Growth and Remodelling of the Ribs in Normal and Scoliotic Pigs

Snellman, O

doi:10.3109/ort.1973.44.suppl-149.01

Cited by 13 publications

(8 citation statements)

References 35 publications

(42 reference statements)

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“…This is in agreement with a study on pigs, where growth at the posterior end corresponded to 25% of the growth at the anterior end (SNELLMAN, 1973). The adjustment of the bone sensitivity factor fix was based on the range of values 0.4-1.2MPa -1 reported by STOKES (2002) from experiments on growth plates in different anatomical sites and animal species.…”

Section: Growth and Growth Modulation Parameters"supporting

confidence: 76%

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Biomechanical modelling of growth modulation following rib shortening or lengthening in adolescent idiopathic scoliosis

Carrier

Aubin

Villemure

2004

Med. Biol. Eng. Comput.

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A biomechanical model was developed to evaluate the long-term correction resulting from rib shortening or lengthening in adolescent idiopathic scoliosis (AIS). A finite element model of the trunk, personalised to the geometry of a scoliotic patient, was used to simulate rib surgery. Stress relaxation of ligaments following surgery was integrated into the model, as well as longitudinal growth of vertebral bodies and ribs and its modulation due to mechanical stresses. Simulations were performed in an iterative fashion over 24 months. A concave side rib shortening, inducing load patterns on the vertebral end-plates that could act against the scoliosis progression, was tested. A fractional factorial experimental design of 16 runs documented the effects of six modelling parameters. Wedging of the apical vertebra in the frontal plane decreased from 5.2 degrees initially to a mean value of 3.8 degrees after 24 months. The wedging decrease in the thoracic apical region was reflected by changes in the spine curvature, with a Cobb angle decrease from 46 degrees to 44 degrees immediately after the surgery and to a mean of 41 degrees after 24 months. However, both rib hump and vertebral axial rotation increased, on average, by 4 degrees at the curve apex. The most significant parameters were the growth sensitivity to stress in ribs and vertebrae and the rate of stress relaxation of intercostal ligaments. The results confirmed the potential of long-term correction of spinal curvature resulting from the rib shortening on the concavity. This modelling approach could be used for further design of less invasive surgery, taking into account residual growth, for scoliosis correction.

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Section: Growth and Growth Modulation Parameters"supporting

confidence: 76%

“…Their implementation in the model will improve its ability to predict the long-term correction resulting from surgery. Furthermore, alteration of the rib cage shape results from rib growth in length, but also from modelling of the cross-sectional growth (SNELLMAN, 1973). Bone modelling was not represented in the model.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical modelling of growth modulation following rib shortening or lengthening in adolescent idiopathic scoliosis

Carrier

Aubin

Villemure

2004

Med. Biol. Eng. Comput.

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“…There are two major reason for this. First, Snellman 17 reported that 75 percent of longitudinal rib growth occurs from the costochondral junction (to avoid suppressing growth, the region of costochondral junction is preserved). Second, if the costal cartilage is excised at the costochondral junction, the risk of hematoma formation caused by bleeding from the bone increases and must be avoided.…”

Section: Chest Wall Deformitymentioning

confidence: 99%

A New Method of Costal Cartilage Harvest for Total Auricular Reconstruction: Part I. Avoidance and Prevention of Intraoperative and Postoperative Complications and Problems

Kawanabe¹,

Nagata²

2006

Plastic and Reconstructive Surgery

111

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“…Several authors also emphasize the need to preserve the growth plates during surgery [4,6,7]. Experimental data also suggest that longitudinal growth of a normal rib occurs mainly at the sternal end [8].…”

mentioning

confidence: 96%

How not to do it: restrictive thoracic dystrophy after pectus excavatum repair

Robicsek

Fokin

2004

Interactive Cardiovascular and Thoracic Surgery

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The purpose of our paper is to call attention to acquired restrictive thoracic dystrophy (ARTD), an iatrogenic disease. The condition may occur following correction of pectus excavatum in young patients and is characterized by a reduced and restricted rib cage, usually with some recurrence of the deformity. The authors personal experience with five such patients includes analysis of their operative notes, radiographs, and long-term follow up. These, as well as literary, data indicate that the cause of ARTD is not that the operation is performed at an early age, but that inappropriate surgical technique was performed that may include radical chondrocostal resection, extirpation of growth centers, and suturing together of the perichondrial strips retrosternally, consequentially causing cartilaginous growth behind the sternum. A well-designed, conservative operation may be safely performed at any age, including in children less than 4 years old.

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Growth and Remodelling of the Ribs in Normal and Scoliotic Pigs

Cited by 13 publications

References 35 publications

Biomechanical modelling of growth modulation following rib shortening or lengthening in adolescent idiopathic scoliosis

Biomechanical modelling of growth modulation following rib shortening or lengthening in adolescent idiopathic scoliosis

A New Method of Costal Cartilage Harvest for Total Auricular Reconstruction: Part I. Avoidance and Prevention of Intraoperative and Postoperative Complications and Problems

How not to do it: restrictive thoracic dystrophy after pectus excavatum repair

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