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1.
Artículo en Inglés | MEDLINE | ID: mdl-39287788

RESUMEN

BACKGROUND: This study evaluated the outcome of the Cartiva synthetic cartilage implant (SCI) in the treatment of hallux rigidus. METHODS: In the present retrospective matched case-control study, we compared 18 patients with Cartiva SCI (mean follow-up: 17.7 months) to 18 patients with metatarsophalangeal joint arthrodesis (mean follow-up: 20 months) using multiple function measures, along with four specified visual analog subscales for pain. Pre- and postoperative radiographs were compared, and radiographic abnormalities were documented. RESULTS: We observed no significant differences in function measures between groups. While both groups experienced significant pain reduction, the arthrodesis group reported significantly lower exertion pain than the Cartiva SCI group (p = 0.004). Radiographic abnormalities, including implant site enlargement (6/18, 33.3%), erosive changes of the metatarsal bone (11/18, 61.1%) or articular surfaces (10/18, 55.6%), and bright sclerotic margins (12/18, 66.7%), occurred in the Cartiva SCI group. CONCLUSION: The present study showed good functional results and a high satisfaction rate after MTP joint arthrodesis, which is considered the gold standard surgical treatment for higher grade hallux rigidus. While the Cartiva SCI group did not show significant differences from the arthrodesis in most aspects of function and clinical scores, the arthrodesis group tended to have better results in terms of satisfaction, residual pain, and revision rate. Even after the short follow-up period, there were some remarkable radiographic findings in the Cartiva SCI group, the long-term effects of which are not yet evident, but which may lead to implant loss. Cartiva SCI has advantages for patients who prioritize postoperative mobility, but the potential risks should be considered in the patient's informed consent. Therefore, the present study highlights the importance of MTP joint arthrodesis for the treatment of hallux rigidus. LEVEL OF EVIDENCE: Level IV - Retrospective matched case-control study.

2.
Unfallchirurg ; 125(3): 189-195, 2022 Mar.
Artículo en Alemán | MEDLINE | ID: mdl-35147709

RESUMEN

The aim of supramalleolar conversion osteotomy is to reduce the pain of the patient and stop or at least slow down joint degeneration. The indication for supramalleolar osteotomy is asymmetric osteoarthritis of the ankle joint with varus or valgus deformity. Good clinical results for arthritis can be achieved in the early or middle stages. Besides closing and opening wedge osteotomies dome osteotomy is sometimes indicated, especially for larger deformities. The preoperative preparation of individual patient-specific section blocks facilitates the intraoperative implementation and seems to increase the precision. Further studies are necessary to support this. The indications for additional procedures, such as fibular osteotomy are still being discussed. Inframalleolar osteotomy and soft tissue interventions are frequently necessary for balancing the foot.


Asunto(s)
Articulación del Tobillo , Osteoartritis , Articulación del Tobillo/diagnóstico por imagen , Articulación del Tobillo/cirugía , Humanos , Osteoartritis/diagnóstico por imagen , Osteoartritis/cirugía , Osteotomía/métodos
3.
J Foot Ankle Surg ; 61(4): 760-765, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35370050

RESUMEN

There is no clear recommendation for wound closure material in foot and ankle surgery. Thus, we hypothesized that there was no difference in clinical outcomes among 3 suture materials, namely, absorbable sutures, nonabsorbable sutures, and metallic staples. This study compared the 3 materials for wound closure in foot and ankle surgery. In this prospective randomized study, 124 patients were randomly divided into the nonabsorbable suture group, absorbable suture group, and staple group. ASEPSIS score, Hollander Wound Evaluation Scale, and numerical rating scale (regarding pain and satisfaction) were collected at first dressing changes, suture removal, and 6 weeks after surgery. Suture time and incision length were recorded. No significant differences were detected for the ASEPSIS and Hollander Wound Evaluation Scale scores. There was significantly more pain after 6 weeks in the nonabsorbable suture group. The closure time (13 s/cm) with staples was significantly lower in the nonabsorbable suture group than in the other groups. Regardless of wound closure material, male sex and obesity appeared to be associated with a higher risk for the occurrence of wound complications. The 3 suture materials showed no significant differences regarding the frequency of wound complications. Staples and absorbable sutures should therefore be considered in the repertoire of suture materials used in foot and ankle surgery.


Asunto(s)
Herida Quirúrgica , Técnicas de Sutura , Tobillo , Humanos , Masculino , Dolor , Estudios Prospectivos , Suturas
4.
Ther Umsch ; 79(7): 348-356, 2022 Sep.
Artículo en Alemán | MEDLINE | ID: mdl-35983943

RESUMEN

Diagnosis and Therapy of Acute Achilles Tendon Ruptures Abstract. Acute Achilles tendon ruptures are a common pathology and often affect young athletic patients. Diagnosis is mostly clinical and by ultrasound. Conservative and operative treatment algorithms exist. The result of the treatment is mostly influenced by the elongation of the tendon during healing. Operative procedures tend to lead to less elongation but have a complication risk. After-treatment should be functional to reduce complication rate and faster rehabilitation. Treatment results are good in general, but some weakness is often found on the injured side.


Asunto(s)
Tendón Calcáneo , Traumatismos de los Tendones , Tendón Calcáneo/diagnóstico por imagen , Tendón Calcáneo/patología , Tendón Calcáneo/cirugía , Humanos , Rotura/diagnóstico , Rotura/rehabilitación , Rotura/cirugía , Traumatismos de los Tendones/diagnóstico , Traumatismos de los Tendones/cirugía , Resultado del Tratamiento
5.
Orthopade ; 50(2): 96-103, 2021 Feb.
Artículo en Alemán | MEDLINE | ID: mdl-33337505

RESUMEN

Mini implants are increasingly used in foot and ankle surgery. They preserve the joints' functions, are easy to insert and easy to convert to an alternative treatment. Early surgical attempts using silastic implants did not bring the expected success. First achievements where reached with modern metallic mini implants in the first metatarsophalangeal (MTP) joint and the ankle joint. For a few years now, a polyvinyl alcohol implant has been used to treat the arthritic first MTP joint. Even severe arthritic joints can be treated with an implant made of polylactide. This implant can also be used in the treatment of Lisfranc joint pathologies. To address severe osteochondral defects of the talus, an innovative hemiarthroplasty implant has been suggested. This article gives a summary of currently used mini implants. Their application as possible alternatives to total joint replacement or joint fusion are critically reviewed in the light of the current literature.


Asunto(s)
Artroplastia de Reemplazo , Hemiartroplastia , Articulación Metatarsofalángica , Tobillo , Articulación del Tobillo/diagnóstico por imagen , Articulación del Tobillo/cirugía , Artrodesis , Humanos , Articulación Metatarsofalángica/cirugía
6.
Foot Ankle Surg ; 27(8): 911-919, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33483221

RESUMEN

BACKGROUND: There have been no biomechanical evaluations of naviculocuneiform (NC) joint fixation. This study compared biomechanically 3 different fixation constructs for NC-1-3 joint fixation. METHODS: The present study compared the three fixation constructs lag screw with locking plate for each NC joint, two crossed lag screws for each NC joint and a separate lag screw for each NC joint with bridging locking plates. NC-1-3 fixation was performed stepwise, and rotation of each joint was evaluated after the application of each lag screw or locking plate and their removal. RESULTS: All examined fixation techniques led to a significant reduced rotation of the NC joints. For NC-1 rotation decreased from 2.8° (Range 1.2-6.6°) to 0.6° (0.2-3.0°) for lag screw and locking plate (p = 0.002) and from 5.0° (1.7-9.8°) to 1.0° (0.1-3.6°) for crossed lag screws (p = 0.002). For NC-2, locking plate constructs were better with 0.2° (0.1-0.5°) compared to crossed lag screw osteosynthesis with 0.9° (0.2-1.6°) (p = 0.011). CONCLUSION: Each evaluated fixation technique led to a reduced NC joint rotation. The fixation of any NC joint had no relevant effect on the adjacent NC joints. The results might support surgeons treating NC joint disorders.


Asunto(s)
Tornillos Óseos , Artropatías , Fenómenos Biomecánicos , Placas Óseas , Fijación Interna de Fracturas , Humanos
7.
Foot Ankle Surg ; 27(1): 110-115, 2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-32197888

RESUMEN

BACKGROUND: Although the outcomes of total ankle arthroplasty (TAA) have improved, unsolved problems such as stress shielding remain. Although dual energy X-ray absorptiometry (DEXA) is the "gold standard" for evaluation of these issues, it is rarely used in patients after TAA. This study aimed to establish a scan technique and to assess the mechanical changes in bone density caused by bone stock preparation. METHODS: Eight fresh-frozen cadaver legs were investigated by DEXA before TAA, with implant in situ, and after implant removal. Scan surface, bone mineral content, and bone mineral density were analysed to assess mechanical bone mass changes. RESULTS: We examined data for density changes by bone compression after TAA, and found "good" results for internal reliability but only "acceptable" results for external reliability. CONCLUSIONS: The results were reliable and reproducible. Using the present data, mechanical and biological processes can be considered together to understand the postoperative phases of bone remodelling after TAA.


Asunto(s)
Absorciometría de Fotón/métodos , Articulación del Tobillo/diagnóstico por imagen , Artroplastia de Reemplazo de Tobillo , Densidad Ósea/fisiología , Cadáver , Estudios de Factibilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados
8.
Arch Orthop Trauma Surg ; 140(6): 785-791, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32112161

RESUMEN

INTRODUCTION: Due to demographic changes, total knee arthroplasty (TKA) is one of the most frequently performed orthopedic surgeries. Therapies for associated postoperative complications, such as postoperative knee stiffness (PKS), are becoming increasingly important. The aim of this retrospective matched-pair analysis was to evaluate mid-term-results following manipulation under anesthesia (MUA). MATERIALS AND METHODS: Fifty-one patients with PKS were evaluated and 51 matched-pair patients without PKS after primary TKA were chosen for the control group. In addition to the range of motion, the functionality was recorded by Knee Society Score (KSS), Western Ontario and Mc Masters Universities Osteoarthritis Index (WOMAC), and Short-Form-12 Questionnaire (SF-12). Experience of pain was mapped using a 10-point Numeric Rating Scale (NRS), and the analgesic requirement was mapped using the WHO step scheme. A final follow-up examination was conducted approximately three years after TKA. To evaluate potential risk factors for the development of PKS, TKA alignment was measured via postoperative X-ray images. RESULTS: Improvement of the average knee flexion of 35.7° and total flexion of 107.4° was detected in PKS patients after MUA. The flexion of the control group was 112.4°; no significant between-group difference was present regarding prosthesis type, sex, age and BMI. Regarding KSS, WOMAC, and SF-12, the MUA cohort achieved statistically-relevant lower overall scores than the control group, p = 0.006, p = 0.005, p = 0.001, respectively. Significantly higher experiences of pain and a higher need for analgesics in MUA patients were reported (p = 0.001 and p < 0.001, respectively). Radiological evaluation of the prosthesis alignment did not show any differences between the two groups. CONCLUSIONS: MUA can improve mobility after PKS, whereby MUA seemed to be a functional therapy option for PKS. Compared to the control group, the MUA group showed lower functional values and an increased experience of pain. A correlation between prosthesis malalignment and MUA could not be detected radiologically. Further studies are necessary to investigate the reasons for PKS.


Asunto(s)
Rodilla/fisiopatología , Manipulación Ortopédica/métodos , Complicaciones Posoperatorias/terapia , Rango del Movimiento Articular/fisiología , Anestesia , Artroplastia de Reemplazo de Rodilla/efectos adversos , Humanos , Artropatías/terapia , Rodilla/cirugía , Análisis por Apareamiento , Estudios Retrospectivos
9.
Orthopade ; 49(11): 991-999, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-33104862

RESUMEN

Concomitant valgus deformities of the ankle joint are found in approximately 3% of patients with symptomatic flat foot deformities. Conservative treatment is mostly successful only in the short term or in low-demand patients. The operative treatment of flat foot deformities follows the standard algorithm for flat foot treatment. The ankle joint can be treated while retaining mobility or by arthrodesis depending on the degree and rigidity of the deformity, degenerative changes, patient factors and expectations. Achieving an orthograde hindfoot and midfoot is obligatory for successful treatment as well as in ankle reconstructive or arthrodesis procedures.


Asunto(s)
Articulación del Tobillo/cirugía , Artrodesis/métodos , Artroplastia de Reemplazo de Tobillo , Pie Plano/cirugía , Articulación del Tobillo/diagnóstico por imagen , Pie , Humanos
10.
Foot Ankle Surg ; 26(2): 146-150, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-30718168

RESUMEN

Background Hallux valgus is a common diagnosis in orthopedics. Only a few studies have analyzed the effects of conservative therapy. Therefore, the current study analyzed the effect of a dynamic hallux valgus splint. Methods Seventy patients were included in this prospective randomized trial. Patients with a hallux valgus were treated using a dynamic splint or underwent no treatment. Clinical and radiological parameters were evaluated. Results We found no significant changes in hallux valgus angle, intermetatarsal I-II angle, AOFAS score, FAOS or SF-36 score between the groups. However, a significant between-group difference was found for pain during walking and running and in the FAOS subscale for pain and pain at rest at follow-up. Conclusions Wearing a dynamic hallux valgus splint does provide some pain relief in patients with a symptomatic hallux valgus, but showed no effect on hallux valgus position. Level of evidence: 1.


Asunto(s)
Hallux Valgus/terapia , Férulas (Fijadores) , Adolescente , Adulto , Anciano , Femenino , Hallux Valgus/fisiopatología , Humanos , Masculino , Persona de Mediana Edad , Dolor/fisiopatología , Manejo del Dolor , Dimensión del Dolor , Estudios Prospectivos , Carrera/fisiología , Caminata/fisiología , Adulto Joven
11.
Foot Ankle Surg ; 25(3): 371-377, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-30306891

RESUMEN

BACKGROUND: Despite intensive research there is no consensus about the talocrural joint axis. The aim of the present study is a new method to determinate the geometric rotational axis of the talocrural joint. METHODS: We analyzed 98 CT-scans of full cadaver Caucasian legs. We generated three-dimensional reconstruction models of the talus. A best fitting cone was orientated to the talar articular surface. The geometric rotational axis was defined to be the axis of this cone. RESULTS: The geometric rotational axis of the talocrural joint is orientated from lateral-distal to medial-proximal (85.6°±10 compared to anatomical tibial axis in torsional plane), from posterior-distal to anterior-proximal (81.43°±44.35 compared to anatomical tibial axis in sagittal plane) and from posterior-medial to anterior-lateral (169.2°±5.91 compared to intermalleolar axis in axial plane). CONCLUSIONS: The consideration of our results might be helpful for better understanding of ankle biomechanics.


Asunto(s)
Articulación del Tobillo/anatomía & histología , Articulación del Tobillo/diagnóstico por imagen , Adulto , Anciano , Anciano de 80 o más Años , Cadáver , Simulación por Computador , Femenino , Humanos , Imagenología Tridimensional , Masculino , Persona de Mediana Edad , Rotación , Tomografía Computarizada por Rayos X
12.
Foot Ankle Surg ; 25(5): 674-678, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30306892

RESUMEN

BACKGROUND: Thorough understanding of the morphometry of the ankle joint is crucial to optimize conservative and operative therapy of ankle joint disorders. Despite recent improvements, basic anatomic and biomechanical correlations of the ankle joint including the orientation of the ankle joint axis and joint morphology as its key biomechanical features are not sufficiently recorded to date. The aim of this study was the evaluation of the ankle morphometry to gain information about the ankle joint axis. MATERIAL AND METHODS: In this study 98 high-resolution CT-scans of complete Caucasian cadaver legs were analysed. Using the software Mimics and 3-Matic (Materialize) 22 anatomic parameters of the talocrural joint were assessed, including the length, width and surface area of the tibial and talar articular areas. Additionally, the radii of the articular areas, the medial distal tibial angle and the height of the talar dome were determined. RESULTS: The radius of the central trochlea tali was 44.6±4.1mm (mean±SD). The central trochlea tali arc length was 40.8±3.0mm and its width was 27.4±2.5mm. Additionally we determined 47.0±4.4mm for the tibial sagittal radius, 27.6±3.0mm for the tibial arc length and 27.4±2.5mm for the central tibial width. CONCLUSION: The present study describes the three-dimensional morphometry of Caucasian ankle joints in detail. This dimensional analysis of the ankle joint will inform the development and placements of implants and prostheses.


Asunto(s)
Articulación del Tobillo/anatomía & histología , Articulación del Tobillo/diagnóstico por imagen , Procesamiento de Imagen Asistido por Computador , Adulto , Anciano , Anciano de 80 o más Años , Cadáver , Femenino , Humanos , Masculino , Persona de Mediana Edad , Astrágalo/anatomía & histología , Astrágalo/diagnóstico por imagen , Tibia/anatomía & histología , Tibia/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Población Blanca
13.
J Orthop Sci ; 23(2): 321-327, 2018 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-29174422

RESUMEN

BACKGROUND: For the treatment of hallux valgus commonly distal metatarsal osteotomies are performed. Persistent problems due to the hardware and the necessity of hardware removal has led to the development of absorbable implants. To overcome the limitations of formerly used materials for biodegradable implants, recently magnesium has been introduced as a novel implant material. This is the first study showing mid-term clinical and radiological (MRI) data after using magnesium implants for fixation of distal metatarsal osteotomies. MATERIAL AND METHODS: 26 patients with symptomatic hallux valgus were included in the study. They were randomly selected to be treated with a magnesium or standard titanium screw for fixation of a modified distal metatarsal osteotomy. The patients had a standardized clinical follow up and MRI investigation 3 years' post-surgery. The clinical tests included the range of motion of the MTP 1, the AOFAS, FAAM and SF-36 scores. Further on the pain was evaluated on a VAS. RESULTS: Eight patients of the magnesium group and 6 of the titanium group had a full clinical and MRI follow up 3 years postoperatively. One patient was lost to follow-up. All other patients could be interviewed, but denied full study participation. There was a significant improvement for all tested clinical scores (AOFAS, SF-36, FAAM, Pain-NRS) from pre-to postoperative investigation, but no statistically relevant difference between the groups. Magnesium implants showed significantly less artifacts in the MRI, no implant related cysts were found and the implant was under degradation three years postoperatively. CONCLUSION: In this study, bioabsorbable magnesium implants showed comparable clinical results to titanium standard implants 3 years after distal modified metatarsal osteotomy and were more suitable for radiologic analysis. LEVEL OF EVIDENCE: 2.


Asunto(s)
Implantes Absorbibles , Tornillos Óseos , Hallux Valgus/cirugía , Magnesio/química , Osteotomía/instrumentación , Titanio/química , Adulto , Anciano , Femenino , Estudios de Seguimiento , Hallux Valgus/diagnóstico por imagen , Humanos , Imagen por Resonancia Magnética/métodos , Masculino , Huesos Metatarsianos/cirugía , Persona de Mediana Edad , Variaciones Dependientes del Observador , Osteotomía/métodos , Rango del Movimiento Articular/fisiología , Medición de Riesgo , Estadísticas no Paramétricas , Factores de Tiempo , Resultado del Tratamiento
14.
Arch Orthop Trauma Surg ; 138(10): 1359-1363, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29934820

RESUMEN

BACKGROUND: With ankle arthritis often affecting young patients, joint-sparing treatments instead of total joint replacement should be considered. Only a few implants were specially developed for supramalleolar osteotomies (SMOT). This study was performed to analyse the stability of different implants and their appropriateness for SMOT. METHODS: Twenty-five bone models (Sawbone Europe, Malmö, Sweden) were used for biomechanical testing. SMOT were performed as a uniplanar osteotomy, leaving 5 mm of lateral bone intact with a standardized gap of 8 mm. Five different plates commonly used for SMOT were assessed. For axial stability, the constructs were tested during 100 cycles for each load (150N and 800N) at a rate of 0.5 Hz. For rotational stability, each construct was subject to 100 cycles of 5 Nm torque at a rate of 0.25 Hz, performing three runs with an axial preload of 0N, 150N, or 800N. Ultimate axial load was performed for one-half and ultimate rotational load was performed for the other half of the constructs. In addition, the stiffness of the different constructs after failure was tested. RESULTS: All constructs showed high stability and could be tested until maximum cyclic load. There was no significant difference between the five plates, neither for stiffness (axial or rotational) nor for failure load (axial or rotational). One plate indicated superiority in axial failure testing without any significant difference. CONCLUSION: All implants could be tested until maximum load. The intact hinge apparently provides enough support to compensate for lower moment of inertia of some plates. LEVEL OF EVIDENCE: Not applicable.


Asunto(s)
Articulación del Tobillo/cirugía , Placas Óseas , Ensayo de Materiales , Osteotomía , Tibia/cirugía , Fenómenos Biomecánicos , Humanos , Modelos Anatómicos , Estrés Mecánico
15.
J Foot Ankle Surg ; 56(4): 788-792, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28633778

RESUMEN

Osteochondral defects (OCDs) of the talus remain a surgical challenge, especially after failed primary treatment. The aim of the present study was to examine the clinical outcomes after HemiCAP® implantation for OCDs of the medial talar dome after failed previous surgery. Our retrospective study included 11 patients, who had undergone surgery from June 2009 to September 2012 for an OCD of the medial talar dome and received a HemiCAP® on the talus after failed previous surgery for OCD. The data were acquired using patients' medical records and standardized questionnaires, including the Foot and Ankle Outcome Score (FAOS), University of California at Los Angeles (UCLA) activity score, EQ-5D, numerical rating scale (NRS), and Short-Form 36-item Health Survey (SF-36). Using these scores, the possibility of returning to work and sports was determined. Any complications and the need for revision surgery were recorded. One patient refused to participate in the study, leaving 10 patients for evaluation. The mean age was 47.64 ± 10.97 years. The mean follow-up period was 43.5 ± 35.51 months. The FAOS and SF-36 subscale scores and the EQ-5D and UCLA activity scores did not improve significantly (p < .05). The mean postoperative pain score on the NRS improved significantly from 6.6 ± 1.77 preoperatively to 5.1 ± 2.02 postoperatively (p < .05). A greater body mass index led to worse postoperative outcomes with higher scores on the pain-NRS and less satisfaction (p < .05). Ten revisions for ongoing pain were performed in 7 patients (70.0%) within a mean of 28.4 ± 13.35 months of the initial procedure, and 6 patients (60%) indicated they would undergo surgery again. The results of the present study have shown that implantation of the HemiCAP® as a salvage procedure for OCDs of the talus is challenging and does not consistently lead to good clinical results. Also, overweight patients appear to have an increased risk of postoperative dissatisfaction and persistent ankle pain.


Asunto(s)
Articulación del Tobillo/cirugía , Enfermedades de los Cartílagos/cirugía , Cartílago Articular , Fijadores Internos , Astrágalo/cirugía , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reoperación , Estudios Retrospectivos , Resultado del Tratamiento
16.
Arch Orthop Trauma Surg ; 136(12): 1753-1759, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-27734146

RESUMEN

INTRODUCTION: The diagnostic algorithm in cases of assumed low-grade infection after total knee arthroplasty is discussed controversial. The aim of this study was to evaluate the reliability of neosynovium biopsies via knee arthroscopies in predicting a periprosthetic knee joint infection (PJI). METHODS: From 2010 to 2015, 56 consecutive patients received a diagnostic arthroscopy of the knee joint by reason of an assumed PJI. In 34 cases, a revision arthroplasty was performed after the diagnostic arthroscopy. The microbiologic and histologic results from neosynovium biopsies were compared to intraoperative findings of the consecutively performed revision arthroplasty. RESULTS: The arthroscopic neosynovium biopsies had a sensitivity of 0.88 (0.47-1.0 95 % confidence interval), a specificity of 0.88 (0.7-0.98), a positive predictive value of 0.7 (0.35-0.93), and a negative predictive value of 0.96 (0.79-1.0). The accuracy was 0.88. We determined a higher sensitivity of neosynovium biopsies compared to C-reactive protein (p = 0.038) and white blood cell count (p < 0.001) in serum. The itemized evaluation of histologic results showed a significant higher sensitivity compared to microbiologic results (p = 0.045) and a higher accuracy. CONCLUSIONS: The analysis of arthroscopic neosynovium biopsies can be helpful to verify or exclude a PJI in selected patients. Especially, histologic assessment showed a high accordance with final results. Level of evidence IV, retrospective study.


Asunto(s)
Artritis Infecciosa/diagnóstico , Artroplastia de Reemplazo de Rodilla/efectos adversos , Artroscopía/métodos , Biopsia/métodos , Articulación de la Rodilla/diagnóstico por imagen , Infecciones Relacionadas con Prótesis/diagnóstico , Membrana Sinovial/patología , Anciano , Artritis Infecciosa/etiología , Proteína C-Reactiva/análisis , Femenino , Humanos , Articulación de la Rodilla/cirugía , Masculino , Infecciones Relacionadas con Prótesis/etiología , Reproducibilidad de los Resultados , Estudios Retrospectivos
17.
Arch Orthop Trauma Surg ; 136(4): 457-62, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26887665

RESUMEN

INTRODUCTION: Tibiocalcaneal (TC) arthrodesis is a limb salvage method for patients with severe deformities combined with necrosis and/or luxation of the talus. The aim of this study was to examine the clinical and radiological outcome of TC arthrodesis. MATERIALS AND METHODS: This retrospective study identified 12 patients with luxation and/or necrosis of the talus, due to charcot neuroarthropathy (83.3 %) or traumatic injuries (16.7 %). All patients underwent TC arthrodesis by an external fixator or nail arthrodesis. The mean follow up was 18 (6-36) months with a mean age of 51.3 (30-66) years. The data were collected using the AOFAS score as well as clinical and radiological examination during regular follow up. RESULTS: Seven (58.3 %) patients were treated with an external fixator, four (33.3 %) with nail arthrodesis and one (8.3 %) patient rejected both fixation methods. Four (100 %) patients achieved radiological and clinical bone union after nail arthrodesis and four (57.1 %) patients after external fixation. Three (42.9 %) patients treated by an external fixator showed a radiological moderate bone fusion, but a stable, asymptomatic non-union. One (8.3 %) case ended up in transfemoral amputation. Eleven patients (91.7 %) regained independent mobilization. The mean AOFAS score improved from 24.3 preoperatively to 66.7 postoperatively (p < 0.05). The postoperative satisfaction rate was good to excellent in 83.3 %. CONCLUSION: TC arthrodesis is a promising and effective method for the treatment of severe ankle deformities with talus luxation. It allows patient's return to mobility with good to excellent patient satisfaction.


Asunto(s)
Traumatismos del Tobillo/cirugía , Articulación del Tobillo/cirugía , Artrodesis/métodos , Enfermedad de Charcot-Marie-Tooth/cirugía , Traumatismos de los Pies/cirugía , Recuperación del Miembro/métodos , Astrágalo/cirugía , Adulto , Anciano , Articulación del Tobillo/patología , Artrodesis/instrumentación , Enfermedad de Charcot-Marie-Tooth/patología , Femenino , Estudios de Seguimiento , Humanos , Luxaciones Articulares/cirugía , Recuperación del Miembro/instrumentación , Masculino , Persona de Mediana Edad , Necrosis/cirugía , Estudios Retrospectivos , Astrágalo/lesiones , Astrágalo/patología , Resultado del Tratamiento
18.
J Foot Ankle Surg ; 55(3): 522-8, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26898396

RESUMEN

Charcot neuropathy (CN) is a severe joint disease that makes surgical planning very challenging, because it is combined with ankle instability, serious deformities, and recurrent ulceration. The aim of the present study was to examine the rate of bone fusion after external or internal fixation in patients with CN. We retrospectively examined 58 patients with CN who had undergone reconstruction of the ankle either with tibiotalocalcaneal or tibiocalcaneal arthrodesis. The mean age was 59.1 (range 26 to 81) years at surgery. Of the 58 patients, 38 were treated using intramedullary nail arthrodesis and 19 using an external fixator (1 patient received neither). At a mean follow-up period of 31.3 (range 12 to 57) months, limb salvage and bone fusion had been achieved in 94.83%. The mean time to bone fusion was 12 (range 6 to 18) months. Three patients (5.2%) required a more proximal amputation. All but these 3 patients gained independent mobilization in custom feet orthoses or off the shelf orthoses. Of the 58 patients in the present cohort, 56 (96.6%) would undergo surgery again. In conclusion, internal and external fixation both lead to promising results in the treatment of CN. Internal fixation should be preferred when no indications of ulcer or infection are present.


Asunto(s)
Articulación del Tobillo/cirugía , Artrodesis/métodos , Artropatía Neurógena/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Algoritmos , Amputación Quirúrgica , Articulación del Tobillo/diagnóstico por imagen , Artropatía Neurógena/diagnóstico por imagen , Clavos Ortopédicos , Fijadores Externos , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/cirugía , Radiografía , Estudios Retrospectivos , Resultado del Tratamiento
19.
Arch Orthop Trauma Surg ; 135(6): 871-7, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25877013

RESUMEN

PURPOSE: When performing unicondylar knee arthroplasty (UKA), the surgeon can choose between two fundamentally different designs: a mobile-bearing (MB) inlay with high conformity, or a low-conformity, fixed bearing (FB) inlay. There is an ongoing debate in the orthopaedic community about which design is superior. To date, there have been no comparative biomechanical studies regarding each system's effects on the quadriceps force and the medial contact pressure. The purpose of this study was to investigate these alterations in vitro before and after UKA with two prosthesis systems, representing the MB and FB designs. METHODS: FB and MB unicondylar knee prosthesis designs were tested in sequence under isokinetic extension in an in vitro simulator. In each case, the required quadriceps extension force was determined before and after implantation of a medial UKA. Furthermore, the tibiofemoral contact pressures were evaluated for both prosthesis designs. RESULTS: The quadriceps force maximum was achieved at 106° and 104° of flexion with the FB and MB designs, respectively. Implantation of the FB UKA resulted in a significant increase in the necessary maximum quadriceps force (p = 0.006). In addition, implantation of the MB UKA resulted in a significantly higher extension force (p = 0.03). The difference between the two groups was statistically significant in deep flexion (p = 0.03), with higher forces in MB UKA. CONCLUSION: The MB design showed significantly increased quadriceps extension force compared with the FB inlay in deep flexion. Although the FB design showed higher maximum peak pressures concentrated on a smaller area, the pressure introduction in deep flexion was lower, compared to MB inserts.


Asunto(s)
Artroplastia de Reemplazo de Rodilla/métodos , Articulación de la Rodilla/fisiopatología , Prótesis de la Rodilla , Rango del Movimiento Articular/fisiología , Anciano , Fenómenos Biomecánicos , Cadáver , Humanos , Articulación de la Rodilla/cirugía , Persona de Mediana Edad , Diseño de Prótesis
20.
Orthop Rev (Pavia) ; 16: 120051, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39258011

RESUMEN

Background: Ligamentous lesions of the ankle joint are common. Isolated medial ligament injuries are rare but are often associated with lateral ligament injuries, isolated medial ligament lesions are often overlooked. The present study aimed to evaluate the clinical and functional differences in the outcomes of isolated lateral and combined medial and lateral ligament reconstruction. The study is based on patient-reported outcome measurements and motion sensor technology to assess these outcomes. Objective: The purpose of this study was to compare the clinical and functional outcomes of isolated lateral and combined lateral and medial ankle ligament reconstruction. Methods: From December 2014 to August 2018, 111 patients underwent either isolated lateral ligament (LG) or medial and lateral ligament (MLG) reconstruction. Of the 104 patients meeting the inclusion criteria, 49 had LG and 55 had MLG reconstruction. Outcome measures included the Short Form-36 Health Survey SF-36, Foot and Ankle Outcome Score (FAOS), Foot and Ankle Ability Measure (FAAMG), Tegner Activity Scale, the European Foot and Ankle Society (EFAS), American Orthopaedic Foot and Ancle Society (AOFAS) hindfoot score, and the Karlsson Peterson Score. Mobility and stability were assessed using the Ortheligent™ motion sensor for both healthy and treated ankles. Results: While there were no significant differences in outcome scores between the groups, overall scores improved after treatment (p >0.00). Notably LG showed improved movement, with better dorsal extension measured by the Sensor (p ÷ 0.02). The sensor's results correlated significantly with FAOS subscales for pain (p ÷0.05), stiffness (p ÷ 0.01), ADL (p ÷0.02), and sports (p >0.00). Conclusion: Postoperative results, regardless of LG or MLG, showed significant subjective well-being improvement. LG's advantages were highlighted by a significant improvement in dorsal extension, supported by correlated results from a portable motion sensor assessing ankle stability.

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