Hyphenated History

Mehlman, Charles T.; Koepplinger, Matthew E.

doi:10.1097/01.bpb.0000279029.82021.d3

Cited by 33 publications

(37 citation statements)

References 4 publications

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“…The 2 main techniques of interest in this study were tendon transfers to the posterior aspect of the humerus at the level of the triceps, as originally described by Sever and L'Episcopo vs. transfer to the rotator cuff as described by Hoffer 4,6 . The subscapularis muscle was released during the tendon transfer surgery among 600 patients, while the pectoralis muscle was released in 651 patients.…”

Section: Resultsmentioning

confidence: 99%

Section: Surgical Techniquesmentioning

confidence: 99%

“…Contracture release and tendon transfer surgery has been the standard of care for the surgical management of OBPP because it was first publicized by Sever and L'Episcopo in the early 20th century 4 . L'Episcopo originally described transferring the tendons of the teres major (TM) and latissimus dorsi (LD) to the lateral head of the triceps in the posterior humerus, converting them to external rotators 5 .…”

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confidence: 99%

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Tendon Transfers to Restore Shoulder Function for Obstetrical Brachial Plexus Palsy

et al. 2023

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Background: Obstetrical brachial plexus palsy (OBPP) is a relatively common stretch injury of the brachial plexus sustained during delivery. Tendon transfers are commonly performed to improve shoulder function among patients with OBPP. Although several techniques for the surgical management of OBPP exist, it is unclear whether tendon transfers to the rotator cuff vs. posterior humerus yield different outcomes.Methods: A systematic search in PubMed, Web of Science, the Cumulative Index to Nursing and Allied Health Literature, the Cochrane Library, and Google Scholar up to January 1, 2021, was performed. Relevant publications were classified by surgical technique of tendon transfers to the rotator cuff or posterior humerus. The standard mean difference (SMD) and 95% confidence intervals were calculated to compare preoperative and postoperative aggregate Mallet scores as well as abduction and external rotation scores using the Mallet scale. A p value of ,0.01 was considered significant.Results: Data from 26 studies and 951 patients (46.2% male patients) with a mean age of 68.9 6 29.3 months were included. Eight hundred three patients underwent tendon transfer to the rotator cuff and 148 to the posterior humerus. The average postoperative follow-up period was 45.2 6 21.7 months. The pooled cohort had an overall improvement in postoperative aggregate Mallet scores (SMD 5 5.53, p , 0.001), abduction scores (SMD 5 1.79, p , 0.001), and external rotation scores (SMD 5 1.99, p , 0.001). Tendon transfer to the rotator cuff had a greater postoperative improvement in abduction (SMD 5 1.90, p , 0.001) than transfer to the posterior humerus (SMD 5 1.32, p , 0.001) while both techniques yielded similar improvements in external rotation (rotator cuff SMD 5 2.01, p , 0.001, posterior humerus SMD 5 1.98, p , 0.001).Conclusion: This is the first systematic review comparing outcomes for tendon transfers to the rotator cuff vs. the posterior humerus for improving shoulder function in patients with OBPP. Overall, tendon transfers are an effective treatment for improving shoulder function. Transfer of the latissimus dorsi and teres major to the rotator cuff compared with transfer to the posterior humerus results in greater improvement in abduction while both techniques have similar results in improving external rotation. Level ofEvidence: Level I Systematic review of Level I and Level II studies Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJSREV/A889).

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Section: Resultsmentioning

confidence: 99%

Section: Surgical Techniquesmentioning

confidence: 99%

mentioning

confidence: 99%

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Tendon Transfers to Restore Shoulder Function for Obstetrical Brachial Plexus Palsy

et al. 2023

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“…The formation of lateral spine curvature observed in AIS is associated with alterations in the stress profiles across vertebral epiphyseal growth plates, which has been shown to alter local growth rates [ 3 ]. The Hueter-Volkmann law, the guiding principle of growth modulation in AIS spine, states that growth is stimulated in relative tension and inhibited in relative compression [ 4 ]. This law was validated across multiple species and anatomical locations, and has been shown to produce predictable alterations in bone growth when a known loading regimen is applied [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Patient-specific finite element modeling of scoliotic curve progression using region-specific stress-modulated vertebral growth

2023

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Purpose This study describes the creation of patient-specific (PS) osteo-ligamentous finite element (FE) models of the spine, ribcage, and pelvis, simulation of up to three years of region-specific, stress-modulated growth, and validation of simulated curve progression with patient clinical angle measurements. Research Question: Does the inclusion of region-specific, stress-modulated vertebral growth, in addition to scaling based on age, weight, skeletal maturity, and spine flexibility allow for clinically accurate scoliotic curve progression prediction in patient-specific FE models of the spine, ribcage, and pelvis? Methods Frontal, lateral, and lateral bending X-Rays of five AIS patients were obtained for approximately three-year timespans. PS-FE models were generated by morphing a normative template FE model with landmark points obtained from patient X-rays at the initial X-ray timepoint. Vertebral growth behavior and response to stress, as well as model material properties were made patient-specific based on several prognostic factors. Spine curvature angles from the PS–FE models were compared to the corresponding X-ray measurements. Results Average FE model errors were 6.3 ± 4.6°, 12.2 ± 6.6°, 8.9 ± 7.7°, and 5.3 ± 3.4° for thoracic Cobb, lumbar Cobb, kyphosis, and lordosis angles, respectively. Average error in prediction of vertebral wedging at the apex and adjacent levels was 3.2 ± 2.2°. Vertebral column stress ranged from 0.11 MPa in tension to 0.79 MPa in compression. Conclusion Integration of region-specific stress-modulated growth, as well as adjustment of growth and material properties based on patient-specific data yielded clinically useful prediction accuracy while maintaining physiological stress magnitudes. This framework can be further developed for PS surgical simulation.

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“…Vertebral growth modulation is based on the Hueter–Volkmann Law [ 2 ], according to which the application of compressive forces causes the slowing of physeal bone growth, and opposite distraction forces increase bone growth. These forces can be applied to the scoliotic spine with the aim of restoring normal vertebral morphology [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Fusionless All-Pedicle Screws for Posterior Deformity Correction in AIS Immature Patients Permit the Restoration of Normal Vertebral Morphology and Removal of the Instrumentation Once Bone Maturity Is Reached

Burgos

Mariscal

Antón-Rodrigálvarez

et al. 2023

JCM

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The aim of this study was to report the restoration of normal vertebral morphology and the absence of curve progression after the removal of instrumentation in AIS patients that underwent posterior correction of the deformity by a common all-screws construct without fusion. A series of 36 AIS immature patients (Risser 3 or less) were included in the study. Instrumentation was removed once the maturity stage was complete (Risser 5). The curve correction was assessed pre- and postoperatively, before instrumentation removal, directly post-removal, and more than two years after instrumentation was removed. Epiphyseal vertebral growth modulation was assessed by the coronal wedging ratio (WR) at the apical level of the main curve (MC). The mean preoperative coronal Cobb was corrected from 53.7° ± 7.5 to 5.5° ± 7.5° (89.7%) at the immediate postop. After implant removal (31.0 ± 5.8 months), the MC was 13.1°. T5–T12 kyphosis showed significant improvement from 19.0° before curve correction to 27.1° after implant removal (p < 0.05). Before surgery, the WR was 0.71 ± 0.06, and after removal, 0.98 ± 0.08 (p < 0.001). At the end of the follow-up, the mean sagittal range of motion (ROM) of the T12-S1 segment was 51.2 ± 21.0°. The SRS-22 scores improved from 3.31 ± 0.25 preoperatively to 3.68 ± 0.25 at the final assessment (p < 0.001). In conclusion, a fusionless posterior approach using common all-pedicle screws correctly constructed satisfactory scoliotic main curves and permitted the removal of instrumentation once bone maturity was reached. The final correction was highly satisfactory, and an acceptable ROM of the previously lower instrumented segments was observed.

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Hyphenated History

Cited by 33 publications

References 4 publications

Tendon Transfers to Restore Shoulder Function for Obstetrical Brachial Plexus Palsy

Tendon Transfers to Restore Shoulder Function for Obstetrical Brachial Plexus Palsy

Patient-specific finite element modeling of scoliotic curve progression using region-specific stress-modulated vertebral growth

Fusionless All-Pedicle Screws for Posterior Deformity Correction in AIS Immature Patients Permit the Restoration of Normal Vertebral Morphology and Removal of the Instrumentation Once Bone Maturity Is Reached

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