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PubMed1993

Muscle study of the musk shrew (Suncus murinus riukiuanus). I. Gluteal and thigh muscles.

The gluteal and thigh muscles of the musk shrew (Suncus murinus riukiuanus) were macroscopically studied. The sartorius was not observed in any of the specimens examined. The gracilis was divided into two bellies. The semitendinosus had two heads of origin, the ischial and vertebral. However, most of the gluteal and thigh muscles of this animal were quite similar with respect to origin, insertion, and also nerve supply to those muscles of rodents and primates, including human beings. All the gluteal and thigh muscles observed in this study were tabulated (see Table 1) and compared with those reported by Sharma (1958) and Isomura (1968). Furthermore, the homology of these muscles to the corresponding muscles of the rodents and of human beings, was discussed in the text (see also Table 1).

Animals↗
PubMed1996

Anterior thigh compartment syndrome following prolonged tourniquet application and lateral positioning.

A case presentation of anterior thigh compartment syndrome following prolonged tourniquet application and lateral decubitus positioning is presented with a review of the literature regarding thigh compartment syndrome. In this case, an 18-year-old man underwent a 12-hour scapular fasciocutaneous-free flap grafting procedure for a non-healed ulcer of the medial heel. Postoperatively, the patient developed anterior thigh compartment syndrome that was delayed in diagnosis because of the epidural analgesics he received for pain control. The patient was returned to the operating room and was successfully treated by an anterior decompression fasciotomy.

Adolescent↗
PubMed2007

Functional outcomes and donor site morbidity following circumferential pharyngoesophageal reconstruction using an anterolateral thigh flap and salivary bypass tube.

BACKGROUND: This study reports our experience with fasciocutaneous reconstruction of circumferential pharyngoesophageal defects using an anterolateral thigh flap wrapped around a salivary bypass tube. METHODS: The charts of 14 patients were reviewed. All patients who had reconstruction of a pharyngoesophageal defect using an anterolateral thigh flap with a salivary bypass tube between 2001 and 2005 were included. RESULTS: There were 10 men and 4 women (mean age, 61 years). There were no fistulae reported, and the stricture rate was 14%. Eleven patients achieved oral diet sufficient to have the gastrostomy or jejunal tube removed. The patients who had tracheoesophageal puncture for voice developed functional speech. There were no flap losses. However, problems with salivary tube migration in the early cases have led to technique refinement. CONCLUSIONS: The low complication rates and the excellent functional outcomes make the anterolateral thigh flap in combination with a salivary bypass tube a viable option for reconstruction of these difficult defects.

Aged↗
PubMed1979

The morphogenesis of the thigh of the mouse with special reference to tetrapod muscle homologies.

In order to provide an ontogenetic basis for the establishment of tetrapod muscle homologies and for the analysis of complex mammalian muscle states, a descriptive analysis of the morphogenesis of the thigh of Mus musculus has been made. The pattern and sequence of muscle cleavage and the migrations of individual muscle primordia are characterized from the eleventh day of gestation, when cleavage begins, through early neonatal stages. Observations on skeletal differentiation and lumbosacral plexus formation are also included. Thigh muscle morphogenesis is compared to that in the lizard, Lacerta, (Romer, '42) and the chick (Romer, '27) and homologies identified. An onogenetic basis for the definition of ancestral and derived muscle states is provided in muscles that are morphologically variable in mammals. These include the gluteus minimus, gracilis, adductor brevis and several hamstring muscles. Certain muscles that show variable innervation patterns in adult mammals, i.e., pectineus, quadratus and adductor magnus, typically develop from premuscle regions that separate muscle anlagen innervated by different nerves. Two muscle anlagen appear in the embryonic mouse thigh and then disappear late in prenatal or early postnatal development. Comparisons with other mammals, especially the marsupial, Marmosa, reveal that these muscles are phylogenetic vestiges that degenerate before maturity. A sartorius vestige is identifiable through the thirteenth day of gestation. A tenuissimus anlage is present until shortly after birth and is clearly innervated by a branch of the peroneal nerve.

Animals↗
PubMed2004

Change of weight-bearing pattern before and after plantar reconstruction with free anterolateral thigh flap.

We reconstructed a large-sized defect at the weight-bearing plantar region by a free anterolateral thigh flap successfully. This is the first case report of using the anterolateral thigh flap for reconstruction of the plantar foot. Based on the preoperative and postoperative pedogram examinations, the pressure distribution on the weight-bearing area reconstructed by the transferred flap was obviously improved and demonstrated a nearly normal pattern. No previous report has compared the weight-bearing pattern before and after large plantar reconstruction with a free flap. The anterolateral thigh free flap, which provides adequate bulk and contour of the foot, and which withstands weight pressure and shearing force and has the ability to provide recovery of sensation, is considered a good alternative in covering a large weight-bearing plantar defect.

Cicatrix↗
PubMed2006

Repair of buccal defects with anterolateral thigh flaps.

The ideal reconstructive method for the buccal mucosa should provide durable, stable coverage and a natural contour, while simultaneously minimizing morbidity of both the defect and donor sites. Since the first report of the anterolateral thigh flap in 1984, it has become one of the most commonly used flaps for the reconstruction of various soft-tissue defects. From March 2004-April 2005, 24 free anterolateral thigh flaps were used to reconstruct buccal defects, including the retromolar trigone and as far as the oral commissure, and in some cases with extension to the neighboring palatal region and tongue. The study comprised 1 female and 23 male patients, with ages ranging from 26-63 years (mean age, 45.8 years). Two flaps required reoperation due to vascular compromise, and both were salvaged with arterial and venous anastomosis revisions, giving an overall success rate of 100%. Primary thinning of the flap was performed in 10 cases. In 2 cases, additional vastus lateralis muscle was included in the flap to fill the large defect. In 2 cases, marginal necrosis with dehiscence of the flap was observed, one of these patients having a history of atherosclerosis and diabetes mellitus (marginal skin necrosis and infection of the donor area were also observed in this patient). In 2 patients, seroma collection was observed in the neck at the dissection site. Chart reviews showed that most patients had a history of betel-nut chewing (95.8%) or a combination of smoking and betel-nut chewing (79.2%). During the follow-up period of 4-12 months, a sufficient level of mouth-opening with interincisal distances of 34 mm, 44 mm, and 48 mm was achieved in all 3 cases reconstructed after release of the trismus. Although it has some variations in the vascular pedicle, irregularity in derivation from the main vessels, and minimal morbidity of the donor site, the anterolateral thigh flap, with its evident functional, structural, and cosmetic advantages, can be considered an excellent and ideal flap option, and a first choice for most buccal defects.

Adult↗
PubMedDate not supplied

Immunogenicity and reactogenicity of HbOC vaccine administered simultaneously with acellular pertussis vaccine (DTaP) into either arms or thighs of infants.

To evaluate the reactogenicity and immunogenicity of a Haemophilus influenzae type b conjugate vaccine (HbOC) and of a tricomponent acellular pertussis vaccine (DTaP) when injected simultaneously into either contralateral arms or into contralateral thighs, 110 infants were enrolled to receive three doses of DTaP at 3, 4, and 5 months and two HbOC doses at 3 and 5 months of age. Administration of either of the two vaccines into arms was associated with significantly more local side effects than administration into thighs. There was no difference in geometric mean concentration (GMC) values for any of the four vaccine antigens between subjects who had been vaccinated into arms or thighs. After immunization, all children had protective antibody titers to diphtheria toxin. While post vaccination the mean anti-tetanus toxoid GMC was > or = 1.25 IU/ml, there was no significant rise as compared to the GMC before vaccination. GMCs of antibodies against the various pertussis antigens were similar to those observed before with the same DTaP vaccine. The simultaneous administration of DTaP and HbOC was safe and immunogenic irrespective of the site of vaccine administration, but significantly more local reactions occurred when vaccines were injected into arms.

Antibodies, Bacterial↗
PubMed2001

Selective thigh muscle atrophy in trans-tibial amputees: an ultrasonographic study.

In trans-tibial amputees, PTB (patellar tendon bearing) prostheses provide almost physiological mobility of the knee joint in the sagittal plane. Nevertheless, there are characteristic adaptations of the knee joint muscles. Myosonography is a suitable method for depicting muscle atrophy and hypertrophy due to muscle dysfunction. The present study was intended to assess anatomical alterations of thigh muscles in trans-tibial amputees wearing a PTB prothesis. Thicknesses and cross-sectional areas of the quadriceps femoris, sartorius, gracilis, semitendinosus and biceps femoris muscles were determined ultrasonographically on both limbs in 17 amputees with a PTB prothesis. The gait was analysed using an optoelectronical system, force plates and surface electromyography of the vastus lateralis and biceps femoris muscles. Quadriceps femoris and sartorius muscles of the amputated extremity exhibited significant atrophy compared with the contralateral limb (reduction of muscle thickness ranged between 11.7% and 30.4%), whereas the gracilis and hamstring muscles were not significantly affected. Even the quadriceps femoris muscle of the non-amputated limb showed a slight atrophy compared with a reference group. Increased echointensities were found predominantly in the quadriceps muscle on the amputated leg. During gait, electromyographical activity within the amputated limb was reduced in the vastus lateralis and increased in the biceps femoris muscle. Even long-term adaptation to PTB prostheses results in characteristic deviation from normal gait. Atrophy occurs in the ventral thigh muscles, predominantly on the amputated leg, whereas the dorsal thigh muscles are hardly affected, probably due to compensatory hyperactivity.

Adolescent↗
PubMed2006

[Anterolateral thigh perforator flaps for facial reconstruction after tumour surgery].

BACKGROUND: Individual flap design and minor donor site morbidity are main criteria in the treatment of facial defects after tumour surgery. Microvascular perforator flaps seem to follow these criteria well. In the following study our experiences with microvascular anterolateral thigh perforator flaps (ALTPF) in reconstruction of the face following ablative tumour surgery are described and discussed in comparison to the present literature. PATIENTS AND METHODS: In 19 patients with squamous cell carcinomas of the floor of the mouth (8), the cheek (6) or the mandible (5) of stadium T3 or T4 ablative tumour surgery followed by reconstruction was performed. For covering the soft tissue defects 19 ALTPF were used. In the five patients with carcinomas of the mandible a microvascular iliac crest transplant was combined with the anterolateral thigh perforator flap for complete chin reconstruction. RESULTS: In one patient an intraoperative dissection of the perforator vessels happened. In all other patients surgery and postoperative period was free of complications. Five patients had minor second surgery for aesthetic of functional reasons. At the end there were good aesthetic and functional results in every patient. CONCLUSIONS: The anterolateral thigh perforator flap is of great advantage in reconstruction of the face after tumour surgery. Individual designing, central and save perfusion, easy to be controlled, and a low incidence of donor site morbidity are their main advantages.

Adult↗
PubMed1995

Influence of weight and frequency on thigh and lower-trunk motion during repetitive lifting employing stoop and squat techniques.

Changes in kinematics as a function of lifting weight and frequency was investigated in sagittal symmetric repetitive lifting. For every lift cycle (lowering and lifting) the motion range between the upright position (0 degrees ) and the maximum angular displacement of the thigh and lower-trunk body segments was recorded. Ten subjects performed five repetitive lifting bouts with different weight/frequency combinations, using both stoop and squat lifting techniques. In total, 6384 lifts were analysed. The lifting weight or frequency did not influence the motion ranges in stoop lifting. In squat lifting the weight lifted did not appear to have any influence on the motion ranges, while the thigh motion range was significantly smaller at lifting frequency of 20 lifts min(-1) than at a frequency of 10. A significant gradual decrease in the thigh motion range and corresponding increase in the lower-trunk motion range were seen for a majority of the subjects during squat lifting at frequency 20. These changes suggest that quadriceps muscle strength is the limiting factor in repetitive squat lifting. Also the variation in motion ranges was greater in squat lifting than in stoop lifting. RELEVANCE: Forestry work involves frequent lifting. However, compliance in using squat lifting technique, which is recommended for safe lifting, is sometimes poor. Fatigue may be one of the determinants for changes in kinematics and choice of technique in lifting tasks.

Journal Article↗
PubMed1997

Incipient compartment syndrome of the thigh following total knee arthroplasty.

Compartment syndrome of the thigh is in itself a rarity because of the large size of the compartment and the relatively high compliance of the thigh which allows accommodation to volume changes due to hematoma or tissue edema. Most cases have been reported in association with impact trauma to the lower extremity or in association with crush syndrome. A previously unrecognized complication of total knee arthroplasty where an incipient compartment syndrome developed in the thigh extensor compartment is reported.

Aged↗
PubMed1998

Combined anterior thigh flaps and vascularised fibular graft for reconstruction of massive composite oromandibular defects.

Six massive, composite oromandibular defects were reconstructed using combined anterior (anterolateral and anteromedial) thigh flaps and vascularised fibular graft in bridge or chimeric fashion. Except for minor dehiscence in one case and infection in another, all flaps survived without complication. Anterior thigh flaps provide large-calibre, long vascular pedicles while derivative branches from the lateral circumflex femoral system facilitate simultaneous transplantation of multiple components. Because the pedicle of the vascularised fibular graft is of insufficient length, the lateral circumflex femoral vessels provide a remote vascular source as a flow-through vascular conduit. A combined flap using the lateral circumflex femoral system is considered to be most suitable for reconstruction of through-and-through defects of the head and neck. The authors describe the advantages of this method and the detailed anatomy of the cutaneous perforators of the anterior thigh flaps.

Adult↗
PubMed2004

An ideal and versatile material for soft-tissue coverage: experiences with most modifications of the anterolateral thigh flap.

Free anterolateral thigh flaps are a popular flap used for the reconstruction of various soft-tissue defects. From April, 2002 to June, 2003, 32 free anterolateral thigh flaps were used to reconstruct soft-tissue defects. Twenty-three of these flaps were used for lower extremity reconstruction, and nine were used for head and neck reconstruction. There were 24 male and eight female patients, with ages between nine and 82 years. The size of the flaps ranged from 11 to 32 cm in length and 6 to 18 cm in width. Five flaps required reoperation for vascular compromise in four patients and for twisting of the pedicle in another patient. While four of these were salvaged, one flap was lost due to recipient vessel problems. Musculocutaneous perforators were found in 23 cases, and septocutaneous perforators were found in nine cases. In four cases, thinning of the flap was performed. The flap was used as a flow-through type for lower extremity reconstruction in three patients. In two patients, the flap was used as a neurosensory type for foot reconstruction. Eighteen cases underwent split-thickness skin grafting of the donor site and, in the remaining cases, the donor sites were closed primarily. In three patients, the donor areas required a partial skin regrafting procedure. No infections or hematomas were observed. Despite some variations in its vascular anatomy, the anterolateral thigh flap offers the following advantages: 1) it has a long and large-caliber vascular pedicle; 2) it has a wide, reliable skin paddle; 3) it may be harvested as a neurosensory flap; 4) it can be harvested whether its pedicle is septocutaneous or musculocutaneous; 5) it can be designed as a flow-through flap; 6) it can be elevated as a thin or musculocutaneous flap; and 7) the procedure can be performed by two teams working simultaneously, and no positional changes are required.

Adolescent↗
PubMed2005

Combined thigh flap for closure of massive trunk defect.

A massive trunk defect resulting from resection of recurrent sarcoma was reconstructed with a combined free flap incorporating medial, anterior, and lateral thigh tissues. This flap included the tensor fasciae latae, lateral thigh perforator, and rectus femoris, all based on the lateral femoral circumflex pedicle. A saphenous vein conduit enabled this flap to replace resected tissues at the lower thorax. Combining the three different commonly used thigh flaps on a single large pedicle enabled transfer of a 47.5 x 33.5-cm mega-flap.

Abdominal Wall↗
PubMed1985

Calculated T1 and T2 MR images and 31P MR spectra in rabbit thigh V2 carcinoma to monitor the effect of steroid administration.

T1 and T2 proton relaxation times in six rabbit thigh V2 carcinomas were obtained from regions of interest on calculated MR images at 2.35 tesla before and after steroid administration. Mean T1 and T2 values of viable tumor tissue decreased after steroid administration, consistent with decreased tissue water content. After steroid withdrawal, T1 and T2 values returned toward baseline. Relaxation times of peritumoral muscle tissue and normal contralateral thigh muscle essentially remained unchanged. In a separate experiment, six rabbit thigh V2 carcinomas were monitored before and after steroids by 31P spectroscopy using a surface coil. No substantial steroid-related changes were recognizable. A fall of the ratio of phosphocreatine to inorganic phosphate and a signal increase from phosphomonoester and phosphodiester compounds were observed during various stages of tumor growth. Analysis of 31P spectra changes and sequential measurements of relaxation times may prove valuable for assessment of tumor growth and therapeutic response in diagnostic oncology.

Animals↗
PubMed2004

Anterior knee pain and thigh muscle strength after intramedullary nailing of tibial shaft fractures: a report of 40 consecutive cases.

OBJECTIVES: Chronic anterior knee pain is a common complication following intramedullary nailing of a tibial shaft fracture. The source of pain is often not known nor is the reason for a simultaneous decrease in thigh muscle strength. Anterior knee pain has also been reported following an anterior cruciate ligament rupture. No previous investigation has assessed whether weakness of the thigh muscles is associated with anterior knee pain following intramedullary nailing of tibial shaft fractures. DESIGN: Prospective study. SETTING: University Hospital of Tampere, University of Tampere. PATIENTS: Fifty consecutive patients with a nailed tibial shaft fracture were initially included in the study. Ten patients did not have isokinetic strength testing for various reasons and were eliminated from the study. MAIN OUTCOME MEASUREMENTS: Isokinetic muscle strength measurements were done in 40 patients at an average 3.2 +/- 0.4 (SD) years after nail insertion (1.7 +/- 0.3 years after the nail extraction). RESULTS: Twelve (30%) patients were painless and 28 (70%) patients had anterior knee pain at follow-up. With reference to the hamstrings muscles, the mean peak torque deficit of the injured limb (as compared with the uninjured limb) was 2 +/- 11% in the painless group and 11 +/- 17% in the pain group at a speed of 60 degrees /s (P = 0.09, [95% CI for the group difference = -18% to 0%]). At a speed of 180 degrees /s, the corresponding deficits were -3 +/- 13% and 10 +/- 21% (P = 0.03, [95% CI for the group difference = -4% to -2%]). With reference to the quadriceps muscles, the mean peak torque deficit of the injured limb was 14 +/- 15% in the painless group and 15 +/- 15% in the pain group at speed of 60 degrees /s (P = 0.71, [95% CI for the group difference = -11% to 10%]). At a speed of 180 degrees /s, the corresponding deficits were 9 +/- 11% and 14 +/- 17% (P = 0.46, [95% CI for the group difference = -14% to 5%]). CONCLUSION: Based on this prospective study, we conclude that anterior knee pain after intramedullary nailing of a tibial shaft fracture, although of multifactorial origin, may be related to deficiency in the flexion strength of the thigh muscles.

Adult↗
PubMed2004

Anterolateral thigh flap technique in hand and upper extremity reconstruction.

The anterolateral thigh flap is an extremely versatile flap first described in 1984. The flap is based on either a septocutaneous or musculocutaneous perforator of the descending branch of the lateral circumflex femoral system. It can be designed as a skin and subcutaneous flap, fasciocutaneous, or musculocutaneous flap. Furthermore, it can be harvested as a sensate flap by taking the lateral cutaneous nerve of the thigh. Technique for harvesting the flap is described in detail. Complications include flap failure and donor site morbidity. Due to its versatility, the anterolateral thigh flap is particularly useful for upper extremity reconstruction.

Journal Article↗
PubMed2005

Hand reconstruction using the thin anterolateral thigh flap.

BACKGROUND: Perforator flaps have been introduced for various kinds of reconstruction and resurfacing; in particular, the free thin anterolateral thigh flap is becoming one of the most preferred options for reconstruction of soft-tissue defects. METHODS: Between 1999 and 2002, the authors used this flap as a free flap for nine cases for covering hand defects after burn, crushing injuries, or severe scar contracture release. There were eight men and one woman, the mean age of the patients was 31 years, and the size of the flaps ranged from 7 x 3.5 cm to 15 x 9 cm; thinning was performed in all flaps. RESULTS: All flaps survived completely, and the donor site was closed directly in seven cases; in two cases, the exposed muscle was covered with split-thickness skin graft. CONCLUSIONS: The anterolateral thigh flap was thin enough for defects on the dorsum and/or palm of the hand and for first web reconstruction after scar contracture release. It has many advantages in free flap surgery including a long pedicle with a suitable vessel diameter, and the donor-site morbidity is acceptable. The thin anterolateral thigh flap is a versatile soft-tissue flap that achieves good hand contour with low donor-site morbidity.

Adult↗