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    • Robert Michael Kay
    • Robert Michael Kay: Influence Statistics

      Robert Michael Kay

      Robert Michael Kay

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      Children’s Orthopaedic Center, Children’s Hospital Los Angeles, Los Angeles, CA, USA | Children’s Hospital Los Angeles, Los Angeles, CA, USA | Children's Orthopaedic Center, ...

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      Robert Michael Kay:Expert Impact

      Concepts for whichRobert Michael Kayhas direct influence:Cerebral palsy,Gait analysis,Ambulatory children,Knee pain,Hamstring lengthening,Distal radius,Children cerebral palsy,Equinus gait.

      Robert Michael Kay:KOL impact

      Concepts related to the work of other authors for whichfor which Robert Michael Kay has influence:Cerebral palsy,Gait analysis,Closed reduction,Supracondylar fractures,Botulinum toxin,Knee flexion,Spastic diplegia.

      KOL Resume for Robert Michael Kay

      Year
      2022

      Children’s Orthopaedic Center, Children’s Hospital Los Angeles, Los Angeles, CA, USA

      2021

      Keck School of Medicine, University of Southern California, Los Angeles, CA

      Children’s Orthopaedic Center, Children’s Hospital Los Angeles

      2020

      Children's Orthopaedic Center, Children's Hospital Los Angeles, Los Angeles, CA, USA.

      Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA

      Keck School of Medicine, University of Southern California.

      2019

      Keck School of Medicine

      Children's Orthopaedic Center, Children's Hospital Los Angeles, Los Angeles, California, USA.

      2018

      Univeristy of Southern California, Los Angeles, California, United States; Children's Hospital Los Angeles, Los Angeles, California, United States.

      2017

      Children's Orthopaedic Center, Children's Hospital, and Department of Orthopaedic Surgery, Keck School of Medicine of USC, Los Angeles, California, USA

      2016

      Department of Orthopedic Surgery Keck School of Medicine of USC Los Angeles CA USA

      2015

      Children’s Orthopaedic Center, Children’s Hospital Los Angeles, 4650 Sunset Boulevard, M/S 69, Los Angeles, CA 90027.,

      Department of Orthopaedic Surgery, Keck School of Medicine of USC, Los Angeles, CA

      2014

      Department of Orthopaedic Surgery, Children’s Hospital Los Angeles

      2013

      Children's Hospital Los Angeles Children's Orthopaedic Center Los Angeles CA USA

      Department of Orthopaedic Surgery, Keck School of Medicine

      2012

      Keck School of Medicine, University of Southern California, Los Angeles, CA, United States

      2011

      Keck-University of Southern California School of Medicine, Los Angeles, CA

      Childrens Orthopaedic Center, Childrens Hospital Los Angeles, Department of Orthopaedic Surgery, Keck School of Medicine

      2010

      Childrens Orthopaedic Center, Childrens Hospital Los Angeles, 4650 Sunset Boulevard, MS 69, Los Angeles, CA 90027, USA

      Department of Orthopaedics

      2009

      Children's Orthopaedic Center, Children's Hospital Los Angeles Keck-University of Southern California School of Medicine, Los Angeles, CA

      2008

      From the Childrens Orthopaedic Center, Children's Hospital Los Angeles, CA.

      Division of Orthopedic Surgery Childrens Hospital Los Angeles,

      2007

      Department of Orthopaedics, Childrens Hospital Los Angeles, 4650 Sunset Boulevard, Los Angeles, California 90027, USA.

      From the Childrens Orthopaedic Center, Children's Hospital Los Angeles and University of Southern California, Keck School of Medicine, Los Angeles, CA.

      Children's Hospital Los Angeles, 4650 Sunset Boulevard #69, 90027, Los Angeles, CA USA

      2006

      Childrens Hospital, Los Angeles, USA

      From the *Division of Orthopaedic Surgery, Children's Hospital Los Angeles, CA; †College of Physicians and Surgeons, Columbia University; ‡Division of Pediatric Orthopaedics, Children's Hospital of New York, Columbia University College of Physicians and Surgeons; and the §International Center for Health Outcomes and Innovation Research and the Joseph L. Mailman School of Public Health, Columbia University, New York, NY

      Children's Orthopaedic Center, Children's Hospital Los Angeles, 4650 Sunset Boulevard, M/S 69, Los Angeles, CA 90027. E-mail address for S.A. Rethlefsen: srethlefsen@chla.usc.edu

      2005

      From *Department of Orthopaedic Surgery and Rehabilitation, Stritch School of Medicine, Chicago, Illinois; †Loyola University Medical Center, Maywood, Illinois; ‡Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California; and §Children's Orthopedic Center, Children's Hospital, Los Angeles, California.

      Children's Hospital Los Angeles, 4650 Sunset Boulevard, MS 69, Los Angeles, CA 90027. E-mail address for D.L. Skaggs: dskaggs@chla.usc.edu

      Division of Orthopedic Surgery, Childrens Hospital Los Angeles, MS# 69, 4650 Sunset Boulevard, Los Angeles, CA 90027

      2004

      Children's Orthopaedic Center, Children's Hospital Los Angeles, CA 90027, USA.

      Department of Orthopaedics, University of Southern California, Los Angeles, CA, USA

      2003

      Study conducted at Childrens Hospital Los Angeles, Los Angeles, California, U.S.A. From Pediatric Orthopaedics, Childrens Hospital Los Angeles, Los Angeles, California, U.S.A.

      2002

      Study conducted at Children's Hospital Los Angeles, Los Angeles, California, U.S.A. From the Department of Orthopedic Surgery, Children's Hospital Los Angeles, Los Angeles, California, U.S.A.

      Department of Orthopaedic Surgery, Children's Hospital of Los Angeles, University of Southern California School of Medicine, Los Angeles, California, USA

      2001

      Pediatric Orthopaedics, Childrens Hospital Los Angeles, Los Angeles, California, USA

      2000

      Study conducted at Children's Hospital, Los Angeles, California, U.S.A. From Pediatric Orthopaedic Surgery, Children's Hospital Los Angeles, University of Southern California, and *Department of Pediatric Orthopaedic Surgery, LAC and USC Medical Center, Los Angeles, California, U.S.A.

      Childrens Hospital of Los Angeles, University of Southern California School of Medicine, Los Angeles, California, USA; and †University of Washington, Department of Orthopaedics, USA

      From the Department of Orthopaedic Surgery, Children’s Hospital of Los Angeles, Los Angeles, California.

      1999

      Study conducted at Children's Hospital Los Angeles, Los Angeles, California, U.S.A. From Children's Hospital Los Angeles, Motion Analysis Laboratory, Los Angeles, California, U.S.A.

      1998

      Childrens Hospital of Los Angeles, University of Southern California School of Medicine, Los Angeles, California, U.S.A.; and *University of Alabama School of Medicine, Birmingham, Alabama, U.S.A.

      1996

      Department of Orthopaedic Surgery, UCLA Medical Center, Los Angeles, USA

      1995

      Department of Orthopaedic Surgery, UCLA School of Medicine, Los Angeles, California, USA

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      Sample of concepts for which Robert Michael Kay is among the top experts in the world.
      Concept World rank
      zone 3 surgery #1
      crouch patients #1
      static kinematic measures #1
      2081 years experience #1
      consensus general agreement #1
      analysis recommendations #1
      33 statements #1
      procedures p0001 #1
      timing varus #1
      foam 45 #1
      932 134 patients #1
      postoperative frame #1
      ambulation postoperative velocity #1
      largescale multicenter investigations #1
      dysfunction posterior tibialis #1
      level likert #1
      contributing muscle #1
      intraarticular pin placement #1
      silfverskiöld tal #1
      brevis complications #1
      bony surgery #1
      gastrocsoleus ambulatory children #1
      differences intraoperative assessment #1
      extremity casting #1
      mhl fdo #1
      higher postoperative velocity #1
      indications gsl #1
      softtissue procedures #1
      preoperative velocity #1
      ebl notxa #1
      postoperative casts #1
      consensus distal rectus #1
      percutaneous hamstring #1
      function gait analysis #1
      patients suitability treatments #1
      equinus knee hyperextension #1
      articular pin #1
      surgery subsequent surgeries #1
      multicenter investigations epidemiology #1
      static dynamic dorsiflexion #1
      6 133 patients #1
      deformity seventy #1
      panel outcomes #1
      gillette gait #1
      gastrocnemius recession tendoachilles #1
      consensus hamstring surgery #1
      surgery actual surgeries #1
      deformity anterior #1
      short slow hamstrings #1
      Sign-in to see all concepts, it's free!

      Prominent publications by Robert Michael Kay

      KOL-Index: 17221

      BACKGROUND: It has been documented that children insured by Medicaid in California have significantly less access to orthopedic care than children with private insurance. Low Medicaid physician reimbursement rates have been hypothesized to be a major factor. The first objective of this study was to examine whether children insured by Medicaid have limited access to orthopedic care in a national sample. The second objective was to determine if state variations in Medicaid physician ...

      Known for Children Medicaid | Private Insurance | Reimbursement Rates | Study Access | National Sample
      KOL-Index: 16428

      BACKGROUND: The commonly accepted treatment of displaced supracondylar fractures of the humerus in children is fracture reduction and percutaneous pin fixation; however, there is controversy about the optimal placement of the pins. A crossed-pin configuration is believed to be mechanically more stable than lateral pins alone; however, the ulnar nerve can be injured with the use of a medial pin. It has not been proved that the added stability of a medial pin is clinically necessary since, ...

      Known for Lateral Pins | Supracondylar Fractures | Medial Pin | Humerus Children | Operative Treatment
      KOL-Index: 15524

      OBJECTIVE: To compare the availability of timely orthopedic care to a child with a fractured arm insured by Medi-Cal (California state Medicaid) and by private insurance.

      STUDY DESIGN: Fifty randomly chosen offices of orthopedic surgeons were telephoned with the following scenario: "My 10-year-old son broke his arm last week during a vacation" followed by a request for an appointment that week. Each office was called twice with an identical script except for insurance status: once with ...

      Known for Private Insurance | Child Medical | Access Orthopedic | Medicaid Versus | Cal California
      KOL-Index: 15309

      BACKGROUND: Although botulinum toxin A is frequently used to augment serial casting in the treatment of soft-tissue contractures in children with cerebral palsy, its effectiveness for this purpose has not been evaluated. The purpose of the present study was to determine whether botulinum toxin A injection increases the efficacy of serial casting.

      METHODS: A prospective, randomized trial was undertaken to compare serial casting only with serial casting combined with botulinum toxin A ...

      Known for Serial Casting | Botulinum Toxin | Cerebral Palsy | Months Groups | Type Casts
      KOL-Index: 14392

      BACKGROUND: The most commonly cited classification system for lateral condyle fractures (Milch) has not been shown to be predictive of outcome or recommend treatment.

      PURPOSE: To determine whether a classification system and treatment based on fracture displacement and articular congruity correlates with the complication rate after pediatric lateral humeral condyle fractures.

      METHODS: A retrospective review of all children with lateral condyle fractures treated operatively at one ...

      Known for Condyle Fractures | Fracture Displacement | Humeral Lateral | 2 Mm | Complication Rates
      KOL-Index: 14222

      BACKGROUND: There has been controversy regarding the optimal pin configuration in the management of supracondylar humeral fractures in children. A crossed-pin configuration may be mechanically more stable than lateral pins in torsional loading, but it is associated with a risk of iatrogenic injury to the ulnar nerve. Previous clinical studies have suggested that lateral pins provide sufficient fixation of unstable supracondylar fractures. However, these studies were retrospective and ...

      Known for Pin Fixation | Supracondylar Fractures | Loss Reduction | Ulnar Nerve | Humeral Fracture
      KOL-Index: 12656

      OBJECTIVE: Back pain in adults is common and well studied. In contrast, back pain in children has received comparatively little scientific study, despite recent media attention. The purpose of this study is to see what factors influence the prevalence of back pain in middle school children, with particular attention to the weight of children's backpacks and the availability of school lockers.

      METHODS: A population-based sample of 1540 children ages 11-14 years in a large metropolitan ...

      Known for School Children | Weight Backpack | Pain Study | Child Female | Populationbased Sample
      KOL-Index: 12440

      STUDY DESIGN: The perioperative and postoperative complications associated with harvesting posterior iliac crest bone graft in children were reviewed. A retrospective study was performed and a questionnaire interview conducted.

      OBJECTIVES: To determine the morbidity associated with posterior iliac crest bone graft in children.

      SUMMARY OF BACKGROUND DATA: Iliac crest bone is commonly used as a source of bone graft in spine surgery. Although there are multiple reports of complications in ...

      Known for Iliac Crest | Bone Graft | Spine Surgery | 87 Patients | Pain 24
      KOL-Index: 12174

      BACKGROUND: The aim of this study was to examine both the tendon and muscle components of the medial gastrocnemius muscle-tendon unit in children with cerebral palsy (CP) and equinus gait, with or without contracture. We also examined a small number of children who had undergone prior surgical lengthening of the triceps surae to address equinus contracture.

      METHODS: Ultrasound was used to measure Achilles tendon length and muscle-tendon architectural parameters in children of ages 5 to ...

      Known for Equinus Gait | Achilles Tendon | Cerebral Palsy | Medial Gastrocnemius | Neurologic Humans Muscle
      KOL-Index: 11767

      Purpose: Previous studies have established the safety and efficacy of tranexamic acid (TXA) in reducing blood loss after total joint arthroplasty and spinal fusion surgery; however, literature regarding the effectiveness of intraoperative TXA in children with cerebral palsy (CP) is limited. The aim of this study was to investigate the safety and efficacy of intraoperative TXA in reducing blood loss and transfusion requirements for children with CP undergoing a proximal femoral varus ...

      Known for Blood Loss | Tranexamic Acid | Cerebral Palsy | Transfusion Rates | Intraoperative Txa
      KOL-Index: 11387

      BACKGROUND: Ketorolac is commonly used for pain relief perioperatively, but its safety is questioned in children undergoing orthopaedic surgery. The aims of this study are to evaluate the rates of osseous and soft tissue complications after operative pediatric fracture care in children treated with ketorolac, and to compare the rates to those in children treated without ketorolac.

      METHODS: A retrospective review was conducted for 221 consecutive children who underwent operative fracture ...

      Known for Ketorolac Children | Bone Fractures | Delayed Union | Nonsteroidal Child Child | 2 Groups
      KOL-Index: 11057

      Equinus gait is one of the most common abnormalities in children with cerebral palsy. Although it is generally assumed that the calf muscles are abnormally short in equinus gait, no studies have been done to confirm that the muscles are short and that this shortness contributes to the equinus. This study used musculoskeletal modeling combined with computerized gait analysis to examine medial gastrocnemius (MGAS), lateral gastrocnemius (LGAS), and soleus (SOL) musculotendinous lengths ...

      Known for Equinus Gait | Cerebral Palsy | Static Contractures | Calf Muscles | Medial Gastrocnemius
      KOL-Index: 10914

      Background: Traditional recommendations hold that open fractures in both children and adults require urgent surgical débridement for a number of reasons, including the preservation of soft-tissue viability and vascular status as well as the prevention of infection. Following the widespread use of early administration of antibiotics, a number of single-institution studies challenged the belief that urgent surgical débridement decreases the risk of acute infection. Methods: We performed a ...

      Known for Acute Infection | Fractures Children | Hours Injury | Surgical Débridement | Gustilo Anderson
      KOL-Index: 10674

      BACKGROUND: There is an uncommon subset of supracondylar humeral fractures in children that are so unstable they can displace into both flexion and extension. The purposes of this study were to describe this subset of supracondylar fractures and to report a new technique of closed reduction and percutaneous pinning for their treatment.

      METHODS: In a retrospective review of 297 consecutive displaced supracondylar humeral fractures in children treated operatively at our institution, we ...

      Known for Humeral Fractures | Closed Reduction | Unstable Supracondylar | Percutaneous Pinning | Flexion Extension
      KOL-Index: 10532

      BACKGROUND: Progressive crouch gait occurs in patients with cerebral palsy with increasing age. Hamstring lengthening improves crouch in these patients, but hamstring contractures can recur over time. The purpose of this study was to determine whether revision hamstring lengthening is as effective as primary lengthening in improving crouched gait.

      METHODS: Retrospective review was performed for 39 patients with static encephalopathy, average age 10±4 years, who underwent hamstring ...

      Known for Crouch Gait | Hamstring Lengthening | Cerebral Palsy | Knee Flexion | Initial Contact

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      Children’s Orthopaedic Center, Children’s Hospital Los Angeles, Los Angeles, CA, USA | Children’s Hospital Los Angeles, Los Angeles, CA, USA | Children's Orthopaedic Center, Children's Hospital Los Angeles, Los Angeles, CA | Orthopaedic Surgery, Keck

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