scholarly journals Treatment for Flexible Flatfoot in Children With Subtalar Arthroereisis and Soft Tissue Procedures

2021 ◽  
Vol 9 ◽  
Author(s):  
Bing Li ◽  
Wenbao He ◽  
Guangrong Yu ◽  
Haichao Zhou ◽  
Jiang Xia ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Achilles Tendon ◽  
Level Of Evidence ◽  
First Metatarsal ◽  
Spring Ligament ◽  
Therapeutic Outcomes ◽  
Flexible Flatfoot ◽  
Subtalar Arthroereisis ◽  
Gastrocnemius Recession ◽  
The Mean

Background: Children with flexible flatfoot is common in clinics and there is no unified conclusion on surgical treatment. And for some patients with severe deformities, the correction of the subtalar joint arthroereisis combine the release of the Achilles tendon or gastrocnemius muscle release is still not satisfactory. The main aim of the present study was to investigate the therapeutic outcomes of subtalar arthroereisis combined with Achilles tendon or gastrocnemius recession and medial soft tissue (spring ligament, talonavicular joint capsule, tibionavicular ligaments and tibiospring ligaments) tightening for treating flexible flatfoot with severe deformities.Methods: Thirty patients (32 feet) with pediatric flexible flatfoot who underwent subtalar arthroereisis and soft tissue procedures during January 2016 to January 2018. There were 18 males (20 feet) and 12 females (12 feet) with an average age of 9.5 years (range, 8–12 years). We used the AOFAS scores and VAS scores combined with angles measure to evaluate the pre-operative and post-operative status.Results: Thirty patients (32 feet) were followed up for 25.3 months on average (range, 18–36 months). There was no infection. Post-operative foot pain, arch collapse, and other symptoms improved. At last follow-up, the Meary angle was decreased from 17.5° ± 4.4° to 4.1° ± 1.2° (P < 0.05), the talar-first metatarsal (AP) was decreased from 15.3° ± 3.1° to 4.8° ± 1.3°(P < 0.05), The mean AOFAS score was rose from 66.6 ± 5.8 to 88.6 ± 7.9 (P < 0.05), the mean VAS score was decreased from 6.6 ± 0.6 to 1.7 ± 0.3 (P < 0.05).Conclusion: The subtalar arthroereisis combined with soft tissue procedures can effectively correct flexible flatfoot in children and it is a significant method for severe forefoot abduction reconstruction.Level of Evidence: IV

Endoscopy-Assisted Achilles Tendon Reconstruction With a Central Turndown Flap and Semitendinosus Augmentation

2016 ◽  
Vol 37 (12) ◽  
pp. 1333-1342 ◽  
Author(s):  
Prashant N. Gedam ◽  
Faizaan M. Rushnaiwala
Keyword(s):  
Minimally Invasive ◽  
Achilles Tendon ◽  
Achilles Tendon Rupture ◽  
Wound Complication ◽  
Reconstruction Technique ◽  
Level Of Evidence ◽  
Invasive Approach ◽  
Perioperative Morbidity ◽  
The Mean

Background: The objective of this study was to report the results of a new minimally invasive Achilles reconstruction technique and to assess the perioperative morbidity, medium- to long-term outcomes, and functional results. Methods: Our series was comprised 14 patients (11 men and 3 women), with a mean age of 45.6 years at surgery. Each patient had a chronic Achilles tendon rupture. The mean interval from rupture to surgery was 5.5 months (range, 2-10). The mean total follow-up was 30.1 months (range, 12-78). All patients were operated with a central turndown flap augmented with free semitendinosus tendon graft and percutaneous sutures in a minimally invasive approach assisted by endoscopy. The patients underwent retrospective assessment by clinical examination, the American Orthopaedic Foot & Ankle Society (AOFAS) ankle and hindfoot score, and the Achilles Tendon Total Rupture Score (ATRS). Paired t tests were used to assess the preoperative and postoperative AOFAS scores, ATRS scores, and ankle range of motion. Results: The length of the defect ranged from 3 to 8 cm (mean, 5.1), while the length of the turndown flap ranged from 8 to 13 cm (mean, 10.1). The mean AOFAS score improved from 64.5 points preoperatively to 96.9 points at last follow-up. The mean ATRS score improved from 49.4 preoperatively to 91.4 points at last follow-up. None of the patients developed a wound complication. No patient had a rerupture or sural nerve damage. Conclusion: All patients in our study had a favorable outcome with no complications. We believe that with this triple-repair technique, one can achieve a strong and robust repair such as in open surgery while at the same time reducing the incidence of complications. Level of Evidence: Level III, retrospective comparative study.

scholarly journals Tarsometatarsal bone remodelling after subtalar arthroereisis

2020 ◽  
Vol 14 (3) ◽  
pp. 221-229
Author(s):  
Matthias Braito ◽  
Maria Radlwimmer ◽  
Dietmar Dammerer ◽  
Philipp Hofer-Picout ◽  
Jürgen Wansch ◽  
...  
Keyword(s):  
Bone Remodelling ◽  
Deformity Correction ◽  
Lateral View ◽  
Bone Morphology ◽  
Level Of Evidence ◽  
First Metatarsal ◽  
Metatarsal Angle ◽  
Medial Cuneiform ◽  
Angular Measurements ◽  
Subtalar Arthroereisis

Purpose Subtalar arthroereisis has been described for the treatment of flexible juvenile flatfoot. However, the mechanism responsible for deformity correction has not yet been investigated adequately. The aim of this study was to document the effect of subtalar arthroereisis on the tarsometatarsal bone morphology. Methods We retrospectively reviewed the clinical and radiological data of 26 patients (45 feet) with juvenile flexible flatfoot deformity treated by subtalar arthroereisis at our department between 2000 and 2018. Radiological evaluation included angular measurements of tarsometatarsal bone morphology as well as hindfoot and midfoot alignment. Mean radiographic follow-up was 19.4 months (sd 8.8; 12 to 41). Results A significant change of angular measurements of tarsometatarsal bone morphology was found after subtalar arthroereisis (p < 0.001). While there was an increase of the distal medial cuneiform angle (DMCA) and the medial cuneo-first metatarsal angle on the anteroposterior view, a decrease of the naviculo-medial cuneiform angle and the medial cuneo-first metatarsal angle was seen on the lateral view. Furthermore, we found significant improvements of all hindfoot and midfoot alignment parameters except the lateral tibio-calcaneal angle and the calcaneal pitch angle (p < 0.001). Conclusion Our data support the theory of tarsometatarsal bone remodelling, which may contribute to the effect of subtalar arthroereisis for the treatment of flexible juvenile flatfoot. Level of evidence IV

scholarly journals Effect on Foot Width With Triplanar Tarsometatarsal Arthrodesis for Hallux Valgus

2020 ◽  
Vol 5 (3) ◽  
pp. 247301142093480
Author(s):  
Justin Vaida ◽  
Justin J. Ray ◽  
Taylor L. Shackleford ◽  
William T. DeCarbo ◽  
Daniel J. Hatch ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Functional Outcome ◽  
Hallux Valgus ◽  
Metatarsal Head ◽  
Level Of Evidence ◽  
3 Dimensional ◽  
First Metatarsal ◽  
Institutional Review ◽  
Retrospective Comparative Study ◽  
Width Reduction

Background: Foot width reduction is a desirable cosmetic and functional outcome for patients with hallux valgus. Triplanar first tarsometatarsal (TMT) arthrodesis could achieve this goal by 3-dimensional correction of the deformity. The aim of this study was to evaluate changes in bony and soft tissue width in patients undergoing triplanar first TMT arthrodesis. Methods: After receiving Institutional Review Board approval, charts were retrospectively reviewed for patients undergoing triplanar first TMT arthrodesis for hallux valgus at 4 institutions between 2016 and 2019. Patients who underwent concomitant first metatarsal head osteotomies (eg, Silver or Chevron) or fifth metatarsal osteotomies were excluded. Preoperative and postoperative anteroposterior weightbearing radiographs were compared to evaluate for changes in bony and soft tissue width. One hundred forty-eight feet from 144 patients (48.1 ± 15.7 years, 92.5% female) met inclusion criteria. Results: Preoperative osseous foot width was 96.2 mm, compared to 85.8 mm postoperatively ( P < .001). Preoperative soft tissue width was 106.6 mm, compared to 99.3 mm postoperatively ( P < .001). Postoperatively, patients had an average 10.4 ± 4.0 mm reduction (10.8% reduction) in osseous width and average 7.3 ± 4.0 mm reduction (6.8% reduction) in soft tissue width. Conclusions: Triplanar first TMT arthrodesis reduced both osseous and soft tissue foot width, providing a desirable cosmetic and functional outcome for patients with hallux valgus. Future studies are needed to determine if patient satisfaction and outcome measures correlate with reductions in foot width. Level of evidence: Level III, retrospective comparative study

scholarly journals Percutaneous Posterior to Anterior Screw Fixation of the Talar Neck

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0020
Author(s):  
Cesar de Cesar Netto ◽  
Lauren Roberts ◽  
Alexandre Godoy Dos Santos ◽  
Jackson Staggers ◽  
Sung Lee ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Achilles Tendon ◽  
Tissue Injury ◽  
Soft Tissue Injury ◽  
Injury Rate ◽  
Posterolateral Approach ◽  
Flexor Hallucis Longus ◽  
Peroneal Tendons ◽  
The Mean ◽  
Tissue Structures

Category: Trauma Introduction/Purpose: Fractures of the talar neck and body can be fixed with percutaneously placed screws directed from anterior to posterior or posterior to anterior. The latter has been found to be biomechanically and anatomically superior. Percutaneous pin and screw placement poses anatomic risks for posterolateral and posteromedial neurovascular and tendinous structures. The objective of this study was to enumerate the number of trials for proper placement of two parallel screws and to determine the injury rate to neurovascular and tendinous structures. Methods: Eleven fresh frozen cadaver limbs were used. 2.0 mm guide wires from the Stryker (Selzach, Switzerland) 5.0-mm headless cannulated set were percutaneously placed (under fluoroscopic guidance) into the distal posterolateral aspect of the ankle. All surgical procedures were performed by a fellowship-trained foot and ankle surgeon. Malpositioned pins were left intact to allow later assessment of soft tissue injury. The number of guide wires needed to achieve an acceptable positioning of the implant was noted. Acceptable positioning was defined as in line with the talar neck axis in both AP and lateral fluoroscopic views. After a layered dissection from the skin to the tibia, we evaluated neurovascular and tendinous injuries, and measured the shortest distance between the closest guide pin and the soft tissue structures, using a precision digital caliper. Results: The mean number of guide wires needed to achieve acceptable positioning for 2 parallel screws was 2.91 ± 0.70 (range, 2 - 5). The mean distances between the closest guide pin and the soft tissue structures of interest were: Achilles tendon, 0.53 ± 0.94 mm; flexor hallucis longus tendon, 6.62 ± 3.24 mm; peroneal tendons, 7.51 ± 2.92 mm; and posteromedial neurovascular bundle, 11.73 ± 3.48 mm. The sural bundle was injured in all the specimens, with 8/11 (72.7%) in direct contact with the guide pin and 3/11 (17.3%) having been transected. The peroneal tendons were transected in 1/11 (9%) of the specimens. The Achilles tendon was in contact with the guide pin in 6/11 (54.5%) specimens and transected in 2/11 (18.2%) specimens. Conclusion: The placement of posterior to anterior percutaneous screws for talar neck fixation is technically demanding and multiple guide pins are needed. Our cadaveric study showed that important tendinous and neurovascular structures are in close proximity with the guide pins and that the sural bundle was injured in 100% of the cases. We advise performing a formal small posterolateral approach for proper visualization and retraction of structures at risk. Regardless, adequate patient education about the high risk of injury from this procedure is crucial.

Effect of Unilateral Accessory Navicular Bone on Radiologic Parameters of Foot

2020 ◽  
pp. 107110072096482
Author(s):  
Mustafa Kara ◽  
Serkan Bayram
Keyword(s):  
Navicular Bone ◽  
Level Of Evidence ◽  
First Metatarsal ◽  
Metatarsal Angle ◽  
Asymptomatic Patients ◽  
Accessory Navicular ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Background: This study aimed to compare the radiologic parameters of both feet in patients with unilateral accessory navicular bone (ANB) and evaluate the differences from one another. Methods: Forty-one patients with unilateral ANB volunteered to participate in this study from August 2019 to January 2020. Patient data, including age, sex, body mass index (BMI), type of ANB, and presence of symptoms were obtained. Group 1 comprised 23 patients with asymptomatic unilateral ANB, and group 2 comprised 18 patients with symptomatic unilateral ANB. Seven radiologic parameters were evaluated assessing hindfoot, midfoot, and forefoot alignment—calcaneal pitch angle, talocalcaneal angle, tibiocalcaneal angle, naviculocuboid overlap (NCO), talonavicular coverage angle (TNCA), anteroposterior talo–first metatarsal angle, and lateral talo–first metatarsal angle. Results: The mean age of patients was 40.1 years in group 1 and 42.6 years in group 2. Mean BMI was 25.2 in group 1 and 26.6 in group 2. No significant differences were noted in the radiologic parameters between the ANB and contralateral sides in all patients. The radiologic parameters of both feet in symptomatic and asymptomatic patients were not significantly different. No significant differences were noted between the affected sides of type 1 and 2 ANB and contralateral sides in terms of the radiologic parameters. BMI was significantly correlated with NCO and TNCA. Conclusion: This study demonstrated that the presence of an accessory navicular bone did not affect radiologic parameters of the foot. Radiologic parameters of both feet in symptomatic patients were not significantly different. Level of Evidence: Level III, diagnostic, comparative study.

scholarly journals Cadaveric Anatomical Study of Sural Nerve: Where is The Safe Area for Endoscopic Gastrocnemius Recession?

2017 ◽  
Vol 11 (1) ◽  
pp. 1094-1098 ◽  
Author(s):  
Alvin Chin Kwong Tan ◽  
Zhi Hao Tang ◽  
Muhammad Farhan Bin Mohd Fadil
Keyword(s):  
Achilles Tendon ◽  
Sural Nerve ◽  
Anatomical Study ◽  
Lower Limbs ◽  
Lateral Border ◽  
Safe Area ◽  
Gastrocnemius Recession ◽  
The Mean ◽  
Tendon Insertion ◽  
Calcaneal Tuberosity

Purpose: To ascertain in cadavers where the sural nerve crosses the gastro-soleus complex and where the gastrocnemius tendon merges with the Achilles tendon in relation to the calcaneal tuberosities. Methods: Twelve cadaveric lower limbs (6 right and 6 left) were dissected. The distances between the calcaneal tuberosities and the lateral border of the Achilles tendon where the sural nerve crosses from medial to lateral, as well as to the gastrocnemius tendon insertion into the Achilles tendon, were measured. Results: The mean and median longitudinal distances from the calcaneal tuberosity to where the sural nerve crosses the lateral border of the Achilles tendon are 9.9cm and 10cm respectively (range 7cm to 14cm). The mean and median longitudinal distances from the calcaneal tuberosity to where the gastrocnemius tendon inserts into the Achilles tendon are 19.9cm and 18.5cm (range 17cm to 25cm) respectively. Conclusion: It is generally safe to place the posterolateral incision more than 14cm above the calcaneal tuberosity to avoid the sural nerve if surgeons plan to use a posterolateral incision for endoscopic recession. The distance between the calcaneal tuberosity to the gastrocnemius tendon insertion into the Achilles tendon is too highly variable to be used as a landmark for locating the gastrocnemius insertion.

scholarly journals First Tarsometatarsal Joint Loading After Sequential Correction of Hallux Valgus Using a Proximal Opening Wedge Metatarsal Osteotomy and Distal Soft Tissue Procedure

2021 ◽  
Vol 6 (3) ◽  
pp. 247301142110269
Author(s):  
Jonathan Kraus ◽  
Michael J. Ziegele ◽  
Mei Wang ◽  
Brian Law
Keyword(s):  
Soft Tissue ◽  
Hallux Valgus ◽  
Contact Force ◽  
Contact Stress ◽  
Soft Tissue Release ◽  
Wedge Osteotomy ◽  
Opening Wedge ◽  
First Metatarsal ◽  
Joint Contact ◽  
The Mean

Background: The proximal opening wedge osteotomy (POWO) of the first metatarsal (TMT-1) is commonly performed in the operative treatment of hallux valgus. Limited work has been dedicated to study POWO’s effect on the TMT-1 joint, however. The purpose of this study is to evaluate the changes in TMT-1 joint contact stress following POWO of the first metatarsal. Methods: Five fresh-frozen cadaveric below-knee specimens (mean age: 73 years) with hallux valgus deformities (mean hallux valgus angle [HVA]: 37.4 ± 8.5 degrees) were studied. The specimens were loaded to 400 N on an MTS servohydraulic load frame. Joint contact characteristics at TMT-1 joint were measured with a Tekscan pressure sensor (Model 6900, 1100 psi; Tekscan Inc, Boston, MA) with various opening wedge sizes of 3, 5, and 7 mm both without and with a distal soft tissue release (DSTR). The contact force, area, and peak contact stress were compared among groups using analysis of variance and post hoc multiple comparisons over the untreated (Dunnett test, P < .05). Results: The mean contact force was 47.7 ± 33.5 N for untreated specimens. This increased sequentially with opening wedge size and reached statistical significance for 7-mm opening wedge (129.7 ± 62.3 N, P = .01) and 7-mm wedge + DSTR (134.8 ± 60.5 N, P = .008). The mean peak contact stress was 2.8 ± 1.3 MPa for the untreated specimens and increased incrementally with wedge size to 5.7 ± 3.0 MPa for 7-mm wedge only ( P = .03) and 5.6 ± 2.5 MPa for 7-mm wedge + DSTR ( P = .05). The contact area increased with corrections, but none reached significance. Conclusion: With increasing opening wedge size, loading of the TMT-1 joint increases. Joint stresses higher than 4.7 MPa have been shown to be chondrotoxic, potentially predisposing patients to arthritic joint changes following POWO. Level of Evidence: XXXXXX

Effect of Achilles Tendon Lengthening and Gastrocnemius Recession on Radiographic Tibiotalar Motion Following Total Ankle Replacement

2020 ◽  
pp. 107110072096961
Author(s):  
Clifford L. Jeng ◽  
John T. Campbell ◽  
Patrick J. Maloney ◽  
Lew C. Schon ◽  
Rebecca A. Cerrato
Keyword(s):  
Achilles Tendon ◽  
Range Of Motion ◽  
Total Ankle Replacement ◽  
Level Of Evidence ◽  
Tendon Lengthening ◽  
Ankle Replacement ◽  
Gastrocnemius Recession ◽  
Achilles Tendon Lengthening ◽  
Retrospective Comparative Study

Background: Surgeons frequently add an Achilles tendon lengthening or gastrocnemius recession to increase dorsiflexion following total ankle replacement. Previous studies have looked at the effects of these procedures on total tibiopedal motion. However, tibiopedal motion includes motion of the midfoot and hindfoot as well as the ankle replacement. The current study examined the effects of Achilles tendon lengthening and gastrocnemius recession on radiographic tibiotalar motion at the level of the prosthesis only. Methods: Fifty-four patients with an average of 25 months follow-up after total ankle replacement were divided into 3 groups: (1) patients who underwent Achilles tendon lengthening, (2) patients who had a gastrocnemius recession, (3) patients with no lengthening procedure. Tibiotalar range of motion was measured on lateral dorsiflexion-plantarflexion radiographs using reference lines on the surface of the implants. Results: Both Achilles tendon lengthening and gastrocnemius recession significantly increased tibiotalar dorsiflexion when compared to the group without lengthening. However, the total tibiotalar range of motion among the 3 groups was the same. Interestingly, the Achilles tendon lengthening group lost 11.7 degrees of plantarflexion compared to the group without lengthening, which was significant. Conclusion: Both Achilles tendon lengthening and gastrocnemius recession increased radiographic tibiotalar dorsiflexion following arthroplasty. Achilles tendon lengthening had the unexpected effect of significantly decreasing plantarflexion. Gastrocnemius recession may be a better choice when faced with a tight ankle replacement because it increases dorsiflexion without a compensatory loss of plantarflexion. Level of Evidence: Level III, retrospective comparative study.

Radiological Evaluation of a Preoperative First Metatarsal Realignment Test for Metatarsus Primus Varus and Hallux Valgus Correction by the Syndesmosis Procedure

2019 ◽  
Vol 41 (3) ◽  
pp. 342-349
Author(s):  
Daniel Yiang Wu ◽  
Eddy Kwok Fai Lam
Keyword(s):  
Soft Tissue ◽  
Hallux Valgus ◽  
Rank Correlation ◽  
Level Of Evidence ◽  
Radiographic Images ◽  
Intermetatarsal Angle ◽  
First Metatarsal ◽  
Spearman’S Rank Correlation ◽  
Surgical Methods ◽  
Wrapping Technique

Background: Metatarsus primus varus correction is one of the primary surgical objectives for hallux valgus correction. Some soft tissue procedures have shown that the first metatarsal can be adequately realigned without osteotomy. The hypothesis of this study was that this correctability should also be demonstrable preoperatively. The purpose of this study was to assess whether a simple forefoot taping technique could do so and whether it could also be correlated with operative results after the syndesmosis procedure. Methods: Between May 2014 and December 2015, 147 feet with hallux valgus from 85 patients with an average age of 46.2 years underwent the syndesmosis procedure. All were followed prospectively with standing radiographic assessment of their first intermetatarsal angle, metatarsophalangeal angle, and medial sesamoid position preoperatively without and with a forefoot wrapping technique and postoperatively at 10 days, 6 months, and 1 year. Results: Their average preoperative intermetatarsal angle was reduced from 14.4 to 8.4 degrees by the wrapping technique, and their average metatarsophalangeal angle was spontaneously reduced from 31.8 to 21.8 degrees. After a minimum 1-year follow-up, they stabilized at 7.4 and 18.6 degrees, respectively. There was significant correlation between hallux valgus and metatarsus primus varus corrections by both forefoot wrapping and surgical methods with Spearman’s rank correlation of metatarsophalangeal angle and intermetatarsal angle corrections ( r = 0.6077, P < .0001 due to the wrapping method; r = 0.7157, P < .0001 due to the syndesmosis procedure). All raw working radiographic images for this study can be viewed in the Supplemental Material section. Conclusion: This study found that a simple forefoot tape-wrapping technique could be used preoperatively to verify first metatarsal mobility for metatarsus primus varus correction by the soft tissue syndesmosis procedure without osteotomies. Level of Evidence: Level II, prospective comparative study.

scholarly journals Secondary Composite Breast Augmentation: Concept and Outcomes, Introduction to a Layered Approach

2020 ◽  
Vol 40 (9) ◽  
pp. 981-986 ◽  
Author(s):  
Eric Auclair ◽  
Alexandre Marchac ◽  
Nathalie Kerfant
Keyword(s):  
Soft Tissue ◽  
Revision Surgery ◽  
Breast Augmentation ◽  
Revisional Surgery ◽  
Treatment Plan ◽  
Fat Grafting ◽  
Level Of Evidence ◽  
Soft Tissue Envelope ◽  
The Mean ◽  
Over Time

Abstract Background Secondary procedures following breast augmentation are often more difficult than primary cases because the soft-tissue envelope changes over time. Objectives This study was conducted to confirm the utility of a composite technique in breast revisional surgery. Methods This was a 9-year retrospective chart and photographic data study of one surgeon’s experience with the combined use of fat and implants in revisional cases. The 148 patients had a follow-up at least 1 year after surgery. Our approach consists of a detailed analysis of the different layers covering the implant and yields a treatment plan addressing all issues involving the secondary breast. Results On average, revisional surgery was performed 8.66 years after the first augmentation. The mean age of the patients at revision surgery was 42 years (range, 22.2-70.7 years). The mean fat harvest was 600 mL (range, 100-3000 mL) and the mean volume of fat reinjected was 153 mL (range, 60-400 mL). The mean volume before and after revision was the same (288 mL vs 289 mL). At the original surgery, the breast implants were located in a subpectoral pocket in 78.7% of the patients and, at the revision surgery, in a subglandular pocket in 74.8% of the patients. Within the first 2 years, 13 patients (8.7%) underwent reoperation for additional fat grafting. Among 45 preoperative breast capsular contractures, there were 8 recurrences in the first 3 years resulting in 4 reoperations. Conclusions Secondary breast augmentation cannot rely solely on implant exchange. Because the soft-tissue envelope also ages over time, fat grafting is mandatory in the vast majority of secondary cases. A rigorous preoperative analysis enables breast defects to be treated appropriately. Level of Evidence: 4

Sign in / Sign up

Export Citation Format

Share Document