Abstract:
BACKGROUND:Evans showed that lengthening the lateral column by inserting structural bone graft into the anterior calcaneus could correct abduction and valgus deformity in flatfoot. To better understand the mechanism of correction and the three-dimensional effect of this procedure a cadaver study was done. METHODS:Three cadaver flatfoot models were used. Computed tomographic (CT) scans were made of each specimen before and after lengthening. Data from these scans were used to determine the center of volume of the talus, navicular, cuboid, and calcaneus. The angular and translational motions for each bone were determined. RESULTS:On average, relative to the talus, the navicular moved 18.6 degrees of rotation in adduction, 2.6 degrees of rotation in pronation, and 3.4 degrees in plantarflexion. The average translation was 5.6 mm medial, 0.4 mm posterior, and 1.8 mm plantar. The cuboid moved an average of 24.2 degrees of rotation in adduction and lengthening, 13.9 degrees in pronation, and 1.9 degrees in plantarflexion. The average translation was 9.4 mm medial, 2.6 mm distal, and 1.5 mm plantar. The calcaneus moved an average of 4.4 degrees of rotation in adduction, 0.1 degrees of rotation in eversion, and 1.3 degrees of plantarflexion. The average translation was 3 mm medial and 0.7 mm posterior with no plantar translation. CONCLUSIONS:The mechanism of Evans calcaneal lengthening involves adduction and plantarflexion of the midfoot relative to the hindfoot. The cuboid and navicular appear to move as a unit. The shape of the talar head, axis of the subtalar joint, degree of initial deformity, competence of plantar soft tissues, such as the long plantar ligament, and adequate length of the Achilles tendon are important. Knowing what qualitative three-dimensional changes take place allows a better understanding of the mechanics of the procedure and its possible applications.
journal_name
Foot Ankle Intjournal_title
Foot & ankle internationalauthors
Dumontier TA,Falicov A,Mosca V,Sangeorzan Bdoi
10.1177/107110070502600209keywords:
subject
Has Abstractpub_date
2005-02-01 00:00:00pages
166-70issue
2eissn
1071-1007issn
1944-7876pii
877203journal_volume
26pub_type
杂志文章abstract:BACKGROUND:Fixed equinovarus deformities can be challenging to treat especially in medically debilitated patients. The purpose of this study was to evaluate Achilles lengthening with posterior tibial tenotomy and immediate weightbearing in this difficult group of patients. MATERIALS AND METHODS:Thirteen extremities in...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.3113/FAI.2008.0325
更新日期:2008-03-01 00:00:00
abstract:BACKGROUND:The fibula is commonly used for bone grafts. Previous clinical and biomechanical studies have suggested that the length of the residual portion of the distal part of the fibula has an important effect on the long-term stability of the ankle joint. However, we cannot find clear-cut guidelines for the amount o...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070602700306
更新日期:2006-03-01 00:00:00
abstract:BACKGROUND:The Krackow locking loop technique has been used for Achilles tendon repair with documented success in allowing early range of motion with stable fixation. Previous studies documented failure at the rupture site by knot failure. We propose a modification of the traditional Krackow technique where the knots o...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.3113/FAI-2009-0410
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND:Although early accelerated rehabilitation is recommended for the treatment of acute Achilles tendon rupture, most traditional rehabilitation techniques require some type of brace. METHODS:We retrospectively analyzed 44 feet of 44 patients (25 male and 19 female) with a mean age of 31.8 years who had an acut...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/1071100716673589
更新日期:2017-02-01 00:00:00
abstract::Solitary calcaneal bone cysts are uncommon. Usually they measure 1/3 to 1/2 of the calcaneal length. Symptomatic calcaneal bone cysts are generally treated with open debridement and autologous bone grafting. We report a case of a patient with a displaced intra-articular calcaneal fracture who presents with a large ben...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070102200610
更新日期:2001-06-01 00:00:00
abstract:BACKGROUND:Proximal chevron osteotomy with a distal soft tissue procedure has been widely used to treat moderate to severe hallux valgus deformities. However, there have been no studies comparing the results of proximal chevron osteotomy between patients with moderate and severe hallux valgus. We compared the results o...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.3113/FAI.2012.0637
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND:The incidence of non union following a first tarsometatarsal arthrodesis (Lapidus procedure) has decreased significantly with modern techniques of minimal bone resection, meticulous bone surface preparation and rigid internal fixation. We evaluated whether a postoperative wedge shoe would increase our non-un...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.3113/FAI.2009.0746
更新日期:2009-08-01 00:00:00
abstract::Twenty-three biopsies from patients with the typical symptoms of intermetatarsal neuroma (so-called Morton's metatarsalgia) were compared histologically and semi-quantitatively with 25 plantar nerves from the intermetatarsal space III/IV gained at autopsies from cases where no problems in the forefoot had been recorde...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070002100705
更新日期:2000-07-01 00:00:00
abstract:BACKGROUND:Ongoing controversy exists on postoperative weightbearing status after open reduction and internal fixation of an ankle fracture. This prospective randomized controlled trial aimed to compare patient-based and physician-based outcomes after early weightbearing at 2 vs 6 weeks postoperatively. METHODS:Fifty ...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/1071100720908853
更新日期:2020-06-01 00:00:00
abstract:BACKGROUND:Research into gait characteristics has led to the creation of experimental gait simulators. The aim of this work was the development of a Contact Gait Simulation System (CGSS) to generate realistic plantar pressures for the contact phase of gait. The simulator seeks to create muscle loads which guide the foo...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.3113/FAI.2008.0066
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:The treatment of osteochondral lesion of the talus (OLT) is mainly based upon the stage of the disease so accurate imaging is crucial. SPECT/CT combines bone scan with high-resolution CT and can provide functional-anatomical images in a single stage. The purpose of this study was to assess the value of SPECT...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.3113/FAI.2011.0233
更新日期:2011-03-01 00:00:00
abstract:BACKGROUND:The flexor to extensor transfer of the flexor digitorum longus (FDL) tendon has been a relatively common operative procedure for the treatment of a flexible hammer toe deformity and chronic metatarsophalangeal (MTP) joint dislocation. A possible complication of using the tunnel technique rather than the tend...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/1071100714565927
更新日期:2015-05-01 00:00:00
abstract::The purpose of this ex vivo biomechanical study was to determine the strength and stiffness of the anterior and posterior syndesmotic tibiofibular ligaments and the posterior tibiotalar component of the deltoid ligament. Injuries to these ligaments are a prevalent clinical problem, yet little is known about their mech...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070302400509
更新日期:2003-05-01 00:00:00
abstract::The strain changes of the central part of the anterior talofibular ligament (ATFL), the posterior talofibular ligament (PTFL), the calcaneofibular ligament (CFL), and the tibiocalcaneal ligament (TCL) were measured simultaneously for a full range of ankle motion. Twelve fresh frozen amputated ankles were used. To meas...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070202300909
更新日期:2002-09-01 00:00:00
abstract::Between 1984 and 1994, 40 patients with a posttraumatic compartment syndrome of the lower leg and foot were treated for talipes equinovarus adductus foot deformity, which subsequently developed. Twenty patients had a wedge osteotomy followed by arthrodesis of the midtarsal joint (Chopart joint). Another 17 patients ha...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110079601700607
更新日期:1996-06-01 00:00:00
abstract::A custom, patellar-tendon bearing (PTB), patten-bottom, caliper suspension orthosis was constructed for six patients with severe, active (Eichenholtz stage I) Charcot arthropathy of the ankle and hindfoot. With the orthosis, the suspended foot and ankle remained completely non-weight-bearing, and the lower extremity s...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070202300408
更新日期:2002-04-01 00:00:00
abstract::Contemporary methods of bone grafting osteochondral defects, in which the remaining overlying cartilage is relatively well preserved, have inherent problems. The bony defects are often saucer-shaped and the cylindrical graft may not fill the void, leaving areas of cartilage with no underlying scaffold and obviating ea...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.3113/FAI.2008.0616
更新日期:2008-06-01 00:00:00
abstract:BACKGROUND:We investigated a previously reported technique for the repair of acute Achilles tendon ruptures using the percutaneous Achillon suture system (Intega Life Sciences Corporation, Plainsboro, NJ). METHODS:Twenty-five patients with Achilles tendon ruptures were studied prospectively with a minimum of 12 months...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070602700204
更新日期:2006-02-01 00:00:00
abstract:BACKGROUND:The purpose of this study was to evaluate the clinical and radiological results in a group of patients who underwent first metatarsophalangeal joint arthrodesis with an endomedullary screw fixation technique (MPA-E). METHODS:Between 2003 and 2009, 101 metatarsophalangeal arthrodesis were performed in 76 pat...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/1071100713483113
更新日期:2013-08-01 00:00:00
abstract:BACKGROUND:Weight-bearing radiographs are a critical component of evaluating foot and ankle pathology. An underlying assumption is that patients are placing 50% of their body weight on the affected foot during image acquisition. The accuracy of weight bearing during radiographs is unknown and, presumably, variable, whi...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/1071100717695361
更新日期:2017-06-01 00:00:00
abstract::The subtalar, talonavicular, and calcaneocuboid joints were internally fixed to simulate triple arthrodesis was performed on eight matched pairs of human cadaver feet. Feet were randomly assigned such that one specimen in each pair was internally fixed with cobalt-chrome staples and one specimen with stainless steel s...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110079601701209
更新日期:1996-12-01 00:00:00
abstract::The OssaTron may be another alternative for management of plantar fasciitis (heel pain syndrome) after failure of non-operative management and prior to surgical management. This study evaluated primarily the safety and early preliminary efficacy of the OssaTron in treatment of patients with plantar fasciitis unrespons...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070202300302
更新日期:2002-03-01 00:00:00
abstract:BACKGROUND:Periprosthetic osteolysis in total ankle arthroplasty (TAA) is a substantial problem. We report the incidence and characteristics of periprosthetic osteolysis and its association with clinical outcomes after TAA using the HINTEGRA ankle system. METHODS:Between May 2004 and April 2010, 126 primary TAA were p...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/1071100713509247
更新日期:2014-01-01 00:00:00
abstract::We evaluated retrospectively the long-term results of isolated calcaneal fractures treated with open reduction and internal fixation and a primary subtalar arthrodesis. From 1990 to 1997 258 patients were treated with a calcaneal fracture, for the current study six patients were included. Six different surgeons operat...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070102200102
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:Repeated elevation of intramuscular pressure (IMP) causes skeletal-muscles damage. The purpose of this paper was to investigate the regenerative effect of satellite cells autografted to the damaged muscle in a rabbit model. MATERIALS AND METHODS:Twenty-four adult rabbits were randomized into three groups: 1...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.3113/FAI.2010.0706
更新日期:2010-08-01 00:00:00
abstract:BACKGROUND:The presence of metatarsus adductus can complicate hallux valgus surgery. It reduces the gap between the first and second metatarsal and can restrict the transposition of the first metatarsal head. It also confounds the measurement of the first second intermetatarsal angle. MATERIALS AND METHODS:Twenty-seve...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.3113/FAI.2010.0220
更新日期:2010-03-01 00:00:00
abstract::Two commonly used techniques for tibiotalar fusion were quantitatively compared using instrumented testing of the strength of the construct. The tibiae and tali from 10 pairs of fresh-frozen cadaveric limbs were used. One joint of each pair was fused using two 6.5-mm crossed cancellous screws from proximal to distal w...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110079401500604
更新日期:1994-06-01 00:00:00
abstract:BACKGROUND:Tibiotalocalcaneal (TTC) arthrodesis is a proven solution for severe hindfoot arthropathy that reestablishes stability for plantigrade gait and alleviates pain, while correcting deformity. Intramedullary nailing is an effective option for fixation. The aim of this study was to determine clinical outcome, ana...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/1071100714565900
更新日期:2015-05-01 00:00:00
abstract:BACKGROUND:Retrospective assessment of preoperative status is common in nonprospective study designs. The aim of this study was to test the hypothesis that prospective and retrospective evaluations of the preoperative patient condition in hallux surgery gives equal results and therefore can be used interchangeably. ME...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070502601211
更新日期:2005-12-01 00:00:00
abstract:BACKGROUND:The proximal crescentic osteotomy is an effective technique for correcting a widened 1-2 intermetatarsal angle associated with moderate to severe hallux valgus deformities. However, postoperative dorsal malunion at the osteotomy site from loss of fixation has been reported. The purpose of this study was to e...
journal_title:Foot & ankle international
pub_type: 杂志文章
doi:10.1177/107110070502600505
更新日期:2005-05-01 00:00:00