were examined using Spearman's rank correlation. To account confounding factors, further binary logistic regression....

10.1136/neurintsurg-2015-011674 article EN Journal of NeuroInterventional Surgery 2015-03-23

Many physicians debate the efficacy of mechanical thrombectomy for ischaemic stroke, but most agree that to establish potential benefit, patient selection must be examined further. People >80 years are a growing population patients with stroke largely excluded from clinical trials. The benefit them may greatly reduced due diminishing neuroplasticity and larger number medical comorbidities. To address this knowledge gap, we economic outcomes after in Nationwide Inpatient Sample. Our null...

10.1136/bmjopen-2013-004480 article EN cc-by-nc BMJ Open 2014-03-01
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