Publications by authors named "Soo-Min Cha"

Background: Extra-articular but severely comminuted distal basal fractures of the proximal phalanx (PP) are rarely reported. Therefore, the aim of this study was to achieve proper union and desirable outcomes using low-profile locking plates/screws. We introduced our own surgical approach and reported the clinical/radiographic outcomes via retrospective case series.

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 We hypothesized a treatment guideline for ulna/radius nonunion after failed surgical treatment and propose to verify it in a prospective study. Herein, we report our preliminary findings and review the current trend.  Six patients who met the criteria were retrospectively investigated, and we further categorized "nonunion of both the radius/ulna" into four subcategories.

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Article Synopsis
  • Congenital pseudoarthrosis of the tibia (CPT) is a rare condition often linked with neurofibromatosis type 1 (NF1), characterized by tibial bowing and the risk of nonhealing fractures, requiring treatment that may include both conservative methods and various surgical options.
  • A study involving nine pediatric patients assessed the effectiveness of vascularized fibula reconstruction vs. conservative treatment, measuring outcomes like fractures and limb length discrepancies.
  • Results showed that while all surgical flaps survived, patients experienced complications such as stress fractures and limb length issues, confirming that vascularized free fibula flaps can be a viable option even for those with prior failed surgeries.
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Purpose: We hypothesized that multiple absorbable screws/K-wires would be effective for native head preservation in comminuted radial head fracture fixation (com-RHFs).

Methods: Seventeen patients who met the inclusion criteria between 2018 and 2020 were included. Radiologic findings indicating proper union and clinical outcomes such as the range of elbow motion, visual analog scale score, and Mayo Elbow Performance Score were assessed prospectively after surgery and at least three years of follow-up.

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Background: We have attempted to restore the arc of motion by considering trochlear-coronoid articulation as a complete circle during fixation of the coronoid, even for comminuted coronoid fractures with partial loss of articular cartilage (CCFPLAC), using various kinds of locking plates. Herein, we report the radiological and clinical outcomes after fixation of the basal-1 type of CCFPLAC (O'Driscoll classification) using our method.

Methods: Thirty-one patients diagnosed with CCFPLAC were admitted between January 2012 and December 2020.

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We have encountered consecutive children/adolescents with a volar Barton fracture (VBF) pattern without involving the physis. These were managed by buttress plating; thus, we would like to report the radiological and clinical outcomes through retrospective case series and suggest the revisiting of the 'VBF category' in this population. We screened children/adolescents with a diagnosis of trauma to the bony structures in the wrist from 2008 to 2019.

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  • The study explores a modified surgical technique for treating scaphoid waist nonunion using specific K-wire placements and cancellous bone grafts, aiming to enhance bone healing.
  • A comparison between the modified method (34 patients) and the conventional method (38 patients) shows that the modified approach significantly reduced the time for bone union and improved clinical outcomes.
  • Results indicated a shorter union time of 11.4 weeks for the modified method versus 13.0 weeks for the conventional method, with higher bony union rates (97.1% vs. 89.5%) and better Mayo wrist scores in the modified group.
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We treated distal radius fractures (DRFs) beyond the watershed line without fracture of the lunate volar rim using a volar locking plate (VLP) and report the radiological and clinical outcomes at least 3 years after surgery. In 41 consecutive patients between January 2012 and August 2017, the fragment was composed of the radial styloid process (distal to the watershed line) and the lunate volar rim was intact. We evaluated demographic factors, radiological features and radiological/clinical outcomes at the final follow-up.

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Purpose: We hypothesised that traditional iliac tricortical bone grafts (no vascularised) still have a reasonable role in promoting satisfactory bony healing in non-union defects of certain sizes. Here, we report the clinical/radiological outcomes through a retrospective case series.

Methods: We screened 74 patients with definitive non-union in the long bones of the upper extremities who visited the outpatient department from 2008 to 2018.

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As the aging population increases, the number of patients with osteoporosis is gradually rising. Osteoporosis is a metabolic bone disease characterized by low bone mass and the microarchitectural deterioration of bone tissue, resulting in reduced bone strength and an increased risk of low-energy or fragility fractures. Thus, the use of anti-resorptive agents, such as bisphosphonates (BPs), to prevent osteoporotic fractures is growing annually.

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Background: We hypothesized that most of the atypical femoral fractures (AFFs) associated with bisphosphonate treatment for breast cancer (BC) could be found before the fracture event in another radiological examination already performed by breast surgeons, rather than on simple radiographs (SRs).

Methods: We thoroughly inspected the clinical charts of BC patients treated at our institute between 2008 and 2017. In total, 228 patients were categorized into three groups based on SRs: complete AFF on at least one side (group 1); incomplete fracture on at least one side, but not any complete fracture (group 2); and no suspicious lesion (group X) on either femur.

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Purpose: Forearm fractures are the most frequent long bone fractures in children. There have been many reports of differences in leg length due to overgrowth in lower extremity fractures. However, reports of such overgrowth in fractures of the upper extremity are rare.

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Article Synopsis
  • The study investigated the effectiveness of ulnar shortening osteotomy (USO) in adolescents under 18 with secondary ulnar impaction syndrome following trauma, specifically looking at clinical and radiologic outcomes from 2006 to 2018.
  • A total of 22 patients were categorized based on their growth potential, with surgical adjustments made according to their age and the status of their growth plates.
  • Results showed significant improvement in ulnar variance and wrist motion post-surgery, with high patient satisfaction based on pain and functionality scores, though longer-term monitoring is suggested for ongoing assessment.
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This study aimed to investigate how long it takes for the dorsally displaced distal radial epiphysis to achieve realignment. We retrospectively reviewed 56 patients with dorsally displaced Salter-Harris type II distal radial epiphyseal fractures who were aged ≤15 years at the time of injury. All fractures were treated with closed reduction and immobilised using a sugar tong splint for 6 weeks.

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Article Synopsis
  • The study focused on treatment strategies for Seymour fractures (SFs), dividing 26 patients treated between 2000 and 2019 into three categories based on the severity and presentation of their injuries.
  • Treatment methods varied by category: K-wire fixation was used for typical acute SFs, while delayed presentations required irrigation and suturing, and severe crush injuries needed more complex repairs.
  • Results showed overall satisfactory outcomes with minimal complications, though patients with the most severe injuries had slightly worse pain and mobility scores compared to those with less severe cases.
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Purpose: We treated several patients with multiple flexor (flexor digitorum profundus; FDP) injuries accompanied by injuries to the digital nerve or vessels around the distal interphalangeal crease (zone 1). Here, we retrospectively report the outcomes and review the literature.

Materials And Methods: Between January 2010 and December 2018, 16 patients who met the study inclusion criteria were investigated.

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  • The study investigates early signs of atypical femoral fractures (AFF) in patients receiving bisphosphonate (BP) treatment, focusing on how these signs might reverse before an actual fracture occurs.
  • The researchers analyzed 102 patients diagnosed with incomplete atypical femoral fractures (IAFF) over a span of 12 years, categorizing them into three groups based on the severity of their condition.
  • Key findings revealed that longer BP treatment periods and shorter cessation times increased the likelihood of fracture progression, while additional prophylactic treatments significantly influenced this outcome.
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Purpose: Atypical ulnar fracture (AUF) related to prolonged bisphosphonate therapy is a rare complication. We propose diagnostic criteria of AUFs and present a treatment algorithm.

Methods: Twelve AUFs in 10 patients were studied.

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Backgroud: The best treatment for isolated greater tuberosity (GT) fractures is still controversial. Although previous studies have suggested surgical options, they are either unable to provide firm fixation or present with a variety of complications.

Methods: We retrospectively studied the records of patients with isolated GT fractures who underwent open reduction and internal fixation using a 3.

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  • The study aimed to investigate how common postoperative radial nerve palsy (PORNP) is after treating humeral shaft fractures using a specific surgical technique called the posterior triceps splitting approach.
  • Researchers analyzed data from 118 patients treated by a single surgeon, categorizing fractures by location and the AO/OTA classification system, and recorded recovery times for any PORNP cases.
  • Results showed an 11% incidence of PORNP, with full recovery occurring within an average of 10.3 weeks; notably, experience level of the surgeon significantly reduced the incidence of nerve palsy, but fracture level and type did not have a significant impact.
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Background: We hypothesized that the outcomes of articular reduction with elimination of irreducible articular intercalary fragments for Mayo type IIB fractures fixed using olecranon locking plates would be as satisfactory as those of noncomminuted fractures.

Methods: A total of 65 patients were enrolled from among 92 who had undergone operative treatment for olecranon fractures between March 2008 and February 2015. Patients with fragments that were eliminated because they were too comminuted to be fixed during surgery (type IIB) were included in group 1.

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Backgroud: We hypothesized that concurrent temporary fixation of scapholunate ligament (SL) injury during volar locking plate (VLP) fixation of distal radius fractures (DRFs) would improve restoration outcomes based on both radiological and clinical results. Here, we performed a prospective, comparative study investigating the effectiveness of temporary percutaneous reduction/pinning during VLP fixation in DRFs.

Methods: The first 43 consecutive SL injuries were treated concurrently after VLP fixation by closed pinning (group 1); the next 36 consecutive injuries were treated nonoperatively (group 2).

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Backgroud: The purpose of this study was to compare the histologic outcomes of rotator cuff (RC) repair with demineralized bone matrix (DBM) augmentation and those without DBM augmentation and to evaluate the role of DBM for tendon-to-bone (TB) healing in a rabbit model.

Methods: Twenty-six adult male New Zealand white rabbits were randomly allocated to the control group (n = 13) or the DBM group (n = 13). Repair was performed 8 weeks after complete transection of the right supraspinatus tendon of all rabbits.

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Article Synopsis
  • The study aimed to assess the outcomes of treating comminuted open fractures of the metacarpal bone using antegrade intramedullary nailing (AIN) in patients with soft tissue, tendon, and neurovascular injuries, evaluated at least two years after surgery.
  • The research included 27 patients and utilized radiographic imaging and clinical assessments (like pain and functional scores) to measure recovery, with successful bone union occurring at an average of 12.3 weeks and significant improvements in bone alignment and shortening.
  • Results showed satisfactory recovery with low pain scores, good range of motion, and grip strength close to the normal side, suggesting that AIN is an effective and uncomplicated method for treating these complex fractures
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Background: We postulated that residual distal radioulnar joint (DRUJ) instability after distal diaphyseal or metaphyseal fracture in the radius or ulna may occur due to malaligned or malunited bony structures as well as primary or secondary soft issue stabiliser. Here, we report the outcomes of corrective osteotomy in a retrospective study.

Methods: Patients undergoing the osteotomy for DRUJ instability between March 2000 and February 2018 were included in the study.

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