A Case of Hystrix-Like Ichthyosis and Deafness Syndrome with a Rare Variant of Gap Junction Protein Beta 2 Gene Mutation / 대한피부과학회지

Hystrix-like ichthyosis and deafness (HID) syndrome is a rare ectodermal dysplasia characterized by erythrokeratoderma and hearing impairments. HID syndrome is a nonocular variant of keratitis ichthyosis deafness (KID) syndrome caused by an autosomal dominant mutation in the gap junction protein β 2 (GJB2) gene. The GJB2 gene encodes connexin 26, a transmembrane protein involved in cell–cell attachment in almost all tissues. We report a case of a 25-year-old man with generalized hyperkeratotic plaques, diffuse palmoplantar keratoderma, and nail deformities since birth. The patient also had a history of recurrent bacterial skin infections in the existing hyperkeratotic lesions. Histopathological examination revealed compact hyperkeratosis and irregular acanthosis in the epidermis, along with upper dermal lymphocytic infiltration. Audiometry revealed high-frequency sensorineural hearing loss. Genetic analysis revealed a missense mutation in the GJB2 gene. Based on clinicopathological findings and genetic testing, HID syndrome was diagnosed.

Venous Insufficiency is a Clear Provoker of Pigmented Purpuric Dermatosis

Background@#Pigmented purpuric dermatosis (PPD) is a chronic disorder characterized by distinct petechial hemorrhage and brownish pigmentation. The cause of PPD is unclear, but several underlying conditions are associated with it. Previous reports suggest that venous insufficiency (VI) might be related to PPD; however, a clear correlation remains unelucidated. @*Objective@#To elucidate the causal relationship between PPD and VI. @*Methods@#A total 118 patients diagnosed with PPD in the Department of Dermatology, Pusan National University Hospital from November 2006 to July 2019 were retrospectively reviewed. Doppler ultrasonography of the lower extremities was performed in 56 PPD patients, who were then divided into two groups: PPD with and without VI. We compared the clinical features between the two groups. In the PPD with VI group, we assessed the correspondence ratios between PPD and VI lateralities, and between the PPD distribution and the veins involved. @*Results@#VI was detected in 35 of the 56 patients (62.5%). The PPD with VI group was significantly associated with wider distribution, darker coloration and longer disease duration. There was a positive correlation of laterality between PPD and VI, and between PPD distribution and the vein involved. @*Conclusion@#This findings suggest that VI is a clear provoker of PPD.

Comparative genetic analyses of Korean bat coronaviruses with SARS-CoV and the newly emerged SARS-CoV-2

Background@#Bats have been considered natural reservoirs for several pathogenic human coronaviruses (CoVs) in the last two decades. Recently, a bat CoV was detected in the Republic of Korea; its entire genome was sequenced and reported to be genetically similar to that of the severe acute respiratory syndrome CoV (SARS-CoV). @*Objectives@#The objective of this study was to compare the genetic sequences of SARSCoV, SARS-CoV-2, and the two Korean bat CoV strains 16BO133 and B15-21, to estimate the likelihood of an interaction between the Korean bat CoVs and the human angiotensinconverting enzyme 2 (ACE2) receptor. @*Methods@#The phylogenetic analysis was conducted with the maximum-likelihood (ML) method using MEGA 7 software. The Korean bat CoVs receptor binding domain (RBD) of the spike protein was analyzed by comparative homology modeling using the SWISS-MODEL server. The binding energies of the complexes were calculated using PRODIGY and MM/GBGA. @*Results@#Phylogenetic analyses of the entire RNA-dependent RNA polymerase, spike regions, and the complete genome revealed that the Korean CoVs, along with SARS-CoV and SARSCoV-2, belong to the subgenus Sarbecovirus, within BetaCoVs. However, the two Korean CoVs were distinct from SARS-CoV-2. Specifically, the spike gene of the Korean CoVs, which is involved in host infection, differed from that of SARS-CoV-2, showing only 66.8%–67.0% nucleotide homology and presented deletions within the RBD, particularly within regions critical for cross-species transmission and that mediate interaction with ACE2. Binding free energy calculation revealed that the binding affinity of Korean bat CoV RBD to hACE2 was drastically lower than that of SARS-CoV and SARS-CoV-2. @*Conclusions@#These results suggest that Korean bat CoVs are unlikely to bind to the human ACE2 receptor.

Omalizumab for Cyclosporine-resistant Chronic Spontaneous Urticaria:A Retrospective Study of a Single Center / 대한피부과학회지

Background@#Cyclosporine is a recommended third-line treatment for chronic spontaneous urticaria (CSU) that is resistant to H1-antihistamines according to the EAACI/GA 2 LEN/EDF/WAO guidelines for management of urticaria. However, some patients with refractory urticaria do not respond to cyclosporine or antihistamines. Omalizumab, a humanized anti-immunoglobulin E antibody, has been shown to be effective and safe for antihistamine-resistant CSU. However, there are few reports on the efficacy of omalizumab in patients with CSU who are resistant to cyclosporine. @*Objective@#To evaluate the efficacy of omalizumab in patients with cyclosporine-resistant CSU. @*Methods@#Recalcitrant CSU patients who had symptoms (seven-day urticaria activity score, UAS7≥7) despite being administered cyclosporine (3∼5 mg/kg/day) and H1-antihistamine at up to a four-fold increased dose for 4 weeks were included in this study. Omalizumab was administered at 150 mg or 300 mg by subcutaneous injection every 4 weeks. Efficacy was assessed using UAS7 12 weeks after the initial administration of omalizumab. @*Results@#A total of 28 patients (18 women, 10 men) with an average age of 43.8 years were included in the study. The mean duration of CSU was 40.0 (2∼288) months, and the mean UAS7 at baseline was 14.2 (9∼35) months. Overall, 22 patients (78.6%) showed a complete (UAS7=0) or partial response (0＜UAS7≤6) at 12 weeks. Patients who were administered 300 mg of omalizumab had a more complete response (9/15, 60%) than those who were treated with 150 mg (3/13, 23.1%). @*Conclusion@#Omalizumab is an effective therapy for CSU patients who do not respond to cyclosporine.

Current Trends in the Treatment of Ankle Arthritis: Analysis of the Korean Foot and Ankle Society (KFAS) Member Survey / 대한족부족관절학회지

Purpose@#Variations in the preferred conservative and operative treatment methods for ankle arthritis may be observed in the practice of orthopedic surgeons. This study is based on the Korean Foot and Ankle Society (KFAS) member survey and aims to report the current trend and changes in the management of ankle arthritis over the last few decades. @*Materials and Methods@#A web-based questionnaire containing 24 questions was sent to all KFAS members in July 2021. The questions were mainly related to the preferred techniques and clinical experience in osteotomy, arthrodesis, and total ankle arthroplasty (TAA) for patients with ankle arthritis. @*Results@#Sixty-three out of 550 surgeons (11.5%) responded to the survey. The responses to 6 out of the total of 24 questions (25.0%) achieved the levels needed to reflect a tendency. Answers that showed a tendency were related to the following: a surgical approach for arthrodesis (anterior approach), use of auto-bone graft for arthrodesis (iliac bone), a nonunion rate of more than 10% following arthrodesis, main reason related to unsatisfactory results after arthrodesis (nonunion or delayed union), the main reason to change total ankle prosthesis (unstable supply of prosthesis), the unusualness of revision TAA and conversion of fusion to TAA. Diversity was found in several aspects of treatment (degree of experience and satisfaction in supramalleolar osteotomy, fixation method for arthrodesis, preferred TAA prosthesis and longevity, degree of experinece, annual number of TAA operation. @*Conclusion@#This study proposes updated information with regard to the current trends in the management of ankle arthritis in Korea. Both consensus and variations in the approach to patients with ankle arthritis were identified through this survey. With an increasing preference for TAA, the need for the development of a prosthesis optimized for Koreans and a stable supply of prostheses were the suggestions made by the study.

Current Trends in the Treatment of Ankle Arthritis: Analysis of the Korean Foot and Ankle Society (KFAS) Member Survey / 대한족부족관절학회지

Purpose@#Variations in the preferred conservative and operative treatment methods for ankle arthritis may be observed in the practice of orthopedic surgeons. This study is based on the Korean Foot and Ankle Society (KFAS) member survey and aims to report the current trend and changes in the management of ankle arthritis over the last few decades. @*Materials and Methods@#A web-based questionnaire containing 24 questions was sent to all KFAS members in July 2021. The questions were mainly related to the preferred techniques and clinical experience in osteotomy, arthrodesis, and total ankle arthroplasty (TAA) for patients with ankle arthritis. @*Results@#Sixty-three out of 550 surgeons (11.5%) responded to the survey. The responses to 6 out of the total of 24 questions (25.0%) achieved the levels needed to reflect a tendency. Answers that showed a tendency were related to the following: a surgical approach for arthrodesis (anterior approach), use of auto-bone graft for arthrodesis (iliac bone), a nonunion rate of more than 10% following arthrodesis, main reason related to unsatisfactory results after arthrodesis (nonunion or delayed union), the main reason to change total ankle prosthesis (unstable supply of prosthesis), the unusualness of revision TAA and conversion of fusion to TAA. Diversity was found in several aspects of treatment (degree of experience and satisfaction in supramalleolar osteotomy, fixation method for arthrodesis, preferred TAA prosthesis and longevity, degree of experinece, annual number of TAA operation. @*Conclusion@#This study proposes updated information with regard to the current trends in the management of ankle arthritis in Korea. Both consensus and variations in the approach to patients with ankle arthritis were identified through this survey. With an increasing preference for TAA, the need for the development of a prosthesis optimized for Koreans and a stable supply of prostheses were the suggestions made by the study.

Omalizumab for Cyclosporine-resistant Chronic Spontaneous Urticaria:A Retrospective Study of a Single Center / 대한피부과학회지

Background@#Cyclosporine is a recommended third-line treatment for chronic spontaneous urticaria (CSU) that is resistant to H1-antihistamines according to the EAACI/GA 2 LEN/EDF/WAO guidelines for management of urticaria. However, some patients with refractory urticaria do not respond to cyclosporine or antihistamines. Omalizumab, a humanized anti-immunoglobulin E antibody, has been shown to be effective and safe for antihistamine-resistant CSU. However, there are few reports on the efficacy of omalizumab in patients with CSU who are resistant to cyclosporine. @*Objective@#To evaluate the efficacy of omalizumab in patients with cyclosporine-resistant CSU. @*Methods@#Recalcitrant CSU patients who had symptoms (seven-day urticaria activity score, UAS7≥7) despite being administered cyclosporine (3∼5 mg/kg/day) and H1-antihistamine at up to a four-fold increased dose for 4 weeks were included in this study. Omalizumab was administered at 150 mg or 300 mg by subcutaneous injection every 4 weeks. Efficacy was assessed using UAS7 12 weeks after the initial administration of omalizumab. @*Results@#A total of 28 patients (18 women, 10 men) with an average age of 43.8 years were included in the study. The mean duration of CSU was 40.0 (2∼288) months, and the mean UAS7 at baseline was 14.2 (9∼35) months. Overall, 22 patients (78.6%) showed a complete (UAS7=0) or partial response (0＜UAS7≤6) at 12 weeks. Patients who were administered 300 mg of omalizumab had a more complete response (9/15, 60%) than those who were treated with 150 mg (3/13, 23.1%). @*Conclusion@#Omalizumab is an effective therapy for CSU patients who do not respond to cyclosporine.

Clinical and Dermoscopic Features of Fungal Melanonychia: Differentiating from Subungual Melanoma

Background@#Fungal melanonychia (FM) is a rare nail disorder that presents as dark pigmentation in the nail plate because of fungal nail infection. The diagnosis of FM is occasionally confusing because its appearance is similar to melanonychia due to other causes including malignant melanoma. Dermoscopy could help increase the accuracy of diagnosing the cause of pigmented nail lesions. However, dermoscopic features of FM are not well elucidated. @*Objective@#This study aimed to investigate clinical and dermoscopic characteristics of FM. @*Methods@#The clinical features and dermoscopic findings of 20 patients diagnosed with FM and 14 patients diagnosed with subungual melanoma the Department of Dermatology of Pusan National University Hospitals (Busan and Yangsan) were retrospectively reviewed. @*Results@#FM mainly occurred as a solitary form in the toenail. Patients in the FM group were older than those in the subungual melanoma group. The most distinguishable general dermoscopic features in FM were a distal diffuse pattern, distal linear pattern, and light brown to yellowish color. FM-associated specific dermoscopic patterns such as the reverse triangular pattern, subungual hyperkeratosis, scale on the nail surface, and white or yellowish streaks were dominantly observed in the FM group compared to the subungual melanoma group. @*Conclusion@#FM-associated dermoscopic patterns and distal diffuse and linear patterns could be helpful diagnostic clues for differential diagnosis of FM from subungual melanoma.

Conservative Management and Postoperative Rehabilitation of Chronic Lateral Ankle Instability / 대한족부족관절학회지

As a result of the increased participation in recreational and competitive sports activity, the incidence of chronic lateral instability has risen. Because chronic ankle instability can cause significant comorbidity and increase the social cost, the interest in this issue is growing. Although there are well-documented and effective surgical treatments for managing this condition, conservative treatments are a viable first option in selected patients. Through conservative treatment, surgical treatments can be reduced or delayed without necessarily affecting the overall outcome, but the failure of conservative treatment results in the need for surgical treatment to reduce the long term complications. Appropriate postoperative rehabilitation is essential for adequate functional recovery, even when surgical treatment is required.

A Case of Costello Syndrome with Severe Palmoplantar Keratoderma / 대한피부과학회지

No abstract available.

Current Updates in Treatment of Osteochondral Lesions of the Talus / 대한족부족관절학회지

Despite the increasing number of osteochondral lesions of the talus, there are a lack of definite evidence-based treatment protocols. Several types of treatments are available, each having their advantages and disadvantages. First-line therapy consists of well-conducted conservative treatment. Surgical treatment is the second choice. Treatments are chosen based on the size of the lesion, location, chronicity, and the condition of the neighboring cartilage. This article reviews the current updates in the treatment of osteochondral lesions of the talus to help clinicians use the available treatment strategies more efficiently.

In Vitro Anti-Inflammation and Chondrogenic Differentiation Effects of Inclusion Nanocomplexes of Hyaluronic Acid-Beta Cyclodextrin and Simvastatin

The aim of this study was to prepare inclusion nanocomplexes of hyaluronic acid-β-cyclodextrin and simvastatin (HA-β-CD/SIM) and evaluate in vitro anti-inflammation effects on lipopolysaccharide (LPS)-activated synoviocytes and chondrogenic differentiation effects on rat adipose-derived stem cells (rADSCs). The β-CD moieties in HA-β-CD could incorporate SIM to form HA-β-CD/SIM nanocomplexes with diameters of 297–350 nm. HA-β-CD/SIM resulted in long-term release of SIM from the nanocomplexes for up to 63 days in a sustained manner. In vitro studies revealed that HA-β-CD/SIM nanocomplexes were able to effectively and dose-dependently suppress the mRNA expression levels of proinflammatory markers such as matrix metallopeptidase-3 (MMP-3), MMP-13, cyclooxygenase-2 (COX-2), a disintegrin and metalloproteinase with thrombospondin motifs-5 (ADAMTS-5), interleukin-6 (IL-6), and tumor necrosis factor (TNF-α) in LPS-stimulated synoviocytes. HA-β-CD/SIM-treated rADSCs significantly and dose-dependently enhanced mRNA expressions of aggrecan, collagen type II (COL2A1), and collagen type X (COL10A1), implying that HA-β-CD/SIM greatly induced the chondrogenic differentiation of rADSCs. Conclusively, HA-β-CD/SIM nanocomplexes will be a promising therapeutic material to alleviate inflammation as well as promote chondrogenesis.

Neurogenic Pain Disorder in the Foot and Ankle: Peripheral Neuropathy / 대한정형외과학회잡지

Most common peripheral neuropathy around foot and ankle is diabetic neuropathy, but there are another cause of peripheral neuropathy, such as rheumatoid arthritis, metabolic disease, genetic disease, toxic material, and so on. The main symptom of peripheral neuropathy is pain. The disturbance of sensory and balancing, weakness of muscle, deformity of foot and neuropathic arthropathy are also the symptoms of the peripheral neuropathy. History taking is most important to identify the cause of peripheral neuropathy. Neurological exam have to include the pin prick test, vibration test, 10 g-monofilamant test and ankle reflex test. Simple radiography is essential to observe the deformities or neuropathic arthropathy at foot and ankle. The presence of peripheral neuropathy, involvement and severity can be identified from nerve conduction study. The study of occlusive arteritis is essential for diabetic neuropathy. The medical treatment of associated disease is important but the pain of peripheral neuropathy should be controlled simultaneously. Medicine include the antidepressants, anticonvulsants, opioids and topical agents. The surgical treatment of peripheral neuropathy include lengthening of Achilles tendon, correction of deformity, the total contact cast and arthrodesis. Surgical decompression of specific nerve might helpful in pain control of peripheral neuropathy.

Fractures of the Tarsal Bone

Fractures of the tarsal bone, such as the navicular, cuboid, and cuneiform, are very rare. These injuries can lead to serious walking difficulties due to pain and deformity of the foot with delayed diagnosis of tarsal bone fractures during an injury to multiple lower extremities. The diagnosis can be done on simple radiographs. Sometime weight bearing radiographs or stress radiographs may be needed for further evaluation. Computed tomography is the most widely available diagnostic tool. Navicular and cuneiform account for the medial column of the foot, whereas cuboid for the lateral column. The treatment of tarsal bone fractures is primarily conservative management, but operative treatment is recommended for intra-articular displacement, dislocation, or shortening of the medial or lateral column of the foot. The operative treatments include screw fixation, plate fixation, or external fixation. Complications include malunion, nonunion, posttraumatic arthritis, avascular necrosis, and deformity of the foot. Tarsal bone fracture has to be evaluated carefully to prevent serious complications.

Diagnosis of Flatfoot Deformity / 대한족부족관절학회지

Flatfoot is defined as loss of medial arch with hindfoot valgus, but normal condition is obscure due to wide individual variance. Loss or decreasing of medial longitudinal arch with radiographic image is clinically diagnosed as flatfoot. Flatfoot without symptoms is not an indication for treatment. The etiologies of flatfoot are congenital cause, hypermobility, tarsal coalition, neuromuscular disease, posttraumatic deformity, Charcot arthropathy, and posterior tibial tendon dysfuction. The flatfoot is classified as congenital and acquired, flexible, and rigid. The diagnosis is made by physical examination and radiographic findings. In particular, the posterior tibial tendon dysfunction is known as adult acquired flatfoot.

The Indication of Ankle Lateral Ligament Reconstruction Using Tendon Graft in Chronic Ankle Instability / 대한족부족관절학회지

PURPOSE: The purpose of this study is to review the indications of ankle lateral complex reconstruction using tendon graft. MATERIALS AND METHODS: We searched PubMed using the index, "ankle, instability, lateral ligament, reconstruction" from 1990 to present (September 30, 2015). We excluded 1) modified Brostrom operation (MBO), 2) conventional tenodesis surgery, 3) review article, 4) technical note, and 5) articles written in another foreign language. We reviewed 24 papers through the publication events, operational method, the indications of surgery, and the specific features of the patient group. RESULTS: There were the indications of 1) previous ligament surgery failure, 2) situation when ligament repair is impossible due to the ligament defect, 3) severe instability (preoperative talar tilt >15degrees, anterior draw >10 mm or the difference of contralateral side talar tilt >5degrees, anterior draw >3 mm), and 4) overweight (body mass index >30 kg/m2). Other considerations included 1) generalized joint laxity and 2) workers, highly-demanded or athlete highly-affected by instability. CONCLUSION: The ankle lateral complex reconstruction using tendon graft could be indicated in patients with the possibility of MBO failure with several considerations.

Sex-Related Differences in Outcomes after Hallux Valgus Surgery

PURPOSE: With differences between the sexes in foot bone anatomy and ligamentous laxity, there is the possibility that the results of hallux valgus surgery may also differ between the sexes. We aimed to compare the results of hallux valgus surgery between the sexes. MATERIALS AND METHODS: The authors retrospectively reviewed 60 males (66 feet) and 70 females (82 feet) who underwent distal or proximal chevron osteotomy for the treatment of hallux valgus deformity between June 2005 and December 2011. We compared the clinical and radiologic outcomes between the sexes. RESULTS: There were no statistically significant differences in demographics between the sexes. The mean American Orthopedic Foot and Ankle Society score, visual analogue scale for pain, and patient satisfaction at the last follow-up did not differ significantly between the sexes. The mean preoperative hallux valgus angle (HVA) and inter-metatarsal angle (IMA) were not significantly different between the sexes. At the last follow-up, the mean HVA was significantly greater in females (p=0.003) than in males; mean IMA was not significantly different between the sexes. The mean correction of HVA in males was significantly greater than that in females (p=0.014). CONCLUSION: There were no significant differences between the sexes regarding clinical outcomes after distal and proximal chevron osteotomy. However, male patients achieved greater correction of HVA than female patients. There is a possibility that sexual dimorphism of the foot may affect postoperative HVA.

Sex-Related Differences in Outcomes after Hallux Valgus Surgery

PURPOSE: With differences between the sexes in foot bone anatomy and ligamentous laxity, there is the possibility that the results of hallux valgus surgery may also differ between the sexes. We aimed to compare the results of hallux valgus surgery between the sexes. MATERIALS AND METHODS: The authors retrospectively reviewed 60 males (66 feet) and 70 females (82 feet) who underwent distal or proximal chevron osteotomy for the treatment of hallux valgus deformity between June 2005 and December 2011. We compared the clinical and radiologic outcomes between the sexes. RESULTS: There were no statistically significant differences in demographics between the sexes. The mean American Orthopedic Foot and Ankle Society score, visual analogue scale for pain, and patient satisfaction at the last follow-up did not differ significantly between the sexes. The mean preoperative hallux valgus angle (HVA) and inter-metatarsal angle (IMA) were not significantly different between the sexes. At the last follow-up, the mean HVA was significantly greater in females (p=0.003) than in males; mean IMA was not significantly different between the sexes. The mean correction of HVA in males was significantly greater than that in females (p=0.014). CONCLUSION: There were no significant differences between the sexes regarding clinical outcomes after distal and proximal chevron osteotomy. However, male patients achieved greater correction of HVA than female patients. There is a possibility that sexual dimorphism of the foot may affect postoperative HVA.

Categorization and Clinicopathological Features of Chronic Rhinosinusitis With Eosinophilic Mucin in a Korean Population

OBJECTIVES: Chronic rhinosinusitis (CRS) with eosinophilic mucin is relatively rare in Korea. We categorized CRS patients with characteristic eosinophilic mucin into several groups and compared the groups based on their clinicopathological features. METHODS: In total, 52 CRS patients with eosinophilic mucin were enrolled. Based on the presence or absence of an allergy (A) to a fungus or fungal element (F) in the mucin, the patients were divided into four groups: allergic fungal rhinosinusitis (AFRS, A+F+), AFRS-like sinusitis (A+F-), eosinophilic fungal rhinosinusitis (EFRS, A-F+), and eosinophilic mucin rhinosinusitis (EMRS, A-F-). Clinical and immunological variables were compared between the groups. RESULTS: There were 13 patients in the AFRS group, 13 in the EFRS group, and 26 in the EMRS group. No patient was assigned to the AFRS-like sinusitis group. The AFRS group showed a significantly higher association with allergic rhinitis than did the EFRS and EMRS groups. The mean total serum IgE level in the AFRS patients was significantly higher than in the EFRS and EMRS patients. While 7.7% of the patients with AFRS and EFRS were asthmatic, 65.4% of the patients with EMRS had bronchial asthma. In the AFRS and EFRS groups, 31% had bilateral disease, in contrast to 100% of EMRS patients with bilateral disease. The prevalence of high attenuation areas by computed tomography was significantly higher in the AFRS group than in the EMRS group, and the mean Hounsfield unit values of the areas of high attenuation in the AFRS patients were significantly greater than those in the EMRS patients. CONCLUSION: AFRS is believed to be an allergic response to colonizing fungi in atopic individuals. In EFRS, local allergies to fungi may play a role in the pathogenesis of the disease. EMRS is thought to be unconnected with fungal allergies.

Treatment of Acute Achilles Tendon Rupture / 대한족부족관절학회지

Acute Achilles tendon rupture is a frequent injury during sports and recreational activities. Treatments for Achilles tendon rupture have been controversial in recent decades. Traditionally the surgical treatment had benefit over nonsurgical treatment in terms of low rerupture rate and early functional restoration. Recently, nonsurgical treatment was found to show no statistically significant inferiority in re-rupture rate, functional outcome, and calf strength. Whereas, surgical treatment had some complications including adhesion, nerve injury, and infection. Nonsurgical treatment has been increasing due to functional rehabilitation with early weight bearing and restricted early motion. It focuses more attention on the course of caring for patients with deep discussion. There are open repair and minimally invasive repair in terms of surgical treatment. There are various techniques for minimally invasive repair of Achilles tendon, which has some advantages over the open repair. However, the optimal technique for minimally invasive repair has not been established. The number of suture strands is important regardless of suture technique.