Higher BMI Is Associated With Wound Breakdown Following Resection of Haglund Deformity

BACKGROUND

Haglund deformity is characterized by an enlarged posterosuperior calcaneus, often with inflammation of the retrocalcaneal bursa and Achilles tendon. This study aims to determine if obesity is associated with an increased rate of complications after Haglund resection.

METHODS

A retrospective review was conducted on patients who underwent surgical resection for Haglund deformity from January 2015 to December 2023 at a single academic center. The patient cohort was initially stratified by body mass index (BMI) into normal (BMI < 25), overweight (25 ≤ BMI < 30), and obese (BMI ≥ 30). For those classified as obese, further subclassification was performed using the standard system: obesity class I (mild obesity) = BMI 30.0-34.9; obesity class II (moderate obesity) = BMI 35.0-39.9; and obesity class III (severe obesity) = BMI ≥40.0. Data on demographics, surgical techniques, and weightbearing were collected and analyzed. Postoperative complications were compared between groups.

RESULTS

Of the 370 patients included in this study, 20 (5.4%) were classified as normal, 77 (20.8%) were overweight, and 273 (73.8%) were obese. Within the cohort of patients with obesity, 96 (35.2%) were classified as obesity class I, 96 (35.2%) as obesity class II, and 81 (29.7%) as obesity class III.The obese group had a higher proportion of females (70.0%) and Black/African American race (24.5%), and a higher prevalence of diabetes mellitus (22.0%) and American Society of Anesthesiologists scores compared with other groups. Additionally, analysis within the obesity subclassifications revealed significant differences in smoking status, with a higher proportion of nonsmokers as obesity class increased (58.3% in class I, 76.0% in class II, and 79.0% in class III; P = .01). Follow-up duration averaged 10.5 months, with wound breakdown rates significantly higher in the obese group vs the overweight or normal groups (11.0% vs 2.6% vs 0.0%, P = .02). No significant differences in wound complications or outcomes were observed between patients based on different obesity subclassifications.

CONCLUSION

Our findings demonstrate that after Haglund resection, obese patients have a higher risk of complications, particularly wound breakdown. This underscores the necessity of careful patient selection and perioperative optimization.

Weightbearing Protocols and Outcomes in Open Surgical Management of Haglund Syndrome: A Large Retrospective Analysis

Background

Following insertional Achilles tendinopathy debridement and Haglund prominence resection for Haglund syndrome, patients undergo varying degrees of weightbearing limitation (weightbearing as tolerated [WBAT], partial weightbearing [PWB], touchdown weightbearing [TDWB], and nonweightbearing [NWB]). Given the scarcity of large-scale literature on the topic, the purpose of this study is to evaluate the impact of postoperative weightbearing protocols on outcomes after open surgical management of Haglund syndrome.

Methods

This was a retrospective cohort study of patients who underwent open surgical management for Haglund syndrome between January 2015 and December 2023 at a single academic institution by fellowship-trained foot and ankle surgeons. Patients were excluded if they underwent concurrent operative management of additional foot pathologies. Patient demographics, comorbidities, surgical techniques, and postoperative weightbearing protocols were recorded. Complications (Achilles tendon rupture, wound breakdown/infection, persistent pain, plantarflexion weakness) and revision rates were compared across weightbearing protocols. Statistical analysis was conducted using R with significance set at P <.05.

Results

Three-hundred eighty-seven patients were included (mean age 55.2 years, 66.1% female) with a mean follow-up of 10.1 (range: 0-86.3) months. The most common regimen was NWB (n = 268; 69.3%) followed by TDWB (n = 56; 14.5%), WBAT (n = 54; 14.0%), and PWB (n = 9; 2.3%). There were no significant differences in complications between the weightbearing protocols (P = .48354). Complications included persistent pain (n = 40; 10.3%), weakness (n = 6; 1.6%), wound breakdown/infection (n = 33; 8.5%), and rupture (n = 1; 0.3%)]. Revision surgery occurred in 1.8% (n = 7).

Conclusion

This large cohort study found no significant association between postoperative weightbearing protocols and outcomes following open surgical treatment for Haglund syndrome at a mean follow-up of 10.1 months. This study provides evidence that surgeons can individualize appropriate weightbearing protocols based on patient needs and preferences when treating Haglund syndrome with Achilles debridement and Haglund resection.

Level of Evidence

Level III, comparative study.

Complications Following Surgical Treatment of Haglund's Syndrome With and Without Flexor Hallucis Longus Tendon Transfer

BACKGROUND

In the surgical treatment of Haglund syndrome, combining a flexor hallucis longus (FHL) tendon transfer with Achilles tendon may improve plantarflexion strength and reduce strain on the repaired Achilles tendon. However, there is limited research comparing complication rates between surgical approaches with or without concurrent FHL tendon transfer.

METHODS

This was retrospective study of patients who underwent surgical management for Haglund syndrome between January 2015 and December 2023. Surgical management included open central-splitting Achilles tendon débridement, Haglund prominence resection, and subsequent Achilles tendon reattachment, either with or without concurrent FHL tendon transfer. Patient demographics, comorbidities, and postoperative complications were collected. Statistical analysis was conducted to compare outcomes between the two groups.

RESULTS

Among the 390 patients who underwent surgical intervention for Haglund syndrome, 52 individuals received FHL tendon transfer. The average follow-up duration was 10.1 ± 12.9 months. Overall, complications included persistent pain (10.3%), wound breakdown (8.2%), infection (1.8%), plantar flexion weakness (1.5%), and Achilles tendon rupture (0.3%). No notable difference was observed in complication rates between the two groups. However, wound breakdown was higher in the FHL tendon transfer group compared with the non-FHL group (P = 0.5). No patients who received a FHL tendon transfer experienced a postoperative Achilles tendon rupture.

CONCLUSION

In the largest study of patients who underwent surgical treatment for Haglund syndrome, with or without FHL tendon transfer, the overall complication rate was comparable. However, the FHL tendon transfer group exhibited a higher tendency for wound breakdown.

Heel pain in young athletes - not always Sever's Disease: A Narrative Review

Heel pain is a prevalent issue in young athletes, often arising from overuse and increased sporting demands. While Sever's Disease is the predominant cause, various other entities, including stress-related injuries and pathologies like tumors and bone lesions, contribute to this condition. The complex hind foot anatomy, encompassing ossicles, physis, and soft tissues, may lead to heel pain. This study aims to provide physicians with a clinically oriented narrative review of adolescent heel pain, supported by illustrative cases. CONCLUSION: This study aims to offer physicians a comprehensive understanding of the concepts surrounding heel pain in adolescents. By presenting clinically relevant information and illustrated cases, it seeks to enhance medical practitioners' ability to diagnose and manage heel pain effectively in this specific demographic.

Ultrasound imaging and shear wave elastography for the differential diagnosis of heel pain: a comparative cross-sectional study

PURPOSE

In correlation with magnetic resonance imaging (MRI), this study attempts to assess the effectiveness of the diagnostic of ultrasonography (US) features and shear wave elastography (SWE) in determining the different causes of heel pain.

MATERIALS AND METHODS

55 heels with a mean age of 38.33 ± 10.8 were included in the study (10 control cases and 41 cases, 4 of which had bilateral heel pain). There were 23 female cases (56.1%) and 18 male cases (43.95%). Examinations using shear wave elastography (SWE) and ultrasound (US) were done in different positions. MRI and the obtained data were correlated.

RESULTS

When used to diagnose different heel pain causes, ultrasound demonstrated great sensitivity and specificity. SWE demonstrated a good correlation with MRI findings and enhanced the ultrasound's diagnostic precision in identifying plantar fasciitis early on (increased accuracy from 88.9 to 93.33% with 100% sensitivity and 83.3% specificity) and Achilles tendinopathy (increased accuracy from 88.9 to 97.8 with 94.7% sensitivity and 100% specificity).

CONCLUSION

In summary, we concluded that heel pain can be efficiently examined by both ultrasound (US) and shear wave elastography (SWE) with the former being used as the primary effective tool and the latter being done to increase diagnostic accuracy. We also concluded that SWE improved the ultrasound's diagnostic precision in identifying patients with early plantar fasciitis and Achilles tendinopathy and showed a robust relationship with clinical outcomes, enhancing patient evaluation and follow-up.

Radiological angle assessment of Haglund's deformity: validation on Magnetic Resonance Imaging

PURPOSE

Haglund's deformity, an abnormality at the postero-superior corner of the calcaneus is a common cause of posterior heel pain. To date numerous measurements of radiological angles related to the calcaneus have been proposed to differentiate between symptomatic and asymptomatic patients with the deformity. Traditionally, these measurements have been assessed on plain radiographs. The aim of this study was to identify measurements which can be applied to Magnetic Resonance Imaging (MRI) studies of the ankle.

METHODS

A retrospective cohort analysis of 30 MRI ankle studies from patients with symptomatic Haglund's deformity and 32 normal studies as controls was undertaken. The angle of BRINK, the Achilles angle, Calcaneal pitch, Achilles-plantar fascia angle and soleus calcaneal distance were measured on optimal T2 fat-saturated sagittal slices.

RESULTS

There was a statistically significant difference (p < 0.0001) in the angle of BRINK between the Haglund's and control group. The Area-Under-the-Curve (AUC) was 0.7783 in keeping with good discrimination between the two groups. The angle of BRINK measurement is reproducible, with an intra-observer ICC of 0.837 and an inter-observer ICC of 0.824. There was no statistically significant difference between the two groups for the other measurements. In the Haglund's group the Achilles tendon was more likely to attach to the mid 1/3 of the posterior calcaneus as opposed to the superior 1/3 (p = 0.02), calcaneal oedema was more likely to be present (p < 0.001) and non-insertional tendinopathy was more likely to be present (p < 0.001). The presence of a retrocalcaneal bursa is non-specific (p = 0.602).

CONCLUSION

The angle of BRINK demonstrates good discrimination between normal and Haglund's cases on MRI studies and may improve patient management by supporting surgical decision-making. Future work should correlate the angle of BRINK to long-term outcomes.

The Heel Complex: Anatomy, Imaging, Pathologic Conditions, and Treatment

The differential diagnosis for heel pain is broad but primarily involves abnormalities of the Achilles tendon, calcaneus, and plantar fascia. Achilles tendon disorders include tendinosis, tendinitis, and partial or complete tears. Tendinosis refers to tendon degeneration, while tendinitis is inflammation after acute overload. Untreated tendinosis can progress to partial or complete tears. Tendon disorders can be accompanied by paratenonitis or inflammation of the loose sheath enclosing the tendon. Initial management involves rehabilitation and image-guided procedures. Operative management is reserved for tendon tears and includes direct repair, tendon transfer, and graft reconstruction. The calcaneus is the most commonly fractured tarsal bone. The majority of fractures are intra-articular; extra-articular fractures, stress or insufficiency fractures, medial process avulsion, and neuropathic avulsion can also occur. Posterosuperior calcaneal exostosis or Haglund deformity, retrocalcaneal bursitis, and insertional Achilles tendinosis form the characteristic triad of Haglund syndrome. It is initially managed with orthotics and physiotherapy. Operative management aims to correct osseous or soft-tissue derangements. The plantar fascia is a strong fibrous tissue that invests the sole of the foot and contributes to midfoot stability. Inflammation or plantar fasciitis is the most common cause of heel pain and can be related to overuse or mechanical causes. Acute rupture is less common but can occur in preexisting plantar fasciitis. Conservative treatment includes footwear modification, calf stretches, and percutaneous procedures. The main operative treatment is plantar fasciotomy. Plantar fibromatosis is a benign fibroblastic proliferation within the fascia that can be locally aggressive and is prone to recurrence. ©RSNA, 2024 Test Your Knowledge questions for this article are available in the supplemental material.

Role of shear wave elastography in the diagnostic evaluation of plantar fasciitis: a prospective case-control study

OBJECTIVES

To assess the advantage of the addition of shear wave elastography (SWE) to gray-scale sonography in the diagnosis of plantar fasciitis.

METHODS

30 subjects between 18-60 years of age with unilateral heel pain who were clinically suspected of having plantar fasciitis were included in this study. Their affected feet were taken as cases; while their contralateral feet served as controls. On gray-scale ultrasound, the thickness of plantar fascia, its echopattern, presence of hypoechoic areas, and perifasicular collections were recorded. SWE was done by placing seven ROIs within the plantar fascia; and the mean of their Young's modulus was taken in kPa.

RESULTS

Plantar fascial thickening more than 4 mm had 70% sensitivity and 66.7% specificity, echopattern had 90% sensitivity and 96.7% specificity, hypoechoic areas had 80% sensitivity and 96.7% specificity, and perifascial edema had 26.7% sensitivity and 100% specificity for diagnosing plantar fasciitis. Using the ROC curve, the cut-off value of Young's modulus for the diagnosis of plantar fasciitis was found to be ≤ 99.286 kPa. This predicted plantar fasciitis with 97% sensitivity and 100% specificity. The primary diagnostic feature of ultrasound of plantar fascia thickness more than 4 mm detected 21 out of 30 cases of plantar fasciitis; whereas elastography detected an additional 8 cases which would have been missed on B-mode ultrasound alone.

CONCLUSIONS

SWE is a useful supplement and improves the diagnostic accuracy of gray-scale ultrasound in plantar fasciitis.

Double row reconstruction of achilles tendon (speedbridge technique) for haglund syndrome results in early weight bearing

Background

Reconstruction of tendoachilles (TA) tendon using double row reconstruction (speedbridge technique) following excision of haglund deformity is relatively newer technique. The purpose was to assess the clinical outcome and effects of early postoperative mobilization with speedbridge technique.

Methods

This was a prospective observational study performed between January 2018 to February 2019. All the patients underwent open excision of haglund deformity after complete detachment of TA tendon. Reconstruction of TA tendon was done using fibretape and 4.75 mm biocomposite Swivelock [ArthrexAchilles SpeedBridge Convenience Pack (AR-8928 BC-CP)].Clinical evaluation was done using American Orthopedic Foot and Ankle Society (AOFAS) Hind Foot Score (HFS) and Visual Analogue Scale (VAS). Patients were followed at 6weeks, 6 months,12 months,18 months and 2 years.

Results

11 female and 2 male patients (16 feet) with mean age of 53.00 ± 4.93 years were analyzed. Full weight bearing mobilization was started on an average of 10 days postoperatively.The mean postoperative HFS, at 24 months of postoperative period, was 87.61 ± 4.69 compared to mean preoperative HFS of 53.07 ± 5.93.

Conclusion

Haglund deformity excision and reconstruction of Tendoachilles using double row technique is an agile construct for early mobilization with an excellent clinical outcome.

Treatment of Calcific Insertional Achilles Tendinopathy: Knotless Internal Brace versus Knot-Tying Suture Bridge

Background: This study aimed to compare the knotless internal brace technique and the knot-tying suture bridge technique via the medial approach in the treatment of calcific Achilles tendinopathy. Methods: The clinical data of 25 cases of calcific Achilles tendinopathy in which nonoperative treatments had failed were retrospectively collected. All the patients received Achilles tendon debridement and Haglund deformity excision through a medial approach, followed by repair using the knotless internal brace technique or the knot-tying suture bridge technique. Pain was evaluated by using the visual analog scale (VAS). The American Orthopedic Foot and Ankle Score (AOFAS) questionnaire was administered preoperatively and postoperatively. Results: The mean follow-up time was 2.6 (range 2–3.5) years. There were no wound complications and no Achilles tendon ruptures. At 1 year postoperatively, the internal brace group was superior to the suture bridge group in terms of the VAS scores (p = 0.003). However, no differences were noticed between the two groups in either the VAS or the AOFAS scores at 2 years postoperatively. Conclusions: The medial approach in combination with the suture bridge technique was effective in treating calcific Achilles tendinopathy. The knotless internal brace technique involved less pain compared to the knot-tying suture bridge technique only at the early postoperative stage.

Angle of BRINK - a new way to measure Haglund's deformity

INTRODUCTION

Haglund's deformity, an abnormality of the postero-superior corner of the calcaneum, is a common, critically debated cause of posterior heel pain. Several radiological indices such as Fowler-Philip angle, Ruch pitch, Chauveaux-Liet angle, calcaneal pitch angle, parallel pitch lines, and X-Y ratio have been described to measure this deformity. However, most of these lack specificity and have variable intra- and inter-observer reliability.

PURPOSE

The study aims to describe a new radiological "angle of BRINK" (Botchu-Reilly-Iyengar-Nischal-Kakarala) to measure Haglund's deformity.

PATIENT AND METHODS

We performed a retrospective cohort analysis, assessing 20 weight-bearing lateral ankle radiographs of patients with Haglund's deformity (Haglund's cohort) and 100 radiographs without the deformity (normal cohort). Demographic details and angle of BRINK to measure Haglund's deformity were measured for each patient. Statistical analysis was performed using t-test and inter-observer reliability was calculated using kappa coefficient.

RESULTS

The mean angle of BRINK to measure Haglund's deformity in the normal cohort was 20.04° (SD 4.88), and in the Haglund's cohort was 25.1° (SD 3.3). This was statistically significant with a p-value of less than 0.0001. There was excellent intra- and inter-observer reliability with kappa value of 0.8.

CONCLUSION

Our proposed radiological angle of BRINK to measure Haglund's deformity is simple and easy to calculate on standard weight-bearing radiographs. Contrary to the traditional measurements used to estimate the deformity, it has shown a good intra- and inter-observer reliability and can support surgical decision-making process for management of patients with symptomatic Haglund's deformity.

Postoperative Ankle Imaging, 2022

Postoperative ankle imaging requires knowledge of the underlying surgical techniques, the usefulness of various imaging modalities, as well as an appreciation for the desired clinical outcomes. Surgical procedures discussed in this article are tibiotalar fracture fixation, tibiotalar, subtalar, and tibiotalocalcaneal arthrodesis, total ankle arthroplasty, talar osteochondral lesion repair and grafting, lateral ligamentous repair and reconstruction, and peroneal and Achilles tendon repair and reconstruction. Imaging can play a vital role in determining if the expected outcome has been achieved and identifying complications, with particular emphasis placed on the use of radiographs, computed tomography (including weight-bearing), magnetic resonance imaging, and ultrasonography.

Chronic Heel Pain Found to Be Diffuse Large B-cell Lymphoma of the Calcaneus

Primary non-Hodgkin lymphoma of the bone is quite rare, accounting for less than 2% of all lymphomas in adults. We present a unique case of chronic left heel pain in a 34-year-old pregnant woman with a remote history of lower extremity trauma. Unresponsive to conservative treatment, advanced imaging showed an infiltrative soft tissue mass involving the calcaneus and surrounding soft tissues. Biopsy of the area confirmed the diagnosis of Stage I-AE diffuse large B-cell lymphoma. The patient underwent 20 localized radiation treatments to the left heel. Nine years after the diagnosis, the patient remains in remission without signs of disease recurrence. This case report demonstrates that atypical and less common causes of chronic heel pain should be considered in certain clinical scenarios, especially in those unresponsive to conservative treatment.

The Achilles Tendon: Imaging Diagnoses and Image-Guided Interventions-AJR Expert Panel Narrative Review

The Achilles tendon is commonly affected by both chronic repetitive overuse and traumatic injuries. Achilles tendon injuries can potentially affect any individual but have a particularly high incidence in professional athletes. Appropriate imaging evaluation and diagnosis are paramount to guiding appropriate management. In this AJR Expert Panel Narrative Review, we discuss the role of various imaging modalities (particularly ultrasound and MRI) in the assessment of Achilles tendon pathology, focusing on modalities' relative advantages and technical considerations. We describe the most common diagnoses affecting the Achilles tendon and adjacent structures, highlighting key imaging findings and providing representative examples. Various image-guided interventions that may be employed in the management of Achilles tendon pathology are also reviewed, including high-volume injection, tendon fenestration, prolotherapy, and corticosteroid injection. The limited evidence supporting such interventions are summarized, noting an overall paucity of large-scale studies showing benefit. Finally, a series of consensus statements by the panel on imaging and image-guided intervention for Achilles tendon pathology are provided.

Satisfactory Functional Outcome and Significant Correlation with the Length of Haglund's Deformity after Endoscopic Calcaneoplasty: A Minimum 4-Year Follow-Up Study

Background

Haglund's syndrome is a posterosuperior calcaneal prominence with posterior heel pain causing functional disability to the patient. Operative treatment is indicated after failure of conservative measures and includes resection of the bony hump along with retrocalcaneal bursectomy. This study aimed to evaluate the functional outcome and degree of patient satisfaction after endoscopic resection of Haglund's deformity with assessment of correlation with the length of bony exostosis.

Methods

Seventeen patients (21 feet) with a mean age of 44.7 ± 5.1 years were included in this study. Six females and 11 males underwent endoscopic calcaneoplasty. Clinical outcome evaluation included the assessment of the visual analog scale (VAS) and the American Orthopedic Foot and Ankle Society score (AOFAS). The preoperative and postoperative lengths of bony exostosis were measured radiologically. The paired t test and the Wilcoxon signed-rank test compared the preoperative and final postoperative means. P < 0.05 was considered statistically significant.

Results

The mean follow-up period was 56.4 ± 5.1 months. Statistically significant improvements in the preoperative mean of AOFAS (from 55.7 ± 9.3 to 94.3 ± 7.1) and VAS (from 8.1 ± 1.4 to 0.7 ± 1.04) at the final follow-up were noted (P < 0.0001). There was a statistically significant correlation between clinical scores (AOFAS and VAS) and the final postoperative length of the bone above parallel pitch lines (PPLs). The patients were satisfied and returned to their previous activities without reporting major morbidities except one patient who had mild pain with exertion.

Conclusion

Endoscopic calcaneoplasty is a safe, less invasive surgical procedure for the management of Haglund's syndrome after failure of conservative treatment. It provided a satisfactory clinical result without serious complications at a minimum 4-year follow-up.

A Novel Insertional Achilles Tendon Rupture Repair After Heel Spur Debridement: A Case Report

CASE

We report a case of a 46-year-old woman who suffered an insertional Achilles tendon rupture secondary to a fall after undergoing retrocalcaneal and Achilles tendon debridements with flexor tendon transfer. Examination revealed posterior ankle pain with insertional Achilles tendon retraction. Treatment options included continued immobilization vs. surgical repair. She underwent Achilles tendon tenodesis to the calcaneus using a combined gastrocsoleus recession and Krackow suture technique.

CONCLUSION

At the 1-year follow-up, examination revealed pain-free return to normal function. In the presence of a ruptured Achilles tendon with retraction, this repair provided sufficient lengthening and fixation of the Achilles tendon complex.

Extracorporeal Shockwave Therapy Versus Ultrasound Therapy for Plantar Fasciitis: A Systematic Review and Meta-Analysis

The objective of this study was to compare the outcomes of extracorporeal shockwave therapy (ESWT) versus ultrasound therapy (UST) in plantar fasciitis. A systematic review and meta-analysis were performed. An electronic search identifying studies comparing ESWT and UST for plantar fasciitis was conducted. Primary outcomes were morning and activity pain, functional impairment, and the American Orthopaedic Foot and Ankle Society (AOFAS) scale score. Secondary outcomes included the fascial thickness, primary efficacy success rate, activity limitations, pain intensity, and satisfaction. Seven studies enrolling 369 patients were identified. No significant difference was found between ESWT and UST for functional impairment (mean difference [MD] = -2.90, P = 0.22), AOFAS scale score (MD = 35, P = 0.20), and pain in the first steps in the morning (MD = -4.72, P = 0.39). However, there was a significant improvement in pain during activity for the ESWT group (MD = -1.36, P = 0.005). For secondary outcomes, ESWT had improved results in terms of primary efficacy success rate, activity limitations, and patient satisfaction. The reduction of plantar fascia thickness showed no significant difference. Pain intensity after treatment had varied results amongst included studies. In conclusion, ESWT is superior to UST for plantar fasciitis as it improves pain activity and intensity, primary efficacy success rate, and activity limitations.

Prediction of clinical response to corticosteroid or platelet-rich plasma injection in plantar fasciitis with MRI: A prospective, randomized, double-blinded study

PURPOSE

The purpose of this study was to identify association between magnetic resonance imaging (MRI) features and clinical data at baseline and six months following platelet-rich plasma (PRP) or corticosteroid (CS; cortivazol) injection in patients with plantar fasciitis, and to identify initial MRI criteria associated with a favorable clinical response to treatment.

MATERIAL AND METHODS

The study was registered on ClinicalTrials.gov (NCT03857334). MRI examinations of 36 patients with plantar fasciitis lasting more than 3 months who were randomly assigned to receive ultrasound-guided PRP (PRP group, 20 patients) or CS (CS group, 18 patients) injection were quantitatively and qualitatively analyzed with respect to plantar fascia thickness, plantar fascia hyperintensity on T2-weighted STIR (HSTIR) images, calcaneal bone marrow and surrounding soft tissues. Clinical evaluation including visual analytic scale (VAS) assessment and MRI examinations were obtained before and 6 months after treatment. Good clinical response was defined as pain VAS decrease > 50% at 6 months. ROC curves with AUC measurements were used to determine cut-off points.

RESULTS

In the whole study population, an association was found between MRI features (deep soft tissue and calcaneal bone marrow HSTIR) and pain VAS scores for the first steps of the day (P = 0.028 and P = 0.007, respectively). No significant radioclinical associations on post-treatment MRI examinations were found in either group. Initial coronal thickness of plantar fascia was associated with a good clinical response in the CS group (P < 0.01). ROC curve analysis found that 7-mm or thicker plantar aponeurosis at initial MRI was predictive of good clinical response in patients with CS treatment (Youden index = 0.6). PRP infiltrations were effective regardless of fascia thickness (73% of patients with ≤ 7 mm aponeurosis and 67% for thicker ones).

CONCLUSION

Initial facia thickness (> 7 mm) is predictive of good clinical response six months after CS injection, whereas PRP injection shows effectiveness regardless of fascia thickness.

3-T MRI of the Ankle Tendons and Ligaments

Ankle sprain is the most common injury in athletic populations. Ligament and tendon pathologies of the ankle are common, ranging from traumatic injuries to degeneration leading to chronic pain and acquired foot deformities. MRI is the imaging modality of choice to evaluate tendon and ligament pathology of the ankle, specifically derangements of tendons and ligaments. 3-T MRI offers improved imaging characteristics relative to 1.5-T MRI, allowing for better delineation of anatomic detail and pathology. This article provides a review of the anatomy and common pathologies of the ankle ligaments and tendons using high-resolution 3-T MRI.

The Vienna morphological Achilles tendon score-VIMATS : Description, reproducibility and initial clinical results

OBJECTIVE

The purpose was to introduce the Vienna morphological Achilles tendon score (VIMATS), to evaluate its reproducibility and to assess its clinical application.

METHODS

In 38 patients a total number of 40 painful ATs and 20 volunteers were examined on a 3T magnetic resonance imaging (MRI) scanner using a standard MRI protocol. In 20 patients clinical scoring according to the Achilles tendon rupture score was available. Two observers independently assessed the thickness, continuity, signal intensity, and associated pathologies of the Achilles tendon (AT) according to the newly created VIMATS. Intraobserver and interobserver agreements were calculated and the clinical application of the VIMATS regarding its potential to differentiate between patients and volunteers was tested.

RESULTS

An analysis of the Intraclass correlation coefficient (ICC) yielded an excellent intraobserver (ICC 0.925) and interobserver agreement (ICC 0.946) for the total VIMAT score. A significant difference in total VIMATS was found between patients (47.6 ± StD 21.1 points) and volunteers (91.5 ± SD 10.9 points; p < 0.01) as well as a moderate correlation between morphological and clinical scoring (Pearson correlation 0.644).

CONCLUSION

The VIMAT score is the first MRI score for the semiquantitative morphological evaluation of AT injuries and was shown to be an easy, fast and reproducible tool for assessing injuries of the AT.

Differentiating Achilles Insertional Calcific Tendinosis and Haglund's Deformity

Calcification of the posterior portion of the calcaneus has numerous terms that refer to this pathology. Given the number of names, there can be confusion when discussing the different pathologies involving calcification at the insertion of the Achilles tendon at the calcaneus. Two of the diagnosis that can be confused with each other are Haglund's deformity and Achilles insertional calcific tendinosis. This article discusses how these 2 entities are differentiated clinically and how their surgical management is different.

Overuse-Related Injuries of the Musculoskeletal System: Systematic Review and Quantitative Synthesis of Injuries, Locations, Risk Factors and Assessment Techniques

Overuse-related musculoskeletal injuries mostly affect athletes, especially if involved in preseason conditioning, and military populations; they may also occur, however, when pathological or biological conditions render the musculoskeletal system inadequate to cope with a mechanical load, even if moderate. Within the MOVIDA (Motor function and Vitamin D: toolkit for risk Assessment and prediction) Project, funded by the Italian Ministry of Defence, a systematic review of the literature was conducted to support the development of a transportable toolkit (instrumentation, protocols and reference/risk thresholds) to help characterize the risk of overuse-related musculoskeletal injury. The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) approach was used to analyze Review papers indexed in PubMed and published in the period 2010 to 2020. The search focused on stress (overuse) fracture or injuries, and muscle fatigue in the lower limbs in association with functional (biomechanical) or biological biomarkers. A total of 225 Review papers were retrieved: 115 were found eligible for full text analysis and led to another 141 research papers derived from a second-level search. A total of 183 papers were finally chosen for analysis: 74 were classified as introductory to the topics, 109 were analyzed in depth. Qualitative and, wherever possible, quantitative syntheses were carried out with respect to the literature review process and quality, injury epidemiology (type and location of injuries, and investigated populations), risk factors, assessment techniques and assessment protocols.

MRI of the Achilles tendon-A comprehensive pictorial review. Part one

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Presence of normal septation between subtendons may mimic an intrasubstance tear.

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MRI is superior to ultrasound in detection of partial tears.

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Ultrasound is as useful as MRI in detection of tendinopathy and full-thickness tears.

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Kager's fat pad is involved in infection more than in postoperative changes.

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The Achilles tendon xanthoma has a higher signal on T1- and T2-weighted sequences.

The normal Achilles tendon is composed of twisted subtendons separated by thin high signal septae, which are a potential pitfall on MRI because they mimic a tendon tear.

Tendinopathy and full thickness tears may be assessed effectively both on MRI and ultrasound. MRI is superior to ultrasound in detection of partial tears and for postoperative assessment. The use of fat suppression sequences allows the ability to detect focal lesions. Sagittal and coronal sections are useful for assessing the distance between stumps of a ruptured tendon. Sequences with contrast are indicated in postoperative investigations and suspicion of infection, arthritis or tumor. MRI may reveal inflammatory changes with minor symptoms long before the clinical manifestations of seronegative spondyloarthropathy. The most common non-traumatic focal lesion of the Achilles tendon is Achilles tendon xanthoma, which is manifested by intermediate or slightly higher signal on T1- and T2-weighted images compared to that in the normal Achilles tendon. Other tumors of the Achilles tendon are very rare, whereas the involvement of the tendon from tumor in adjacent structures is more frequent.

The novel MRI sequences may help to detect disorders of the Achilles tendon more specifically before clinical manifestation. Regeneration or remodeling of the Achilles tendon can be non‐invasively detected and monitored in diffusion tensor imaging. Assessment of healing is possible using T2-mapping while evaluating the tendon vascularization in intravoxel incoherent motion MRI.

[Genetic hypothesis involving Haglund's syndrome and its association with ankylosing spondylitis: case report]

La maladie de Haglund est une pathologie caractérisée par une excroissance osseuse postéro-supérieure du calcanéum, induisant un conflit avec le tendon d´Achille, et se manifestant principalement par une talalgie postérieure. Nous rapportons l´observation d´une jeune femme de 28 ans suivie pour spondylarthrite ankylosante, avec une maman suivie pour la même maladie systémique, et une tante maternelle opérée pour maladie de Haglund. La patiente a trop trainée pour avoir le diagnostic vu que la talalgie a été considérée comme enthésite de sa maladie de système. La patiente ne s´est pas améliorée sous traitement médical. La chirurgie nous a donné des résultats satisfaisants. Ce qui soulève les hypothèses du caractère génétique et héréditaire du syndrome de Haglund, et sa relation avec la réponse au traitement médical.

Pitfalls in MRI of the Developing Pediatric Ankle

Normal skeletal development in the pediatric ankle is dynamic and often produces variable imaging appearances that are subject to misinterpretation. Radiologists must understand the underlying developmental phenomena, such as endochondral and membranous ossification and physeal fusion, and be familiar with their common and uncommon imaging manifestations unique to the pediatric ankle. This is especially true as the use of MRI in the evaluation of musculoskeletal trauma expands among younger populations. The authors focus on MRI evaluation of the skeletally maturing pediatric ankle and present pearls for accurately distinguishing normal findings and imaging pitfalls from true pathologic findings. The normal but often variable imaging findings of preossification, secondary ossification, and multiple ossification centers, as well as the range of bone marrow signal intensities that can be visualized within ossification centers, are described, along with tips to help differentiate these from true pathologic findings such as contusion, fracture, or tumor. The authors also review dynamic periosteal and physeal contributions to bone growth to highlight helpful distinguishing features and avoid misdiagnosis of common subperiosteal and periphyseal abnormalities. For example, the normal trilaminar appearance of the immature cortex and periosteum should not be mistaken for periosteal reaction, traumatic stripping, or subperiosteal hematoma. In addition, the physis can have several confusing but normal appearances, including normal physeal undulations (eg, Kump bump) or focal periphyseal edema, which should not be mistaken for pathologic findings such as physeal fracture, infection, or bar. ^©RSNA, 2020.

Suture Anchor Versus Allogenic Tendon Suture in Treatment of Haglund Syndrome

Background

Haglund’s deformity is an abnormal bony enlargement on the back of the heel. It can cause the impact of the posterior calcaneal bursa and Achilles tendon insertion, and finally result in pain. This syndrome is called Haglund syndrome. The purpose of this study was to explore the effect of the suture anchor and allogeneic tendon suture in the treatment of Haglund syndrome.

Material/Methods

We retrospectively studied 20 patients with Haglund syndrome treated from January 2015 to December 2016. The patients were randomly divided into Group 1 (the suture anchor group) and Group 2 (the allogeneic tendon group), with 10 patients in each group and an average follow-up of 32 months after surgery. The AOFAS, VAS, and Arner-Lindholm scales were used to summarize the patient follow-up results and complications.

Results

In the 2 groups of patients, the postoperative AOFAS, VAS scores, and the Arner-Lindholm scale showed good results. However, the postoperative AOFAS score and VAS of the suture anchor group were better than those of the allogeneic tendon group, with shorter operation times. No Achilles tendon rupture or wound infection occurred during the entire postoperative period in either group. These results show the superiority of suture anchors.

Conclusions

The higher AOFAS and VAS score and shorter operation time in the suture anchor group suggest it is the better alternative for treatment of Haglund syndrome.

[Advance of diagnosis and treatment of Haglund syndrome]

OBJECTIVE

To review the current research on the diagnosis and treatment of Haglund syndrome.

METHODS

The domestic and foreign literature about Haglund syndrome in recent years was extensively reviewed to summarize and analyze the etiology, anatomy, clinical manifestations, diagnosis, and treatment of Haglund syndrome.

RESULTS

The etiology of Haglund syndrome is not very clear, and it may be related to local friction and high gastrocnemius muscle tension, and there may be a certain genetic tendency. The local anatomy is more complex and there are many adjacent tissue structures. Haglund malformation may cause the impingement of the posterior heel bursa and Achilles tendon insertion, lead to wear of the posterior heel bursa and the Achilles tendon insertion, and finally result in pain. The FPA (Fowler-Philipp angle), CPA (calcaneal pith angle), PPL (parallel pitch lines), CLA (Chauveaux-Liet angle), and X/Y ratios (ratio of total calcaneal length to calcaneal tuberosity length) measured on X-ray film can be used for the diagnostic measurement of Haglund malformation. Treatment includes conservative and surgical treatment (open Haglund ostectomy, dorsal closed wedge osteotomy of the calcaneus, and arthroscopic Haglund osteotomy).

CONCLUSION

Both open and arthroscopic Haglund ostectomy and dorsal closed wedge osteotomy of the calcaneus can achieve satisfactory results, but minimally invasive treatment is the current development trend. Surgeons should pay attention to the management of the calcification of Achilles tendon insertion and reconstruction of Achilles tendon insertion.

Imaging the patient with heel pain

Heel pain is a common presentation in primary care and affects a wide range of the population but predominantly elderly, obese and athletic patients. History and clinical assessment are paramount in the management of this condition but the presentation can confound clinicians, necessitating the use of imaging to confirm or clarify the diagnosis when there is clinical uncertainty. This article illustrates the various conditions producing heel pain to help clinicians determine the appropriate imaging modality to image the common causes of heel pain. A linked article detailing the management of heel pain is included in this issue ( https://doi.org/10.12968/hmed.2019.80.4.196 ).

Intense Therapeutic Ultrasound for Treatment of Chronic Plantar Fasciitis: A Pivotal Study Exploring Efficacy, Safety, and Patient Tolerance

Intense therapeutic ultrasound for chronic plantar fasciitis musculoskeletal tissue pain reduction was evaluated in a pivotal clinical trial examining effectiveness, safety, and patient tolerance. In this single-blinded study, 33 patients received 2 treatments that were 4 weeks apart on plantar fascia tissue along with conservative standard of care. Patients were followed for up to 6 months after the first treatment, receiving a physical examination and diagnostic ultrasound at each follow-up visit and completing patient-/subject-reported outcome measure and Foot Function Index surveys. The goal was to reduce overall pain by ≥25% on average and >25% individually. Hypoechoic area changes on diagnostic ultrasound and adverse events were measured. The percentage meeting pain reduction criteria at weeks 4, 8, 12, and 26 were 72%, 81%, 86%, and 79%, respectively. Mean pain scores at each visit were significantly different from baseline (p < .001) at -39%, -49%, -51%, and -44%. Hypoechoic lesions were found in all patients and decreased in size significantly (p < .05) at weeks 8 and 12 (-56% and -67%). Foot Function Index scores declined favorably from baseline (p < .001) at all time points (-32%, -46%, -49%, and -32%). The percentages of patients meeting satisfaction criteria were 72%, 85%, 90%, and 83%. The mean pain score during treatment 1 was 3.4, and during treatment 2, 2.9. Attrition of only 1 patient owing to pain occurred, after treatment 1. No adverse events occurred. Intense therapeutic ultrasound for chronic plantar fasciitis is shown to be effective, safe, and well tolerated in this pivotal clinical trial.

The Calcaneal Crescent in Patients With and Without Plantar Fasciitis: An Ankle MRI Study

OBJECTIVE

The bundled, crescent-shaped trabeculae within the calcaneal tuberosity-which we term and refer to here as the "calcaneal crescent"-may represent a structural adaption to the prevailing forces. Given Wolff law, we hypothesized that the calcaneal crescent would be more robust in patients with plantar fasciitis, a syndrome in part characterized by overload of the Achilles tendon-calcaneal crescent-plantar fascia system, than in patients without plantar fasciitis.

MATERIALS AND METHODS

MR images of 37 patients (27 women and 10 men; mean age ± SD, 51 ± 13 years; mean body mass index [BMI, weight in kilograms divided by the square of height in meters], 26.8 ± 6.3) referred for workup of foot or ankle pain were retrospectively evaluated by two blinded readers in this study. Patients were assigned to two groups: group A, which was composed of 15 subjects without clinical signs or MRI findings of Achilles tendon-calcaneal crescent-plantar fascia system abnormalities, or group B, which was composed of 22 patients with findings of plantar fasciitis. The thickness and cross-sectional area (CSA) of the Achilles tendon, calcaneal crescent, and plantar fascia were measured on proton density (PD)-weighted MR images. The entire crescent volume was manually measured using OsiriX software on consecutive sagittal PD-weighted images. Additionally, contrast-to-noise ratio (CNR) as a surrogate marker for trabecular density and the mean thickness of the calcaneal crescent were determined on PD-weighted MR images. The groupwise difference in the morphologic measurements were evaluated using ANOVA with BMI as a covariate. Partial correlation was used to assess the relationships of measurements for the group with plantar fasciitis (group B). Intraclass correlation coefficient (ICC) statistics were performed.

RESULTS

Patients with plantar fasciitis had a greater CSA and volume of the calcaneal crescent and had lower CNR (i.e., denser trabeculae) than those without Achilles tendon-calcaneal crescent-plantar fascia system abnormalities (CSA, 100.2 vs 73.7 mm², p = 0.019; volume, 3.06 vs 1.99 cm³, p = 0.006; CNR, -28.40 vs -38.10, p = 0.009). Interreader agreement was excellent (ICC = 0.85-0.99).

CONCLUSION

In patients with plantar fasciitis, the calcaneal crescent is enlarged compared with those without abnormalities of the Achilles tendon-calcaneal crescent-plantar fascia system. An enlarged and trabeculae-rich calcaneal crescent may potentially indicate that abnormally increased forces are being exerted onto the Achilles tendon-calcaneal crescent-plantar fascia system.

Incidence of calcaneal apophysitis in Northwest Istanbul

Background

Calcaneal apophysitis is a common clinical entity affecting children and adolescents. It is also known as Sever’s disease. Heel pain without a recent trauma is the primary manifestation. There are limited studies on the incidence of this disease. In this study, we aimed to report the regional incidence in Istanbul.

Methods

This retrospective audit of health records of all paediatric patients aged 6–17 years between January 1, 2014, and December 15, 2017 was undertaken. During this period, data were extracted from health records that recorded calcaneal apophysitis as the primary diagnosis.

Results

The 4-year incidence of calcaneal apophysitis was found to be 0.35% (74 of 20,967 paediatric patients). It commonly affected males, and bilateral cases were more common than unilateral cases. There were more admissions during the spring season, which may indicate a possible association with physical activity.

Conclusion

Although calcaneal apophysitis is a relatively common paediatric foot problem, due to its benign course and spontaneous healing capacity, most physicians are not interested in this topic. However, increased awareness of this diagnosis is important for reducing the rates of unnecessary radiological examinations and orthopaedic referrals. With increased knowledge, most cases may be diagnosed at the family physician level, which may decrease the economic burden on the health system. Incidence reports from various countries and regions may be published in the future.

Is There a Role for MRI in Plantar Heel Pain

INTRODUCTION

There is an increasing trend to investigate plantar heel pain with magnetic resonance imaging (MRI) scan though plantar fasciitis is the most common cause. The purpose of our study was to evaluate the role of MRI in patients presenting with plantar heel pain.

METHODS

Case notes and MRI scans of 141 patients with a clinical diagnosis of plantar fasciitis were reviewed retrospectively. There were 98 females and 43 males patients. Fourteen patients had bilateral symptoms. Average age for male patients was 51 years (range = 26-78 years), and for female patients the average age was 52 years (range = 29-76 years).

RESULTS

A total of 121 feet had MRI features suggestive of plantar fasciitis. MRI was normal in 32 feet. There was one case of stress fracture of calcaneus and another of a heel fibroma diagnosed on MRI scan.

CONCLUSIONS

In our study, MRI scan was normal in 20.7% of the cases; 1.3% had a diagnosis other than plantar fasciitis but no sinister pathology. We therefore conclude that MRI scan is not routinely indicated and key is careful clinical assessment.

LEVELS OF EVIDENCE

Therapeutic, Level IV: Retrospective, Case series.

Magnetic Resonance Imaging and Clinical Outcomes of Laser Therapy, Ultrasound Therapy, and Extracorporeal Shock Wave Therapy for Treatment of Plantar Fasciitis: A Randomized Controlled Trial

We determined and compared the effectiveness of low-level laser therapy (LLLT), therapeutic ultrasound (US) therapy, and extracorporeal shock wave therapy (ESWT) using magnetic resonance imaging (MRI). We performed a randomized, prospective, comparative clinical study. A total of 60 patients with a diagnosis of chronic plantar fasciitis were divided randomly into 3 treatment groups: group 1 underwent 15 sessions of LLLT (8 J/cm²; 830 nm); group 2 underwent 15 sessions of continuous US (1 mHz; 2 W/cm²); and group 3 underwent 3 sessions of ESWT (2000 shocks). All patients were assessed using the visual analog scale (VAS), heel tenderness index (HTI), American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot scale, Roles-Maudsley score, and MRI before and 1 month after treatment. The primary efficacy success criterion was the percentage of decrease in heel pain of >60% from baseline at 1 month after treatment for ≥2 of the 3 heel pain (VAS) measurements. Significant improvement was measured using the mean VAS, AOFAS scale, and HTI scores for all 3 groups. The thickness of the plantar fascia had decreased significantly on MRI in all 3 groups. The treatment success rate was 70.6% in the LLLT group, 65% in the ESWT group, and 23.5% in the US group. LLLT and ESWT proved significantly superior to US therapy using the primary efficacy criterion (p = .006 and p = .012, respectively), with no significant difference between the LLLT and ESWT groups (p > .05). The treatment of chronic plantar fasciitis with LLLT and ESWT resulted in similar outcomes and both were more successful than US therapy in pain improvement and functional outcomes.

Calcaneal fractures: radiological and CT evaluation and classification systems

Background and aim of the work: The calcaneus, the more lower bone of the body, has the task of supporting the axial load from the weight of the body. Calcaneal fractures represent about 1-2% of all fractures and 60% of the tarsal bones fractures. The articular involvement has been associated with a poor functional outcome. The aim of this work is to describe the radiologic evaluation, the classification systems, the morphological preoperative diagnostic imaging features of calcaneal fractures, highlighting the correlation with the choice of treatment and predictive capacity for the fracture surgical outcome. Methods: A PubMed search was performed for the terms Imaging calcaneus fracture, selecting articles in English language, published in the last two years, where preoperatively diagnostic imaging of fractures of the calcaneus are described. Case reports have not been included. Results: We have collected a number of data that provide important help in preoperative evaluation of calcaneal fractures, such as the new classification system created by Harnroongroj et al, the association of calcaneal fractures with fractures of other bone structures or soft tissue impairment, the use of calcaneotalar ratio in assessing the length of heel. Conclusions: These data suggest an approach geared to the specific choice of treatment and to improving patient outcomes. (www.actabiomedica.it)

CT and MR Imaging of the Postoperative Ankle and Foot

A variety of surgical procedures exist for repair of both traumatic and degenerative osseous and soft-tissue pathologic conditions involving the foot and ankle. It is necessary for the radiologist to be familiar with these surgical procedures, so as to assess structural integrity, evaluate for complicating features, and avoid diagnostic pitfalls. Adequate interpretation of postoperative changes often requires access to surgical documentation to evaluate not only the surgery itself but the expected timeline for resolution of normal postoperative changes versus progressive disease. Appropriate use of surgical language in radiology reports is another important skill set to hone and is instrumental in providing a high-quality report to the referring surgeons. The pathophysiology of a myriad of surgical complaints, beginning from the Achilles tendon and concluding at the plantar plate, are presented, as are their common appearances at computed tomography and magnetic resonance imaging. Commonly encountered entities include Achilles tendon tear, spastic equinus, nonspastic equinus, talar dome osteochondral defect, tarsal tunnel syndrome, plantar fasciitis, pes planovalgus, pes cavovarus, peroneal tendinosis, lateral ligament complex pathology, Morton neuroma, plantar plate tear, and metatarsophalangeal joint instability. Computer-generated three-dimensional models are included with many of the procedures to provide a more global view of the surgical anatomy. Correlation with intraoperative photographs is made when available. When appropriate, discussion of postoperative complications, including entities such as infection and failure of graft integration, is presented, although a comprehensive review of postoperative complications is beyond the scope of this article. Notably absent from the current review are some common foot and ankle procedures including hallux valgus and hammertoe corrections, as these are more often evaluated radiographically than with cross-sectional imaging. ^©RSNA, 2016.

Diagnosis and management of plantar fasciitis

Plantar fasciitis, a chronic degenerative process that causes medial plantar heel pain, is responsible for approximately 1 million physician visits each year. Individuals with plantar fasciitis experience pain that is most intense during their first few steps of the day or after prolonged standing. The authors provide an overview of the diagnosis and management of a common problem encountered in the primary care setting. Routine imaging is not initially recommended for the evaluation of plantar fasciitis but may be required to rule out other pathologic conditions. Overall, plantar fasciitis carries a good prognosis when patients use a combination of several conservative treatment modalities. Occasionally, referral to a specialist may be necessary.

MR imaging as a problem solving tool in posterior ankle pain: A review

Posterior ankle pain is a cause of chronic pain and disability, afflicting a wide range of individuals. While proper identification of the cause is essential for timely and adequate treatment, identifying the cause and excluding mimickers is often challenging for the physician due to the complex nature of the joint. In addition, pathology that can cause posterior ankle pain may occur on their own or in co-existence. Clinical conditions that can present as posterior ankle pain include: posterior ankle impingement, Achilles tendon pathology, medial flexor tendon pathology, peroneal pathology, retrocalcaneal bursitis, posterior subtalar tarsal coalition, sinus tarsi, and tarsal tunnel syndrome. In this review we introduce current concepts of pathophysiology in the main conditions involved in posterior ankle pain, and review the role of MR in the diagnosis and management of each condition. When pathology can be detected earlier and with more specificity, appropriate and time-sensitive treatment can be commenced, thus improving clinical outcomes.

Haglund's Syndrome: A Commonly Seen Mysterious Condition

Haglund's deformity was first described by Patrick Haglund in 1927. It is also known as retrocalcaneal exostosis, Mulholland deformity, and 'pump bump.' It is a very common clinical condition, but still poorly understood. Haglund's deformity is an abnormality of the bone and soft tissues in the foot. An enlargement of the bony section of the heel (where the Achilles tendon is inserted) triggers this condition. The soft tissue near the back of the heel can become irritated when the large, bony lump rubs against rigid shoes. The aetiology is not well known, but some probable causes like a tight Achilles tendon, a high arch of the foot, and heredity have been suggested as causes. Middle age is the most common age of affection, females are more affected than males, and the occurence is often bilateral. A clinical feature of this condition is pain in the back of the heel, which is more after rest. Clinical evaluation and lateral radiographs of the ankle are mostly enough to make a diagnosis of Haglund's syndrome. Haglund's syndrome is often treated conservatively by altering the heel height in shoe wear, orthosis, physiotherapy, and anti-inflammatory drugs. Surgical excision of the bony exostoses of the calcaneum is only required in resistant cases.

"Children are not small adults": avoiding common pitfalls of normal developmental variants in pediatric imaging

Imaging of children is complicated with a vast array of normal variants, congenital or developmental disorders, and age-dependent differential considerations. We present imaging findings of several common anatomic variants as well as physiological and maturational processes that occur in children. We compare and contrast them with pathological entities so that the reader can successfully distinguish them when interpreting pediatric imaging examinations. The content has been accrued from the authors' collective experience at a tertiary-care pediatric hospital, teaching and consulting with radiology trainees and clinicians, as well as a comprehensive review of the literature, and is intended to represent a useful error prevention tool for radiologists interpreting pediatric studies.

Amniotic Tissues for the Treatment of Chronic Plantar Fasciosis and Achilles Tendinosis

Introduction. Allogeneic amniotic tissue and fluid may be used to treat chronic plantar fasciosis and Achilles tendinosis. This innovative approach involves delivering a unique allograft of live human cells in a nonimmunogenic structural tissue matrix to treat chronic tendon injury. These tissues convey very positive regenerative attributes; procurement is performed with maternal consent during elective caesarian birth. Materials and Methods. In the present investigation all patients were unresponsive to multiple standard therapies for a minimum of 6 months and were treated with one implantation of PalinGen SportFLOW around the plantar fascia and/or around the Achilles paratenon. The patients were given a standard protocol for postimplant active rehabilitation. Results. The analogue pretreatment pain score (VAS) of 8. By the fourth week after treatment, all patients had significantly reduced self-reported pain. Twelve weeks following the procedure the average pain level had reduced to only 2. No adverse reactions were reported in any of the patients. Conclusion. All patients in this study experienced heel or Achilles pain, unresponsive to standard therapy protocols. After treatment all patients noted significant pain reduction, indicating that granulized amniotic membrane and amniotic fluid can be successfully used to treat both chronic plantar fasciosis and Achilles tendinosis.

An exceptional case of xanthomatous infiltration of the musculoskeletal and integumentary systems

Tendinous and subcutaneous xanthomas are most commonly associated with primary hyperlipidemia. Xanthomatosis caused by cholesterol deposition can be a high risk marker for cardiovascular disease related to premature atherosclerosis; thus, early recognition of this diagnosis may reduce mortality and morbidity. Achilles tendon involvement is most common, followed by the extensor tendons of the hand and elbow. We present an exceptional case of tendinous and tuberous xanthomas, with intraoperative and histologic correlation, in a 34-year-old female manifesting with xanthomatous deposits of nearly all ankle tendons, plantar aponeurosis, extensor tendons of the hands, and various locations within the integumentum. To the authors' knowledge, only four studies to date have focused specifically on imaging findings of multifocal xanthomas. Thus, the radiographic and MR imaging descriptions of xanthomas in this report further add to the existing literature by helping to identify imaging characteristics of this multifocal systemic disease. The diagnosis of this condition should alert the physician to the presence of a dyslipidemia that can be treated with dietary modifications and/or drug therapy.

Role of (18)F-fluoride PET/CT over dual-phase bone scintigraphy in evaluation and management of lesions causing foot and ankle pain

OBJECTIVE

The purpose of this study was to assess the potential role of (18)F-fluoride PET/CT over dual-phase bone scintigraphy (DBS) in evaluation and management of lesions causing foot and ankle pain.

METHODS

(99m)Tc-HDP DBS and (18)F-fluoride PET/CT were performed in consecutive patients who visited rehabilitation department due to foot or ankle pain. Focal painful lesions in fore, mid, and hindfoot or ankle, and diffuse pain in foot were evaluated on DBS and (18)F-fluoride PET/CT (conclusive, inconclusive, nonvisible) and lesions on each modality were correlated. The clinical course was followed to see if the results of (18)F-fluoride PET/CT affected the decision of patient management.

RESULTS

Sixty-one painful lesions in 31 patients included 16 forefoot (26.2 %), 11 midfoot (18.0 %), 19 hindfoot (31.2 %), 6 ankle (9.8 %), and 9 diffuse footpain (14.8 %). Forty lesions (40/61, 65.6 %) were detected on DBS, including 21 conclusive diagnostic (21/40, 52.5 %), mainly including hindfoot lesions (n = 11). The inconclusive 19 lesions (19/40, 47.5 %) on DBS showed conclusive diagnostic findings on (18)F-fluoride PET/CT, mainly in fore and midfoot lesions (n = 15). Twenty-one painful lesions (21/61, 34.4 %) which were nonvisible on DBS revealed conclusive diagnostic findings on (18)F-fluoride PET/CT in 7 lesions (7/21, 33.3 %), including 5 hindfoot lesions. Fourteen nonvisible lesions (14/21, 66.7 %) on both modalities included all 9 diffuse painful foot lesions. Patient management was affected by findings of (18)F-fluoride PET/CT in 31 lesions (31/61, 50.8 %).

CONCLUSIONS

(18)F-fluoride PET/CT provided more confirmative diagnostic information in painful foot and ankle over DBS, and influenced patient management in many inconclusive or nonvisible cases on DBS. Increasing role of (18)F-fluoride PET/CT in benign diseases including foot and ankle pain is expected in the near future.