The Experts below are selected from a list of 2310 Experts worldwide ranked by ideXlab platform
Tomohisa Nagasao - One of the best experts on this subject based on the ideXlab platform.
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effective scoring of scapha prevents helix irregularity in Prominent Ear correction a biomechanical study
Journal of Cranio-maxillofacial Surgery, 2014Co-Authors: Tomohisa Nagasao, Junpei Miyamoto, Yusuke Shimizu, Shogo Kasai, Kazuo Kishi, Tsuyoshi KanekoAbstract:Abstract Background As the antihelix is created in the operation for Prominent Ear, the helix often presents irregularities. This biomechanical study aims to elucidate effective techniques to prevent these irregularities. Methods Finite element models were produced simulating 10 Prominent Ears. The scaphas of the 10 models were thinned to simulate scoring or abrasion of the cartilage. The thinning was conducted in four fashions. In the first group, no thinning was conducted ( Non-Scoring Models ); in the second group, the upper half of the scapha was thinned ( Upper-Scoring Models ); in the third group, the lower half of the scapha was thinned ( Lower-Scoring Models ); in the fourth group, the whole scapha was thinned ( Whole-Scoring Models ). Mattress sutures were applied to create the antihelix to simulate Mustarde’s in-suture technique. Thereafter, transformation of the helix’s contour was evaluated. Results Irregularity developed on the upper region of the helix with Non-Scoring and Lower-Scoring Models; the degree of the upper-region’s irregularity was reduced with Upper-Scoring Models and Whole-Scoring Models. Although the edge of the helix moved in the posterior-medial direction with other type models, it moved in the anterior direction with Whole-Scoring Models. Conclusion Irregularity of the upper region of the helix can be prevented by performing scoring or abrasion of the upper part of the scapha. The prominence of the helix and width of the auricle are adjustable by varying the areas of the scapha receiving scoring or abrasion. These findings are useful in improving operative outcomes in the treatment of Prominent Ears.
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Effective scoring of scapha prevents helix irregularity in Prominent Ear correction — A biomechanical study
Journal of Cranio-Maxillofacial Surgery, 2014Co-Authors: Tomohisa Nagasao, Junpei Miyamoto, Yusuke Shimizu, Shogo Kasai, Kazuo Kishi, Tsuyoshi KanekoAbstract:Abstract Background As the antihelix is created in the operation for Prominent Ear, the helix often presents irregularities. This biomechanical study aims to elucidate effective techniques to prevent these irregularities. Methods Finite element models were produced simulating 10 Prominent Ears. The scaphas of the 10 models were thinned to simulate scoring or abrasion of the cartilage. The thinning was conducted in four fashions. In the first group, no thinning was conducted ( Non-Scoring Models ); in the second group, the upper half of the scapha was thinned ( Upper-Scoring Models ); in the third group, the lower half of the scapha was thinned ( Lower-Scoring Models ); in the fourth group, the whole scapha was thinned ( Whole-Scoring Models ). Mattress sutures were applied to create the antihelix to simulate Mustarde’s in-suture technique. Thereafter, transformation of the helix’s contour was evaluated. Results Irregularity developed on the upper region of the helix with Non-Scoring and Lower-Scoring Models; the degree of the upper-region’s irregularity was reduced with Upper-Scoring Models and Whole-Scoring Models. Although the edge of the helix moved in the posterior-medial direction with other type models, it moved in the anterior direction with Whole-Scoring Models. Conclusion Irregularity of the upper region of the helix can be prevented by performing scoring or abrasion of the upper part of the scapha. The prominence of the helix and width of the auricle are adjustable by varying the areas of the scapha receiving scoring or abrasion. These findings are useful in improving operative outcomes in the treatment of Prominent Ears.
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prevention of intra auricular deformity in Prominent Ear correction
2013Co-Authors: Tomohisa NagasaoAbstract:The Mustarde technique effectively reduces the prominence of the Ear and produces an antihelix, but it has two disadvantages. First, the contour of the helix develops irregularity after its application. Second, antihelixes produced with the Mustarde technique tend to present excessively linEar shapes compared with ordinary antihelixes. The first problem can be solved by softening the scapha by scoring or thinning it. The author introduces some troubleshooting methods addressing these disadvantages. In particular, theoretical rationales of the troubleshooting technique for the first problem – reduction of the contour irregularity of the helix – are minutely explained.
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Biomechanical evaluation of surgical correction of Prominent Ear.
Plastic and Reconstructive Surgery, 2009Co-Authors: Junpei Miyamoto, Tomohisa Nagasao, Tamotsu Tamaki, Tatsuo NakajimaAbstract:Background:Mustarde sutures and conchal setback are widely used for surgical correction of Prominent Ear, and numerous cartilage-manipulation techniques accompanying these two methods are also available. However, it is unknown how each technique works biomechanically. The effects of otoplasty were e
Tsuyoshi Kaneko - One of the best experts on this subject based on the ideXlab platform.
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effective scoring of scapha prevents helix irregularity in Prominent Ear correction a biomechanical study
Journal of Cranio-maxillofacial Surgery, 2014Co-Authors: Tomohisa Nagasao, Junpei Miyamoto, Yusuke Shimizu, Shogo Kasai, Kazuo Kishi, Tsuyoshi KanekoAbstract:Abstract Background As the antihelix is created in the operation for Prominent Ear, the helix often presents irregularities. This biomechanical study aims to elucidate effective techniques to prevent these irregularities. Methods Finite element models were produced simulating 10 Prominent Ears. The scaphas of the 10 models were thinned to simulate scoring or abrasion of the cartilage. The thinning was conducted in four fashions. In the first group, no thinning was conducted ( Non-Scoring Models ); in the second group, the upper half of the scapha was thinned ( Upper-Scoring Models ); in the third group, the lower half of the scapha was thinned ( Lower-Scoring Models ); in the fourth group, the whole scapha was thinned ( Whole-Scoring Models ). Mattress sutures were applied to create the antihelix to simulate Mustarde’s in-suture technique. Thereafter, transformation of the helix’s contour was evaluated. Results Irregularity developed on the upper region of the helix with Non-Scoring and Lower-Scoring Models; the degree of the upper-region’s irregularity was reduced with Upper-Scoring Models and Whole-Scoring Models. Although the edge of the helix moved in the posterior-medial direction with other type models, it moved in the anterior direction with Whole-Scoring Models. Conclusion Irregularity of the upper region of the helix can be prevented by performing scoring or abrasion of the upper part of the scapha. The prominence of the helix and width of the auricle are adjustable by varying the areas of the scapha receiving scoring or abrasion. These findings are useful in improving operative outcomes in the treatment of Prominent Ears.
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Effective scoring of scapha prevents helix irregularity in Prominent Ear correction — A biomechanical study
Journal of Cranio-Maxillofacial Surgery, 2014Co-Authors: Tomohisa Nagasao, Junpei Miyamoto, Yusuke Shimizu, Shogo Kasai, Kazuo Kishi, Tsuyoshi KanekoAbstract:Abstract Background As the antihelix is created in the operation for Prominent Ear, the helix often presents irregularities. This biomechanical study aims to elucidate effective techniques to prevent these irregularities. Methods Finite element models were produced simulating 10 Prominent Ears. The scaphas of the 10 models were thinned to simulate scoring or abrasion of the cartilage. The thinning was conducted in four fashions. In the first group, no thinning was conducted ( Non-Scoring Models ); in the second group, the upper half of the scapha was thinned ( Upper-Scoring Models ); in the third group, the lower half of the scapha was thinned ( Lower-Scoring Models ); in the fourth group, the whole scapha was thinned ( Whole-Scoring Models ). Mattress sutures were applied to create the antihelix to simulate Mustarde’s in-suture technique. Thereafter, transformation of the helix’s contour was evaluated. Results Irregularity developed on the upper region of the helix with Non-Scoring and Lower-Scoring Models; the degree of the upper-region’s irregularity was reduced with Upper-Scoring Models and Whole-Scoring Models. Although the edge of the helix moved in the posterior-medial direction with other type models, it moved in the anterior direction with Whole-Scoring Models. Conclusion Irregularity of the upper region of the helix can be prevented by performing scoring or abrasion of the upper part of the scapha. The prominence of the helix and width of the auricle are adjustable by varying the areas of the scapha receiving scoring or abrasion. These findings are useful in improving operative outcomes in the treatment of Prominent Ears.
Junpei Miyamoto - One of the best experts on this subject based on the ideXlab platform.
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effective scoring of scapha prevents helix irregularity in Prominent Ear correction a biomechanical study
Journal of Cranio-maxillofacial Surgery, 2014Co-Authors: Tomohisa Nagasao, Junpei Miyamoto, Yusuke Shimizu, Shogo Kasai, Kazuo Kishi, Tsuyoshi KanekoAbstract:Abstract Background As the antihelix is created in the operation for Prominent Ear, the helix often presents irregularities. This biomechanical study aims to elucidate effective techniques to prevent these irregularities. Methods Finite element models were produced simulating 10 Prominent Ears. The scaphas of the 10 models were thinned to simulate scoring or abrasion of the cartilage. The thinning was conducted in four fashions. In the first group, no thinning was conducted ( Non-Scoring Models ); in the second group, the upper half of the scapha was thinned ( Upper-Scoring Models ); in the third group, the lower half of the scapha was thinned ( Lower-Scoring Models ); in the fourth group, the whole scapha was thinned ( Whole-Scoring Models ). Mattress sutures were applied to create the antihelix to simulate Mustarde’s in-suture technique. Thereafter, transformation of the helix’s contour was evaluated. Results Irregularity developed on the upper region of the helix with Non-Scoring and Lower-Scoring Models; the degree of the upper-region’s irregularity was reduced with Upper-Scoring Models and Whole-Scoring Models. Although the edge of the helix moved in the posterior-medial direction with other type models, it moved in the anterior direction with Whole-Scoring Models. Conclusion Irregularity of the upper region of the helix can be prevented by performing scoring or abrasion of the upper part of the scapha. The prominence of the helix and width of the auricle are adjustable by varying the areas of the scapha receiving scoring or abrasion. These findings are useful in improving operative outcomes in the treatment of Prominent Ears.
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Effective scoring of scapha prevents helix irregularity in Prominent Ear correction — A biomechanical study
Journal of Cranio-Maxillofacial Surgery, 2014Co-Authors: Tomohisa Nagasao, Junpei Miyamoto, Yusuke Shimizu, Shogo Kasai, Kazuo Kishi, Tsuyoshi KanekoAbstract:Abstract Background As the antihelix is created in the operation for Prominent Ear, the helix often presents irregularities. This biomechanical study aims to elucidate effective techniques to prevent these irregularities. Methods Finite element models were produced simulating 10 Prominent Ears. The scaphas of the 10 models were thinned to simulate scoring or abrasion of the cartilage. The thinning was conducted in four fashions. In the first group, no thinning was conducted ( Non-Scoring Models ); in the second group, the upper half of the scapha was thinned ( Upper-Scoring Models ); in the third group, the lower half of the scapha was thinned ( Lower-Scoring Models ); in the fourth group, the whole scapha was thinned ( Whole-Scoring Models ). Mattress sutures were applied to create the antihelix to simulate Mustarde’s in-suture technique. Thereafter, transformation of the helix’s contour was evaluated. Results Irregularity developed on the upper region of the helix with Non-Scoring and Lower-Scoring Models; the degree of the upper-region’s irregularity was reduced with Upper-Scoring Models and Whole-Scoring Models. Although the edge of the helix moved in the posterior-medial direction with other type models, it moved in the anterior direction with Whole-Scoring Models. Conclusion Irregularity of the upper region of the helix can be prevented by performing scoring or abrasion of the upper part of the scapha. The prominence of the helix and width of the auricle are adjustable by varying the areas of the scapha receiving scoring or abrasion. These findings are useful in improving operative outcomes in the treatment of Prominent Ears.
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Biomechanical evaluation of surgical correction of Prominent Ear.
Plastic and Reconstructive Surgery, 2009Co-Authors: Junpei Miyamoto, Tomohisa Nagasao, Tamotsu Tamaki, Tatsuo NakajimaAbstract:Background:Mustarde sutures and conchal setback are widely used for surgical correction of Prominent Ear, and numerous cartilage-manipulation techniques accompanying these two methods are also available. However, it is unknown how each technique works biomechanically. The effects of otoplasty were e
Samuel Stal - One of the best experts on this subject based on the ideXlab platform.
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Treatment of Prominent Ear Anomalies
Advanced Cosmetic Otoplasty, 2013Co-Authors: Amy S. Xue, Edward I. Lee, Shayan A. Izaddoost, Samuel StalAbstract:Two-thirds of the Prominent Ear cases result from an underdeveloped antihelical fold, while one-third of the cases result from an excess of conchal bowl cartilage. Associated secondary anomalies include excessive helical root protrusion, overprojected lobule, excessive antitragal protrusion, insufficient helical curling, cup Ear deformity, and macrotia. The authors discuss the development and anatomy of the Ear, the timing of otoplasty, surgical principles, preferred surgical management, and complications. Thoughtful and logical approach to reconstruction with careful surgical planning will provide consistent, optimized outcomes in form and symmetry.
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treatment of Prominent and constricted Ear anomalies
Plastic and Reconstructive Surgery, 2009Co-Authors: Brian A Janz, Patrick Cole, Larry H Hollier, Samuel StalAbstract:Although the physiologic effects of Ear deformity are negligible, the aesthetic and psychological impact on the patient can be profound. Significant Ear malformations are prevalent in today's society and affect more than 5 percent of the population. Although the Prominent Ear results from either underdevelopment of the antihelix or an enlarged conchal bowl, the constricted Ear is a product of helical down-folding and height deficiency. After a thorough evaluation, surgical management of the Prominent Ear must be approached in a careful, rational fashion. Although the surgeon may enjoy the wide latitude that hundreds of corrective techniques offer, he or she must always proceed with an algorithmic application of technique best suited to the specific auricular deformity. By using this approach, correction of the Prominent Ear can go beyond patient satisfaction to predictably maximize outcome in both form and symmetry. From the clinical evaluation and anatomical basis to surgical management of the deformed Ear, the true art of otoplasty is in the surgeon's ability to thoroughly understand auricular structure and appropriately apply technique for maximal aesthetic outcome.
Orhan Ozturan - One of the best experts on this subject based on the ideXlab platform.
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Dynamometric Analysis of Normative Auricular Stiffness and Comparison With Operated Prominent Ears.
Journal of Craniofacial Surgery, 2015Co-Authors: Orhan Ozturan, Remzi Dogan, Berke Ozucer, Yavuz Selim Yildirim, Aysenur MericAbstract:AIM Stiffness of the auricular cartilage is the main determining factor for the choice of operative technique of the Prominent Ear deformity. The aim of this study is to evaluate the stiffness of normal appEaring Ears objectively and quantitatively, compare the results with the operated Prominent Ear patients, and present prospective short-term dynamometric evaluation of the operated Prominent Ear patients. PATIENTS AND METHODS A total of 190 volunteers without Ear deformities were recruited and 9 age groups were formed: group (5-9), group (10-14), group (15-19), group (20-24), group (25-29), group (30-34), group (35-39), group (40-49), and group (50+). Total 28 Ears (14 patients) with otoplasty were included in the study as group (operated 5-9) and group (operated 10-14). In addition, 3 patients with Prominent Ear deformity were prospectively followed for dynamometric changes that occur with otoplasty operation. The auriculocephalic angle (ACA) was measured once and auricle to scalp distance was measured at 4 different standardized levels. Ear stiffness was measured on each Ear individually at 4 different points over the antihelix using digital computer-aided dynamometry. Each Ear was compared in terms of ACA, distance, and dynamometric values. FINDINGS Dynamometric values tend to increase with age, which increase and peak around 35 yEars of age and declines after 40 yEars of age. Measurements of the first 2 age groups were statistically different compared with the other groups. Postoperative dynamometric measurements (DNM) of group (operated 5-9) were similar with normative values of group (5-9) and postoperative satisfaction visual analogue scale (VAS) score was 92.8%. Postoperative DNM of group (operated 10-14) were higher compared with normative values of group (10-14) for each different measuring level and the postoperative satisfaction VAS score was 75.3. A total of 3 patients with Prominent Ears had lower dynamometric values preoperatively; these values approached closer to normative values of their age group postoperatively. CONCLUSIONS Results show that auricular cartilage stiffens and malleability decreases with increased age. This stiffness peaks in the 35-39 age group and declines after 40 yEars of age. Dynamometric values increase, at all levels, suggesting increased cartilage stiffness is related to age. In the scope of these results, cartilage sparing techniques are more suitable for 5 to 14 yEars of age and cartilage-cutting techniques are more suitable for older patients.
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cartilage sparing techniques versus percutaneous adjustable closed otoplasty for Prominent Ear deformity
Journal of Craniofacial Surgery, 2014Co-Authors: Orhan Ozturan, Remzi Dogan, Sabri Baki Eren, Fadlullah Aksoy, Bayram VeysellerAbstract:OBJECTIVE The goal of this study is to follow longitudinally the Prominent Ears treated by either cartilage-sparing techniques (CSTs) or percutaneous adjustable closed otoplasty (PACO) and compare them as to efficacy, reoccurrence, complications, and patient contentedness. METHODS The CSTs were applied to the first group, that is, 17 patients (32 Ears) with stiff auricular cartilage; whereas PACO was applied to the second group, 15 patients (28 Ears) with soft auricular cartilage. Auriculocephalic distances were recorded at 4 levels preoperatively, at the completion of the surgery, and again postoperatively at the 1st, 3rd, 6th, and 12th months. Patients' satisfaction was assessed using different scales. RESULTS Between the 2 groups, no significant difference was observed in age and satisfaction scales. Mean operating time using PACO was much shorter than using CST. Excluding hematoma, no statistically significant difference in complication rates was observed between the groups. Auriculocephalic distances in both groups were found to have increased comparably up to the 12th month. CONCLUSIONS A comparison of CST and PACO showed that they have comparable rates of efficacy, outcome, reoccurrence, and patient contentedness. For Prominent Ear deformities with soft cartilage, PACO should be preferred because of its advantages of shorter time in surgery, lack of need for lengthy postoperative compressive bandage, comparable efficacy, and letting patients to look at the results right after the operation.
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Percutaneous adjustable closed otoplasty for Prominent Ear deformity.
Journal of Craniofacial Surgery, 2013Co-Authors: Orhan Ozturan, Remzi Dogan, Sabri Baki Eren, Fadlullah Aksoy, Bayram VeysellerAbstract:Objective: The aim of this study is to follow longitudinally the Prominent Ears treated by percutaneous adjustable closed otoplasty (PACO) and evaluate this procedure in terms of technical efficiency, recurrence, complications, and patient satisfaction. Materials and Methods: Percutaneous adjustable closed otoplasty was used to treat 28 Ears in 15 patients presenting with Prominent Ear deformities. To determine the success of each operation, distances between the helical rim and scalp were measured at 4 levels preoperatively, at the end of the surgery and again postoperatively at the first week and the first, third, and sixth months. Patient satisfaction was evaluated using a visual analog scale and Glasgow Benefit Inventories. Results: Favorable outcomes were observed in scales and healthrelated quality-of-life surveys of patient satisfaction. Mean operating time was a mere 19.4 T 5.7 minutes. Complication rates were low. Auriculocephalic distances increased by 7.3%, 11%, 15.3%, and 20%, respectively, compared with the preoperative measurements during the follow-up. Conclusions: Percutaneous adjustable closed otoplasty is an efficient surgical procedure with positive outcome, low recurrence, and high patient satisfaction. In Prominent Ear deformities with soft cartilage, PACO should be the preferred surgical choice because of its advantages of shorter time in surgery, lack of need for prolonged postoperative compressive dressing, and allowing patients to view the results immediately after surgery. In contrast to the previously described techniques, auriculocephalic distances are adjustable while tightening the mattress sutures. Besides, it is a reversible technique, if the surgeon not satisfied with the result of the surgery can either redo the procedure or revert to CST. Percutaneous adjustable closed otoplasty does not cause serious complications, contour deformities, hematoma, or incision scars. For Ear deformities presenting with stiff helical cartilage and conchal hyperthrophy, surgical indications can be extended by scoring and conchal resection, respectively.
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anthropometric growth study of auricle of healthy preterm and term newborns
International Journal of Pediatric Otorhinolaryngology, 2006Co-Authors: Tayyar M Kalcioglu, Orhan Ozturan, Yuksel Toplu, Cengiz YakinciAbstract:Summary Objective Auricular abnormalities are important for Early diagnosis of the birth defects in the prematures and newborns. Auricular antropometric studies in healthy premature and mature population depend on their gestational age are limited and insufficient. The aims of this study were to reveal antropometric growth and dynamics of the auricle in the healthy newborns from the 28th to the 42nd gestation weeks. Materials and methods A total of 600 newborns were evaluated in 40 groups. Each group comprising 20 preterm or term newborns according to their sexes and gestational weeks. Six surface dimensions were performed directly from the right Ears of the subjects: the length from the superaurale to subaurale, the width from the tragus to helix, the width from the tragus to antihelix, the conchal depth, the distance from the helix to mastoid at superaural level and the distance from the helix to mastoid at tragal level. The frequency of the Prominent Ear deformity and lobule attachment were also noted. Results The results of auricular antropometric measurements of healthy preterm and term newborns in different gestational weeks were to determined. No statistical differences of auricular length were found between male and female infants. The incidence of the Prominent Ear deformity and attached lobule was 8.16 and 27.4%, respectively. Conclusions Normal anthropometric features for healthy newborns on the basis of gestational age are very important for the diagnosis of a variety of congenital malformations or syndromes. In this study, antropometric measurements of the auricle in the healthy preterm and term newborns on the basis of gestational age in our region were noted. Similar anthropometric studies in the preterm and term newborns at different geographic and various socioeconomic areas should be performed to constitute normative data in the literature.
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anthropometric growth study of normal human auricle
International Journal of Pediatric Otorhinolaryngology, 2003Co-Authors: Tayyar M Kalcioglu, Cem M Miman, Yuksel Toplu, Cengiz Yakinci, Orhan OzturanAbstract:Objective: The aim of this study was to reveal the anthropometric growth of auricula from birth to the age of 18 yEars and to bring out the dynamics of Ear growth. Material and methods: A total of 1552 children in 50 groups were evaluated. Six surface measurements were performed directly on the right auricle of the subjects: the length from the superaurale to subaurale, the width from the tragus to helix, the width from the tragus to antihelix, the conchal depth, the height from the helix to mastoid at superauraler level, and the height from the helix to mastoid at tragal level. The frequency of Prominent Ear deformity and the degree of attachment of the lobule were also noted. Results: Vertical auricular growth was complete in girls at the age of 11 and in boys at the age of 12, whereas the auricular width from the tragus to helix, the height from the helix to mastoid at superauraler level and the height from the helix to mastoid at tragal level were found almost complete at the age of 6. The auricular width from the tragus to antihelix attained its full size at 6 months for girls and 12 months for boys. The conchal depth was found almost complete at the age of 5 in both sexes. The incidence of Prominent Ear deformity and attached lobule was 9.8 and 26.5%, respectively. Conclusions: Different Ear growth pattern and maturation size from previously published reports are obtained in different populations. There is still need for future studies comparing populations with different social and ethnic background to interpret common knowledge about the size of the Ear. This study gives dimensional information and the growth pattern of the auricle, and therefore may reveal important implications for the adequate timing of the surgical treatment of auricular deformity.
