Category: Hindfoot Introduction/Purpose: Plantar fasciitis is one of the common foot complaints that is chronic and can induce dysfunction. Approximately 80% of patients improve with conservative management such as stretching exercise, ice bag massage, and splint. Refractory plantar fasciitis, unresponsive to conservative care for more than 6months, can be treated with insole, extracorporeal shockwave therapy, injection, and surgery etc. Total contact insole (TCI) is effective in reducing pain with just putting it in the shoes but quite expensive and time consuming for the custom production. Therefore, we produced alternative three-spike insole that can press about half of patient’s plantar fascia using 3-dimensional (D) printing and compared the clinical outcomes with it and TCI. Methods: A pragmatic, participant-blinded randomized trial was carried out from February 2019 to January 2020. Inclusion criteria was refractory plantar fasciitis and the duration of follow-up for each patient was 6 months. Three-dimensional printing used thermoplastic polyurethane (TPU) for the material of insole and the hardness was 58 +- 5 Shore-A. Twenty-eight patients were randomly allocated to use a three-spike insole or a TCI (Figure 1). The following assessment tools were used; visual analog scale for pain, American Orthopaedic Foot & Ankle Society (AOFAS) score, Foot and Ankle Outcome Score (FAOS), Karlsson- Peterson (KP) score, Medical Outcomes Study Short Form-36 (SF-36) for quality of life, and Foot Function Index (FFI). The groups were evaluated by a blinded assessor at baseline and after 6, 12, and 24 weeks. Results: The groups were homogenous for the majority of variables at baseline. Overall patient reported satisfaction showed improvement from mean 5.2 (range, 1 - 12) weeks of wearing and patient’s wearing time in a day was mean 2.4 (range, 0.5 - 3.0) hours. All the subscales except for sports in FAOS and mental component summary in SF-36 showed significant improvement from 6 weeks in both groups. There was no significant difference in all parameters between both groups at 6 weeks but AOFAS score, some of FAOS subscales, KP score, SF-36, and FFI showed significantly better outcome in three-spike insole group at 12 weeks. Those significant differences in outcome parameters tended to diminish at 24 weeks. Conclusion: We reaffirmed that insole is effective in plantar fasciitis and showed the three-spike insole restores function rapidly comparing to TCI. Three-spike design that supports not the whole longitudinal arch but about half of it was efficient enough. We can manufacture the three-spike insole for the popularization that can lower the price and producing time.

Category: Ankle Arthritis Introduction/Purpose: Total ankle arthroplasty (TAA) has been more suggested to patients with end-stage ankle osteoarthritis. However, there were few studies which had investigated long-term clinical outcomes with mobile bearing system. The purpose of this study is to evaluate the long-term outcomes of total ankle arthroplasty with use of the Hintegra prosthesis and to identify prognostic factors that affect the outcome. Methods: Between September 2004 and December 2009, 118 ankles underwent total ankle arthroplasty with Hintegra prosthesis. Clinical outcomes were assessed annually after operation using visual analog scale (VAS), American Orthopaedic Foot & Ankle Society (AOFAS) scores, plain radiographs and re-operation. Kaplan-Meier survival plot showed survival outcomes of TAA in long-term follow-up. Results: The mean follow-up period was 10.9 years (range 9.0-14.3). The mean change from baseline to final follow-up was -6.7 ± 4.3 points for VAS, and 26.1 ± 10.3 points for the AOFAS score. Three (2.5%) of the ankles required metal component revision at a mean of 2.9 ± 1.8 years (range, 0.5 to 5.8 years) after primary surgery. Five (4.2%) ankles underwent conversion to arthrodesis. Cystic osteolysis that needed surgery was 19 (16.1%) cases, most frequent lesion was posterior aspect of distal tibia. 65 ankles (55.1%) showed heterotopic ossifications but the degree of heterotopic ossification was not significantly correlated with VAS and AOFAS score. Revision with metal component as the end point of prosthesis was 86% at 10 years of follow up. Conclusion: Long term outcomes were satisfactory after mobile-bearing total ankle arthroplasty. Further study to elucidate possible reasons for osteolysis and subjective pain after TAA is warranted.

Category: AnkleKeywords: Osteochondral lesions of talus; large cyst; osteochondral autograft transfer system Introduction/Purpose: Osteochondral lesions of talus (OLTs) are often treated primarily by fragment excision, abrasion, drilling, or microfracture. However, OLT accompanying with large cyst has been challenged to yield good outcome nevertheless of many surgical options. Recent study showed significant high failure rate of arthroscopic marrow stimulation treatment larger than 150mm2. The current study is to investigate the outcome of the primary osteochondral autograft transfer system (OATS) for large cystic type OLT (>150mm2).

BackgroundTraumatic brain injury (TBI) has been known to accelerate bone healing. Many cells and molecules have been investigated but the exact mechanism is still unknown. We aimed to investigate the effect of TBI on fracture healing regarding accelerated hematoma formation.MethodsWe retrospectively investigated patients who were surgically treated for lower leg fractures and who showed secondary bone healing. Patients with and without TBI were divided for comparative analyses. Radiological parameters were time to bridging callus formation and the largest callus ratio during follow-up. Preoperative levels of complete blood count and chemical battery within 3 days from trauma were measured in all patients. Subgroup division regarding age, gender, open fracture, concomitant fracture and severity of TBI were compared.ResultsWe included 48 patients with a mean age of 44.9 (range, 17 – 78), of whom 35 patients (72.9%) were male. There were 12 patients with TBI (Group 1) and 36 patients without TBI (Group 2). Group 1 showed shorter time to callus formation (P < 0.001), thicker callus ratio (P = 0.015), leukocytosis and lymphocytosis (P ≤ 0.028), and lower red blood cell counts (RBCs), hemoglobin, and hematocrit (P < 0.001). Aging and severity of TBI were correlated with time to callus formation and callus ratio (P ≤ 0.003) while gender, open fracture, and concomitant fracture were unremarkable.ConclusionLower leg fractures with TBI showed accelerated bone healing and superior measurements associated with hematoma formation (lymphocytes, RBCs, hemoglobin, hematocrit). Promoted fracture healing in TBI was correlated with the enhanced proinflammatory state.Level of Evidence: Case control study; III