Ankle arthroplasty

PURPOSE: The standard principle of total knee arthroplasty (TKA) targeted by most orthopaedicians is the alignment of the lower limb in a neutral mechanical axis. However, for several patients the neutral mechanical alignment is not normal. Aligning these patients to a neutral mechanical axis may not result in desirable outcomes as it may feel unnatural. This study aimed to discover what percentage of the young healthy Indian population have a neutral hip-knee-ankle angle (HKA = 180°) and what percentage of this population have a deviation from the neutral HKA...

No abstract text is available yet for this article.

BACKGROUND: Open access (OA) publications are increasingly common in orthopaedic literature. However, whether OA publications are associated with increased readership or citations among total ankle arthroplasty (TAA) literature is unclear. We hypothesize that compared with non-OA status, OA status is associated with increased social media dissemination, and readership, but not with citation count. This study aimed to analyze social media attention, citations, readership, and cost of TAA OA and non-OA publications...

BACKGROUND: Artificial intelligence (AI) large language models (LLMs), such as Chat Generative Pre-trained Transformer (ChatGPT), have gained traction as both augmentative tools in patient care but also as powerful synthesizing machines. The use of ChatGPT in orthopaedic foot and ankle surgery, particularly as an informative resource for patients, has not been described to date. The purpose of this study was to assess the quality of information provided by ChatGPT in response to commonly asked questions about total ankle replacement (TAR)...

INTRODUCTION: Large bone defects such as those encountered after failed total ankle replacement have previously been a relative contraindication to revision ankle replacement due to inadequate bone stock. We describe our experience and patient reported outcomes with a modular ankle replacement system with tibial and talar augments. METHODS: This is a retrospective case series analysis of patients who underwent a total ankle replacement using the INVISION system across 2 centers between 2016 and 2022...

BACKGROUND: Prior literature has demonstrated that ipsilateral hindfoot arthrodesis may increase the risk for reoperation after total ankle arthroplasty (TAA) and that simultaneous hindfoot arthrodesis with TAA could result in short-term clinical and radiologic improvements. The purpose of this study is to compare the reoperation rates after TAA with prior hindfoot arthrodesis vs simultaneous arthrodesis and TAA. METHODS: Patients who underwent primary TAA were identified in the PearlDiver database...

No abstract text is available yet for this article.

Girdlestone arthroplasty is a traditional approach for complicated infections occurring with contralateral spastic hemiplegic cerebral palsy, which presents intricate challenges in rehabilitation. In this case report, an 18-year-old girl came to a multispecialty hospital with a history of falls. She was an identified case of femoral head dislocation with acute osteomyelitis and a history of spastic hemiplegic cerebral palsy. She underwent girdlestone arthroplasty with additional upper tibial and ankle pin traction...

BACKGROUND: In end-stage arthritis indicated for total ankle arthroplasty (TAA), full-thickness cartilage damage, subchondral bone defect/shaving, and fluttering of the talar dome occur, shortening the distance between the tibial and talar insertions of ligaments and leading to laxity of ligaments surrounding the ankle joint. Under such conditions, medial ligaments (including the deltoid ligament) would not be expected to function properly. To stabilize the ankle joint during the stance phase, medial ligament function under tension is important...

BACKGROUND: As total ankle arthroplasty (TAA) is an increasingly common surgical intervention for patients with end-stage ankle arthritis, there is a need to better understand the dynamic performance of prosthetic implants during activities of daily living. Our purpose was to quantify and compare relative tibiotalar motion during gait in persons with a fixed-bearing (FB) and mobile-bearing (MB) total ankle arthroplasty. We hypothesized a FB prosthesis would have lower tibiotalar range of motion (ROM)...

BACKGROUND: In revision total knee arthroplasty (TKA), there is little information on the magnitude of potential limb lengthening, risk factors for lengthening, or its impact on patient-reported outcome measures. We aimed to quantify limb length alteration during revision TKA and assess risk factors for lengthening. METHODS: We identified 150 patients over a 3-year period who underwent revision TKA and had preoperative and postoperative EOS hip-to-ankle standing radiographs...

PURPOSE: The objective of this study was to compare the degree of accuracy in implant positioning and limb alignment offered by two robot-assisted (RA) systems: an image-based robot-assisted (IBRA) versus an imageless robot-assisted (ILRA) system for the treatment of medial knee osteoarthritis with unicompartmental knee arthroplasty (UKA). METHODS: This retrospective radiographic study included medial UKAs performed between 2011 and 2023. Radiographic measurements taken preoperatively and at 1-year postoperative control visit focusing on hip-knee-ankle angle (HKA), posterior tibial slope (PTS), tibial component coronal alignment relative to Cartier's angle and restoration of proper joint line (JL) height were analyzed...

AIMS: The purpose of this study was to assess the success rate and functional outcomes of bone grafting for periprosthetic bone cysts following total ankle arthroplasty (TAA). Additionally, we evaluated the rate of graft incorporation and identified associated predisposing factors using CT scan. METHODS: We reviewed a total of 37 ankles (34 patients) that had undergone bone grafting for periprosthetic bone cysts. A CT scan was performed one year after bone grafting to check the status of graft incorporation...

AIMS: The aim of this study was to investigate the distribution of phenotypes in Asian patients with end-stage osteoarthritis (OA) and assess whether the phenotype affected the clinical outcome and survival of mechanically aligned total knee arthroplasty (TKA). We also compared the survival of the group in which the phenotype unintentionally remained unchanged with those in which it was corrected to neutral. METHODS: The study involved 945 TKAs, which were performed in 641 patients with primary OA, between January 2000 and January 2009...

BACKGROUND: The success of total ankle arthroplasty (TAA) involves objective and subjective parameters such as joint motion and implant survival. Patient-reported outcome measures provide key context from the patient's perspective so that we can evaluate the results of these procedures. The Forgotten Joint Score (FJS) has demonstrated validity and reliability in other arthroplasties, but the existing evidence on the FJS in TAA is very limited. QUESTION/PURPOSES: We aimed to assess the reliability, validity, responsiveness to change, and floor and ceiling effects, as well as to perform a gender analysis, of the FJS in patients who had undergone TAA...

BACKGROUND: Ankle fracture is a common injury and often requires operative treatment. This study investigated short-term (≤4 months) and long-term (>4 months) complications after ankle fracture surgery in a 23-year period with use of data from a comprehensive, nationwide, individual-level register. METHODS: Data regarding patients who underwent operative treatment for ankle fracture were collected from the Finnish Care Register for Health Care and analyzed with use of logistic and Cox regression...

INTRODUCTION: Progressive pseudorheumatoid dysplasia is a rare autosomal recessive disorder caused by a mutation in the Wnt1-inducible signaling protein 3 gene, with few cases reported. CASE REPORT: We discuss the case of a 19-year-old Caucasian male patient with polyarticular involvement, including shoulders, elbows, wrists, hands, spine, hips, knees, and notably the ankles. Despite a well-conducted medical treatment, due to the rapid progression of his condition, the patient underwent bilateral total hip and knee arthroplasties, as well as left ankle replacement...

INTRODUCTION: Periprosthetic joint infection (PJI) is an unfortunate but frequent complication following total hip arthroplasty, with an incidence of 1%. Debridement, antibiotics, and implant retention is a treatment option for acute hematogenous PJI, with success rates reported up to 70%. Here, we present a case demonstrating short-term success using this treatment approach in a 74-year-old medically infirm patient. CASE REPORT: The patient - a 74-year-old male with well-functioning bilateral total hip arthroplasties performed 14 years prior - presented to a rural emergency department with an acute onset of right groin pain and dizziness...

Osteochondral lesions of the talus (OLTs) are the most common cause of chronic deep ankle pain. Joint-preserving surgeries include bone marrow stimulating, chondral transporting, and cellular-based procedures. Each procedure has its advantages and disadvantages. For that reason, a focal metallic inlay was developed as a bridge between biologics and conventional joint arthroplasty. Despite promising initial results, prefabricated implants are associated with unpredictable results. This article describes a novel customized patient-specific metal inlay as a treatment option for OLTs...

BACKGROUND: Increasing deformity of the lower extremities, as measured by the Hip-Knee-Ankle Angle (HKAA), is associated with poor patient outcomes after total hip and knee arthroplasty (THA, TKA). Automated calculation of HKAA is imperative to reduce the burden on orthopaedic surgeons. We proposed a detection-based deep learning (DL) model to calculate HKAA in THA and TKA patients and assessed the agreement between DL-derived HKAAs and manual measurement. METHODS: We retrospectively identified 1,379 long-leg radiographs (LLR) from patients scheduled for THA or TKA within an academic medical center...