KOL | Susan A RethlefsenChildren's Orthopaedic Center, Children's Hospital Los Angeles Keck School of Medicine, University of Southern California, Los Angeles, CA. | Children’s Orthopaedic Center, ... |
KOL Resume for Susan A Rethlefsen
| Year | |
|---|---|
| 2022 | Children's Orthopaedic Center, Children's Hospital Los Angeles Keck School of Medicine, University of Southern California, Los Angeles, CA. |
| 2021 | Children’s Orthopaedic Center, Children’s Hospital Los Angeles |
| 2020 | Children’s Hospital Los Angeles, Los Angeles, CA, USA From the Department of Orthopaedic Surgery, Harbor-UCLA Medical Center, Torrance, CA (Dr. Lullo); Keck School of Medicine, University of Southern California (Dr. Nazareth, Dr. Illingworth, Dr. Abousamra, and Dr. Kay); the Children's Hospital of Los Angeles (Ms. Rethlefsen, Dr. Abousamra, and Dr. Kay); and the Children's Orthopaedic Center, Children's Hospital Los Angeles (Dr. Illingworth), Los Angeles, CA. Children's Orthopaedic Center, Children's Hospital Los Angeles, Los Angeles, California. |
| 2019 | Children’s Orthopaedic Center, Children’s Hospital Los Angeles, Los Angeles, CA |
| 2018 | Children's Hospital Los Angeles, Los Angeles, California, United States. |
| 2017 | Children's Orthopaedic Center, Children's Hospital, Los Angeles, California, USA |
| 2016 | Children's Orthopedic Center Children's Hospital Los Angeles CA USA |
| 2015 | Children’s Orthopaedic Center, Children’s Hospital Los Angeles, 4650 Sunset Boulevard, M/S 69, Los Angeles, CA 90027. Children's Orthopaedic Center (Drs Wren and Rethlefsen, and Ms Mueske, Dennis, and Healy), Children's Hospital Los Angeles, Los Angeles, California; Department of Radiology (Dr Wren), Children's Hospital Los Angeles, Los Angeles, California; Department of Biomedical Engineering (Dr Wren), University of Southern California, Los Angeles, California; Orthopliance Group (Mr Dryden), North Hollywood, California; Division of Pediatric Rehabilitation Medicine (Ms Dennis and Healy, and Dr Rethlefsen), Children's Hospital Los Angeles, Los Angeles, California. |
| 2013 | Children's Hospital Los Angeles Children's Orthopaedic Center Los Angeles CA USA |
| 2012 | Children's Orthopaedic Center, Children's Hospital Los Angeles, Los Angeles, CA, United States |
| 2011 | Childrens Orthopaedic Center, Childrens Hospital Los Angeles |
| 2010 | Childrens Orthopaedic Center, Childrens Hospital Los Angeles, 4650 Sunset Boulevard, MS 69, Los Angeles, CA 90027, USA Children's Orthopaedic Center |
| 2008 | Division of Orthopedic Surgery Childrens Hospital Los Angeles |
| 2006 | Childrens Orthopaedic Center, Childrens 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. |
| 2004 | Children's Orthopaedic Center, Children's Hospital Los Angeles |
| 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 Childrens Hospital Los Angeles, Los Angeles, California, U.S.A. |
| 2001 | Pediatric Orthopaedics, Childrens Hospital Los Angeles, Los Angeles, California, USA |
| 2000 | Study conducted at Children's Hospital Los Angeles, Los Angeles, California, U.S.A. From Orthopaedic Surgery, Childrens Hospital Los Angeles, Los Angeles, CA. |
| 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. Motion Analysis Laboratory, Childrens Hospital Los Angeles 90027, USA. |
Susan A Rethlefsen: Influence Statistics
| Concept | World rank |
|---|---|
| computerized motion analysis | #1 |
| computerized motion | #1 |
| preoperative gait analysis | #1 |
| excision improves | #1 |
| gastrocnemius recession tendoachilles | #2 |
| outcome calf spasticity | #2 |
| improves kinetic | #2 |
| tertius brevis | #2 |
| adfh treatment | #2 |
| preoperative velocity | #2 |
| gait analysis outcomes | #2 |
| adr ankle | #2 |
| recurrent crouch gait | #2 |
| postoperative gait analysis | #2 |
| posterior tibialis muscles | #2 |
| feet varus | #2 |
| static dynamic dorsiflexion | #2 |
| outcome gastrocnemius | #2 |
| postoperative knee pain | #2 |
| muscular contributor | #2 |
| multicenter investigations epidemiology | #2 |
| adr afos | #2 |
| intoeing | #2 |
| procedures ambulation | #2 |
| silfverskiöld test tal | #2 |
| summary gait analysis | #2 |
| gait contributing | #2 |
| adrafos knee extension | #2 |
| dysfunction posterior | #2 |
| higher postoperative velocity | #2 |
| staples plateandscrew constructs | #2 |
| walking activity braces | #2 |
| muscles timing | #2 |
| patients pes varus | #2 |
| knee extension pushoff | #2 |
| p0001 additional surgeries | #2 |
| surgery nga | #2 |
| varus patients | #2 |
| assessment calf spasticity | #2 |
| tibialis dysfunction | #2 |
| tibialis varus | #2 |
| muscular contributors varus | #2 |
Open the FULL List in Excel | |
Prominent publications by Susan A Rethlefsen
Botulinum toxin as an adjunct to serial casting treatment in children with cerebral palsy.
[ PUBLICATION ]
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 |
Achilles Tendon Length and Medial Gastrocnemius Architecture in Children With Cerebral Palsy and Equinus Gait
[ PUBLICATION ]
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 |
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 |
Surgical Management of Hip Subluxation and Dislocation in Children With Cerebral Palsy
[ PUBLICATION ]
BACKGROUND: Controversy exists regarding surgical treatment of hip subluxation/dislocation in children with cerebral palsy (CP). The purpose of this study was to compare isolated varus derotational osteotomy (VDRO) and VDRO combined with open hip reduction and/or pelvic osteotomy in children with CP and hip subluxation/dislocation.
METHODS: Retrospective review was performed of 75 patients with CP (116 hips) and hip subluxation/dislocation treated surgically, with a minimum of 2 years ...
| Known for Cerebral Palsy | Hip Subluxation | Surgical Management | Pelvic Osteotomy | Study Vdro |
Effect of High-frequency, Low-magnitude Vibration on Bone and Muscle in Children With Cerebral Palsy
[ PUBLICATION ]
BACKGROUND: Children with cerebral palsy (CP) have decreased strength, low bone mass, and an increased propensity to fracture. High-frequency, low-magnitude vibration might provide a noninvasive, nonpharmacologic, home-based treatment for these musculoskeletal deficits. The purpose of this study was to examine the effects of this intervention on bone and muscle in children with CP.
METHODS: Thirty-one children with CP ages 6 to 12 years (mean 9.4, SD 1.4) stood on a vibrating platform ...
| Known for Cerebral Palsy | Bone Muscle | 6 Months | Treatment Children | Magnitude Vibration |
BACKGROUND: Knee pain in cerebral palsy (CP) is associated with increased patellofemoral forces present when walking with flexed knees. In typically developing children, knee pain and patellofemoral dysfunction are associated with obesity, genu valgum, femoral anteversion, and external tibial torsion. These problems are also common in CP, and may contribute to knee problems in this population. The purposes of this study were to define the prevalence of knee pain and patellofemoral ...
| Known for Knee Pain | Cerebral Palsy | Femoral Anteversion | External Tibial Torsion | Retrospective Studies |
The authors retrospectively reviewed a series of 492 consecutive cerebral palsy patients undergoing computerized motion analysis. The prevalence of 14 specific gait abnormalities was evaluated and compared based on involvement (hemiplegia, diplegia, or quadriplegia), age, and history of previous surgery (lower extremity orthopaedic surgery or rhizotomy). Stiff knee in swing, equinus, and intoeing were all seen in more than 50% of the subjects in each of the hemiplegic, diplegic, and ...
| Known for Cerebral Palsy | Previous Surgery | Specific Gait Abnormalities | Stiff Knee | Ambulatory Children |
AIM: To examine the impact of age, surgery, and Gross Motor Function Classification System (GMFCS) level on the prevalence of gait problems in children with cerebral palsy (CP).
METHOD: Gait analysis records were retrospectively reviewed for ambulatory patients with CP. Gait abnormalities were identified using physical exam and kinematic data. Relationships among age, sex, previous surgery, GMFCS level, and prevalence of gait abnormalities associated with crouch and out-toeing, and ...
| Known for Gait Abnormalities | Cerebral Palsy | Gmfcs Level | Gross Motor | Physical Exam |
BACKGROUND: Intoeing is a frequent gait problem in children with cerebral palsy. It is essential to determine the cause(s) of intoeing when surgical intervention is being planned. The purpose of this study was to evaluate the prevalence of various causes of intoeing in children with cerebral palsy and to determine whether the causes differ between children with bilateral and those with unilateral involvement.
METHODS: The cause of intoeing gait was examined retrospectively, with use of ...
| Known for Cerebral Palsy | Intoeing Gait | Internal Hip Rotation | Tibial Torsion | Disorders Neurologic |
Cross-correlation as a method for comparing dynamic electromyography signals during gait
[ PUBLICATION ]
Current clinical interpretation of dynamic electromyography (EMG) data is usually based on qualitative assessments of muscle timing. Cross-correlation may provide a method for objectively comparing the timing and shape of EMG signals. This study used cross-correlation to compare EMG signals from different walking trials, different test sessions, and different individuals in able-bodied adults. Cross-correlation results (R-values) for different walking trials within a single test session ...
| Known for Cross Correlation | Emg Signals | Skeletal Signal Processing | Muscle Activation | Rectus Femoris |
AIM: The aim of this study was to determine if gait analysis improves correction of excessive hip internal rotation in ambulatory children with spastic cerebral palsy (CP).
METHOD: Children undergoing orthopedic surgery were randomized to receive or not receive a preoperative gait analysis report. This secondary analysis included all participants whose gait report recommended external femoral derotation osteotomy (FDRO). One-year postoperative, and pre- to postoperative change in femoral ...
| Known for Gait Analysis | Ambulatory Children | Cerebral Palsy | Hip Rotation | Randomized Controlled Trial |
Hip rotation during gait has traditionally been measured using thigh wand markers. Hip rotation data calculated using thigh wands shows large variability between different laboratories and underestimates the rotation movement. This study investigated effectiveness of a patella marker in tracking hip rotation range of motion in comparison with traditional thigh wands. In controlled trials of isolated hip internal-external rotation, the patella marker detected 98+/-8% of the actual range ...
| Known for Patella Marker | Hip Rotation | Thigh Wands | Range Motion | Clinical Gait Analysis |
Long-term Ambulatory Change After Lower Extremity Orthopaedic Surgery in Children With Cerebral Palsy
[ PUBLICATION ]
BACKGROUND: Long-term studies of lower extremity orthopaedic surgery in children with cerebral palsy (CP) tend to focus on gait kinematics and kinetics, with little to no emphasis on gross motor ambulatory function. The current study was undertaken to examine the long-term impact of surgery on ambulatory function in patients with CP enrolled in a government-funded, outpatient therapy program.
METHODS: Retrospective medical record review was conducted of 127 children with CP, Gross Motor ...
| Known for Cerebral Palsy | Gmfcs Levels | Lower Extremity | Surgery Children | Motor Function |
Changes in Pelvic Rotation After Soft Tissue and Bony Surgery in Ambulatory Children With Cerebral Palsy
[ PUBLICATION ]
The authors performed a retrospective review of pelvic rotation in 59 children with cerebral palsy who underwent lower extremity surgery and pre- and postoperative gait analysis. Two groups were studied: a femoral derotation osteotomy (FDRO) group and a soft tissue surgery only (no FDRO) group. Both groups exhibited abnormal pelvic rotation preoperatively and normalization of this abnormal pelvic rotation postoperatively. Though the mean change in pelvic rotation was small (3.3 degrees ...
| Known for Pelvic Rotation | Cerebral Palsy | Soft Tissue | Ambulatory Children | Retrospective Review |
The Effects of Fixed and Articulated Ankle-Foot Orthoses on Gait Patterns in Subjects with Cerebral Palsy
[ PUBLICATION ]
Twenty-one subjects with spastic diplegic cerebral palsy were studied to quantify the effects of fixed and articulated ankle-foot orthoses (AFOs) on gait and delineate criteria for their use. Children underwent gait analysis under three conditions, fixed AFOs (FAFOs), articulated AFOs (AAFOs), and shoes alone. Greater dorsiflexion occurred at initial contact with both FAFOs and AAFOs than shoes alone. Dorsiflexion at terminal stance was greatest in AAFOs. Plantarflexor power generation ...
| Known for Cerebral Palsy | Gait Patterns | Foot Orthoses | Articulated Ankle | Calf Spasticity |
Key People For Cerebral Palsy
Susan A Rethlefsen:Expert Impact
Concepts for whichSusan A Rethlefsenhas direct influence:Cerebral palsy, Gait analysis, Knee pain, Spina bifida, Hamstring lengthening, Gmfcs levels, Children cerebral palsy, Serial casting.
Susan A Rethlefsen:KOL impact
Concepts related to the work of other authors for whichfor which Susan A Rethlefsen has influence:Cerebral palsy, Gait analysis, Botulinum toxin, Knee flexion, Hamstring lengthening, Spastic diplegia, Ambulatory children.
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