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Journal of Plastic, Reconstructive &... Mar 2022In buried suture methods, the levator aponeurosis is fixed to the subcutaneous tissue in the pretarsal region using a suture. However, loosening of the suture occurs...
BACKGROUND
In buried suture methods, the levator aponeurosis is fixed to the subcutaneous tissue in the pretarsal region using a suture. However, loosening of the suture occurs frequently and causes regression or disappearance of the double-eyelid folds. To avoid potential loosening of the suture after surgery, we modified the horizontal suture technique commonly used in buried suture double-eyelid blepharoplasty.
METHODS
In our procedure, the levator aponeurosis was sutured horizontally, and then the subcutaneous tissue in the pretarsal region was sutured vertically by the same suture. After the two ends of the suture were tied, three tissue layers, namely, the levator aponeurosis, pretarsal fascia, and orbicularis oculi muscle, were fixed together in the pretarsal region.
RESULTS
A total of 873 Asian patients underwent double-eyelid blepharoplasty during the past 8 years. No loss of the double-eyelid folds occurred in 563 patients who were followed up for more than six months, and 531 patients, accounting for 94% of the sample, were satisfied with the postoperative results.
CONCLUSION
Since the suture was perpendicular to both the levator aponeurosis and the pretarsal orbicularis oculi muscle, pulling on the suture fixation site during blinking was effectively reduced. As a result, regression or disappearance of the double-eyelid folds due to loosening of the suture along the orientation of the muscle fibers was avoided, and the long-term stability of the double-eyelid folds was ensured.
Topics: Ankle; Blepharoplasty; Eyelids; Humans; Suture Techniques; Sutures
PubMed: 34896040
DOI: 10.1016/j.bjps.2021.11.012 -
Annals of Plastic Surgery Mar 2021
Topics: Aponeurosis; Blepharoptosis; Humans; Muscles
PubMed: 32756255
DOI: 10.1097/SAP.0000000000002497 -
Journal of Biomechanics Apr 2023The plantar aponeurosis functions to support the foot arch during weight bearing. Accurate anatomy and material properties are critical in developing analytical and...
The plantar aponeurosis functions to support the foot arch during weight bearing. Accurate anatomy and material properties are critical in developing analytical and computational models of this tissue. We determined the cross-sectional areas and material properties of four regions of the plantar aponeurosis: the proximal middle and distal middle portions of the tissue and the medial (to the first ray) and lateral (to the fifth ray) regions. Bone-plantar aponeurosis-bone specimens were harvested from fifteen cadaveric feet. Cross-sectional areas were measured using molding, casting, and sectioning methods. Mechanical testing was performed using displacement control triangle waves (0.5, 1, 2, 5, and 10 Hz) loaded to physiologic tension by estimating from body weight and area ratio of the region. Five specimens were tested for each region. Regional deformations were recorded by a high-speed video camera. There were overall differences in cross-sectional areas and biomechanical behavior across regions. The stress-strain responses are non-linear and mainly elastic (energy loss 3.6% to 7.2%). Moduli at the proximal middle and distal middle regions (400 and 522 MPa) were significantly higher than the medial and lateral regions (225 and 242 MPa). The effect of frequency on biomechanical outcomes was small (e.g., 3.5% change in modulus), except for energy loss (107% increase as frequency increased from 0.5 to 10 Hz). These results indicate that the plantar aponeurosis tensile response is non-linear, nearly elastic, and frequency independent. The cross-sectional area and material properties differ by region, and we suggest that such differences be included to accurately model this structure.
Topics: Humans; Aponeurosis; Foot; Weight-Bearing; Bone and Bones; Models, Biological; Biomechanical Phenomena
PubMed: 36924529
DOI: 10.1016/j.jbiomech.2023.111531 -
The Cleft Palate-craniofacial Journal :... Jul 2022Palatoplasty would involve the structures around the pterygoid hamulus. However, clinicians hold different opinions on the optimal approach for the muscles and palatine...
OBJECTIVE
Palatoplasty would involve the structures around the pterygoid hamulus. However, clinicians hold different opinions on the optimal approach for the muscles and palatine aponeurosis around the pterygoid hamulus. The absence of a consensus regarding this point can be attributed to the lack of investigations on the exact anatomy of this region. Therefore, we used micro-computed tomography to examine the anatomical structure of the region surrounding the pterygoid hamulus.
DESIGN
Cadaveric specimens were stained with iodine-potassium iodide and scanned by micro-computed tomography to study the structures of the tissues, particularly the muscle fibers. We imported Digital Imaging and Communications in Medicine images to Mimics to reconstruct a 3-dimensional model and simplified the model.
RESULTS
Three muscles were present around the pterygoid hamulus, namely the palatopharyngeus (PP), superior constrictor (SC), and tensor veli palatini (TVP). The hamulus connects these muscles as a key pivot. The TVP extended to the palatine aponeurosis, which bypassed the pterygoid hamulus, and linked the PP and SC. Some muscle fibers of the SC originated from the hamulus, the aponeurosis of which was wrapped around the hamulus. There was a distinct gap between the pterygoid hamulus and the palatine aponeurosis. This formed a pulley-like structure around the pterygoid hamulus.
CONCLUSIONS
Transection or fracture of the palatine aponeurosis or pterygoid hamulus, respectively, may have detrimental effects on the muscles around the pterygoid hamulus, which play essential roles in the velopharyngeal function and middle ear ventilation. Currently, cleft palate repair has limited treatment options with proven successful outcomes.
Topics: Cleft Palate; Humans; Palatal Muscles; Palate, Soft; Pharyngeal Muscles; Sphenoid Bone; X-Ray Microtomography
PubMed: 34402314
DOI: 10.1177/10556656211036302 -
Indian Journal of Plastic Surgery :... Apr 2021The upper eyelid crease is an indentation at the level where fibers from the levator aponeurosis insert into the skin. Typically, Asian eyes are described as creaseless...
The upper eyelid crease is an indentation at the level where fibers from the levator aponeurosis insert into the skin. Typically, Asian eyes are described as creaseless and puffy and the aim of blepharoplasty is to achieve an eyelid crease, without losing the ethnicity of the individual. We aim to describe the most commonly performed technique as well as the peculiar points to be kept in mind from the Indian perspective.
PubMed: 34239245
DOI: 10.1055/s-0041-1730842 -
Knee Surgery, Sports Traumatology,... May 2021The purpose of the present anatomical study was to define the exact morphology of the posterior fibulotalocalcaneal ligament complex (PFTCLC), both for a better...
PURPOSE
The purpose of the present anatomical study was to define the exact morphology of the posterior fibulotalocalcaneal ligament complex (PFTCLC), both for a better orientation and understanding of the anatomy, especially during hindfoot endoscopy.
METHODS
Twenty-three fresh frozen specimens were dissected in order to clarify the morphology of the PFTCLC.
RESULTS
In all specimens, the ligament originated from the posteromedial border of the lateral malleolus between the posterior tibiofibular ligament (superior border) and the calcaneofibular ligament (CFL), (inferior border). This origin functions as the floor for the peroneal tendon sheath. The origin of the PFTCLC can be subdivided into two parts, a superior and inferior part. The superior part forms an aponeurosis with the superior peroneal retinaculum and the lateral septum of the Achilles tendon. From this structure, two independent laminae can be identified. The inferior part of the origin has no role in the aponeurosis and ligamentous fibres run obliquely to insert in the lateral surface of the calcaneus, in the same orientation as the CFL, but slightly more posterior, which was a consistent finding in all examined specimens. The PFTCLC is maximally tensed with ankle dorsiflexion and is located within the fascia of the deep posterior compartment of the leg.
CONCLUSIONS
The PFTCLC is part of the normal anatomy of the hindfoot and therefore should be routinely recognized and partly released to achieve access to the posterior ankle anatomical pathology, relevant for hindfoot endoscopy. The origin of the ligament complex forms the floor for the peroneal tendon sheath. The superior part of the origin plays a role in the formation of an aponeurosis with the superior peroneal retinaculum and the lateral septum of the Achilles tendon.
Topics: Achilles Tendon; Ankle Joint; Aponeurosis; Cadaver; Fascia; Female; Humans; Lateral Ligament, Ankle; Male; Tarsal Bones
PubMed: 33486559
DOI: 10.1007/s00167-020-06431-5 -
JBJS Reviews Jul 2021Distal biceps tendon (DBT) tears occur most commonly in middle-aged men after a sudden, forced eccentric contraction of the flexed elbow.
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Distal biceps tendon (DBT) tears occur most commonly in middle-aged men after a sudden, forced eccentric contraction of the flexed elbow.
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An understanding of the multiple risk factors, mechanisms, and pathophysiological causes is essential for proper and timely diagnosis.
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High clinical suspicion and routine physical examination with appropriate special examination tests, including the hook test, the passive forearm pronation test, the biceps crease interval test, and the bicipital aponeurosis flex test, can help with rapid and accurate diagnosis and guide appropriate and timely management.
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Treatment for DBT tears depends on the extent (complete versus incomplete) and timing (acute versus chronic) of the injury, and options include nonoperative management, repair, and reconstruction with or without repair of the bicipital aponeurosis.
Topics: Algorithms; Elbow; Elbow Joint; Humans; Male; Middle Aged; Tendon Injuries; Tendons
PubMed: 34260471
DOI: 10.2106/JBJS.RVW.20.00151 -
Ophthalmic Plastic and Reconstructive... 2015To examine the post-aponeurotic space and to confirm and define the presence of a post-aponeurosis fat-pad.
PURPOSE
To examine the post-aponeurotic space and to confirm and define the presence of a post-aponeurosis fat-pad.
METHODS
Experimental anatomic study. Nineteen-orbits from 10 freeze-preserved, unembalmed cadavers of caucasian subjects. In 12 orbits of 7 cadavers, a transconjunctival dissection of the everted upper eyelid was undertaken. Müller's muscle (MM) and conjunctiva were dissected as a composite flap exposing the posterior surface of the aponeurosis (LA) and the commencement of the levator palpebrae superioris (LPS) muscle. Anatomical localisation was agreed by 2 senior surgeons and an anatomist (VM). In the remaining 7 orbits a 1cm central upper eyelid wedge-excision was paraffin-embedded and studied histologically.
RESULTS
Nineteen upper-eyelids from 10 freeze-preserved, unembalmed caucasian cadavers (5-male, 5-female, mean age 80.9; range 67-91 years) were studied. Of 12 eyelids of 7 cadavers, dissected and macroscopically evaluated, a fat-pad was identified in the post-aponeurotic space of all eyelids. Of these, 8 (66%) were predominantly diffuse. The remainder, mixed diffuse-discrete. All 4 of the latter category appeared multi-lobular. The fat-pad was seen to lie predominantly centro-medially, overlying MM, extending superiorly beyond the LA to lie posterior to LPS. Of the 7 upper eyelid wedge-excisions examined microscopically, a fat-pad was identified in all post-aponeurotic spaces, lying between 2 distinct tracts of smooth muscle. The anterior smooth muscle tract was intimately related to the posterior aspect of the LA, in keeping with the posterior smooth muscle layer of the aponeurosis. The posterior smooth muscle tract was in keeping with MM, thicker than the anterior layer, multi-layered and in 6 of 7 eyelids, interspersed with fat.
CONCLUSIONS
We confirm and describe a distinct layer of fat in the post-aponeurotic space, consistently found between MM and the posterior smooth muscle layer of the aponeurosis. We refer to this as the post-aponeurosis fat-pad. These findings provide further anatomical detail for the surgeon undertaking blepharoptosis surgery, who may, in some cases, mistake the presence of fat in this space either for the pre-aponeurotic fat-pad, or for degenerative changes within MM that lies deep to it.
Topics: Adipose Tissue; Aged; Aged, 80 and over; Blepharoptosis; Cadaver; Eyelids; Facial Muscles; Fascia; Female; Humans; Male; Muscle, Smooth; Oculomotor Muscles; Orbit; White People
PubMed: 25575269
DOI: 10.1097/IOP.0000000000000337 -
World Journal of Clinical Cases Oct 2021Desmoid fibroma is a rare soft tissue tumor originating from the aponeurosis, fascia, and muscle, and it is also known as aponeurotic fibroma, invasive fibroma, or...
BACKGROUND
Desmoid fibroma is a rare soft tissue tumor originating from the aponeurosis, fascia, and muscle, and it is also known as aponeurotic fibroma, invasive fibroma, or ligamentous fibroma.
AIM
To investigate the clinical and imaging features of desmoid tumors of the extremities.
METHODS
Thirteen patients with desmoid fibroma of the extremities admitted to our hospital from October 2016 to March 2021 were included. All patients underwent computed tomography (CT), magnetic resonance imaging (MRI), and pathological examination of the lesion. Data on the diameter and distribution of the lesion, the relationship between the lesion morphology and surrounding structures, MRI and CT findings, and pathological features were statistically analyzed.
RESULTS
The lesion diameter ranged from 1.7 to 8.9 cm, with an average of 5.35 ± 2.39 cm. All lesions were located in the deep muscular space, with the left and right forearm each accounting for 23.08% of cases. Among the 13 patients with desmoid fibroma of the extremities, the lesions were "patchy" in 1 case, irregular in 10, and quasi-round in 2. The boundary between the lesion and surrounding soft tissue was blurred in 10 cases, and the focus infiltrated along the tissue space and invaded the adjacent structures. Furthermore, the edge of the lesion showed "beard-like" infiltration in 2 cases; bone resorption and damage were found in 8, and bending of the bone was present in 2; the boundary of the focus was clear in 1. According to the MRI examination, the lesions were larger than 5 cm (61.54%), round or fusiform in shape (84.62%), had an unclear boundary (76.92%), showed uniform signal (69.23%), inhomogeneous enhancement (84.62%), and "root" or "claw" infiltration (69.23%). Neurovascular tract invasion was present in 30.77% of cases. CT examination showed that the desmoid tumors had slightly a lower density (69.23%), higher enhancement (61.54%), and unclear boundary (84.62%); a CT value < 50 Hu was present in 53.85% of lesions, and the enhancement was uneven in 53.85% of cases. Microscopically, fibroblasts and myofibroblasts were arranged in strands and bundles, without obvious atypia but with occasional karyotyping; cells were surrounded by collagen tissue. There were disparities in the proportion of collagen tissue in different regions, with abundant collagen tissue and few tumor cells in some areas, similar to the structure of aponeuroses or ligaments, and tumor cells invading the surrounding tissues.
CONCLUSION
Desmoid tumors of the extremities have certain imaging features on CT and MRI. The two imaging techniques can be combined to improve the diagnostic accuracy, achieve a comprehensive diagnosis of the disease in the clinical practice, and reduce the risk of missed diagnosis or misdiagnosis. In addition, their use can ensure timely diagnosis and treatment.
PubMed: 34734049
DOI: 10.12998/wjcc.v9.i29.8710 -
Orthopaedics & Traumatology, Surgery &... Oct 2014The medial approach to the hip via the adductors, as described by Ludloff or Ferguson, provides restricted visualization and incurs a risk of neurovascular lesion. We...
The medial approach to the hip via the adductors, as described by Ludloff or Ferguson, provides restricted visualization and incurs a risk of neurovascular lesion. We describe a minimally invasive medial hip approach providing broader exposure of extra- and intra-articular elements in a space free of neurovascular structures. With the lower limb in a "frog-leg" position, the skin incision follows the adductor longus for 6cm and then the aponeurosis is incised. A slide plane between all the adductors and the aponeurosis is easily released by blunt dissection, with no interposed neurovascular elements. This gives access to the lesser trochanter, psoas tendon and inferior sides of the femoral neck and head, anterior wall of the acetabulum and labrum. We report a series of 56 cases, with no major complications: this approach allows treatment of iliopsoas muscle lesions and resection or filling of benign tumors of the cervical region and enables intra-articular surgery (arthrolysis, resection of osteophytes or foreign bodies, labral suture).
Topics: Adolescent; Adult; Aged; Female; Hip Joint; Humans; Male; Middle Aged; Minimally Invasive Surgical Procedures; Patient Positioning; Young Adult
PubMed: 25164350
DOI: 10.1016/j.otsr.2014.06.009