A Radiologic Triangle Sign for Percutaneous Adductor Tendon Release (PATR): Cadaveric Study and Case Series.

Background: Combining osteotomies and soft tissue procedures is believed to reduce sesamoids in their anatomical position and maintain long-term correction when treating hallux valgus deformity. This study determines if a radiologic association exists between a radiolucent sign and a full percutaneous adductor tendon release (PATR), including a cadaveric study and a consecutive case series. Another aim was to determine the intra- and interobserver reliability of these observations. Methods: A prospective observational study was made between 2018 and 2019. First, a PATR was done on cadaveric specimens and, after the procedures, dissected to correlate what was seen fluoroscopically. The clinical group included 39 feet that presented mild-to-moderate HV deformity and were treated with percutaneous osteotomies associated with PATR. Results: Observers 1 and 2 saw a radioscopic radiolucent sign in 100% of cadavers and the patient population. They also observed a triangle-shaped image with an incidence of 75%, which we have named the "triangle sign." Conclusion: The triangle sign may be helpful in the intraoperative confirmation of PATR and latero-plantar capsule release using this percutaneous technique. Level of Evidence: Level II, development of diagnostic criteria.

The ATFL inferior fascicle, the CFL and the PTFL have a continuous footprint at the medial side of the fibula.

PURPOSE: Knowledge of the complex anatomy of the lateral ankle ligaments is essential to understand its function, pathophysiology and treatment options. This study aimed to assess the lateral ligaments and their relationships through a 3D view achieved by digitally marking their footprints. METHODS: Eleven fresh-frozen ankle specimens were dissected. The calcaneus, talus and fibula were separated, maintaining the lateral ligament footprints. Subsequently, each bone was assessed by a light scanner machine. Finally, all the scans were converted to 3D polygonal models. The footprint areas of the talus, calcaneus and fibula were selected, analysed and the surface area was quantified in cm2. RESULTS: After scanning the bones, the anterior talofibular ligament inferior fascicle (ATFLif), calcaneofibular ligament (CFL) and posterior talofibular ligament (PTFL) footprints were continuous at the medial side of the fibula, corresponding to a continuous footprint with a mean area of 4.8 cm2 (± 0.7). The anterior talofibular ligament (ATFL) footprint on the talus consisted of 2 parts in 9 of the 11 feet, whilst there was a continuous insertion in the other 2 feet. The CFL insertion on the calcaneus was one single footprint in all cases. CONCLUSION: The tridimensional analysis of the lateral ligaments of the ankle demonstrates that the ATFLif, CFL and PTFL have a continuous footprint at the medial side of the fibula in all analysed specimens. These data can assist the surgeon in interpreting the ligament injuries, improving the imaging assessment and guiding the surgeon to repair and reconstruct the ligaments in an anatomical position.

Tendones peroneos: una revisión contemporánea / Peroneal tendons. Contemporary update

La patología de peroneos es compleja y frecuentemente subdiagnosticada. El conocimiento detallado de la anatomía, biomecánica y fisiopatología es fundamental para realizar un correcto diagnóstico y tratamiento. El objetivo de este artículo es revisar la información más actualizada sobre la patología de los tendones peroneos (tendinopatía, inestabilidad y rotura).

Pathology of the peroneal tendons is complex and often underdiagnosed. Knowledge of anatomy, biomechanics, and physiopathology is necessary for diagnosing and treating this condition. The objective of this article is to review the most updated information regarding peroneal tendon pathology (tendinopathy, dislocation/subluxation, and tears), which may help managing patients with lateral pain of the foot and ankle.

Midterm Outcomes of Sliding Distal Metatarsal Minimally Invasive Osteotomy to Treat Bunionette Deformity.

BACKGROUND: Bunionette deformity is described as a painful bony prominence on the lateral aspect of the fifth metatarsal head. The present study prospectively assessed the clinical, functional, and radiographic outcomes of sliding distal metatarsal minimally invasive osteotomy (S-DMMO) used in a large series of patients with a midterm follow-up period. METHODS: From December 2015 to December 2018, we evaluated 74 feet (57 patients). Radiologic (4-to-5 intermetatarsal angle, fifth metatarsophalangeal angle, the fifth metatarsal head width, lateral deviation angle, fifth metatarsal length, medial displacement, and elevation), clinician-reported scores (AOFAS score, visual analog scale [VAS]) and patient-reported outcomes measure (Foot and Ankle Ability Measure [FAAM] activities of daily living [ADL], FAAM sports, Manchester-Oxford Foot Questionnaire [MOXFQ], and patient satisfaction survey) were included in the analysis. The time to bone union was also assessed. RESULTS: The average 4-to-5 intermetatarsal angle improved from 11.1 degrees preoperatively to 4.5 degrees postoperatively (P < .001), whereas the average fifth metatarsophalangeal angle improved from 15.7 degrees preoperatively to 4.8 degrees postoperatively (P < .001). The lateral deviation angle was found to be 2.2 degrees. The fifth metatarsal length decreased from 66.6 to 64.3 mm postoperatively. The average initial medial displacement was 4.67 mm preoperatively and 4.54 mm at final follow-up. The elevation of the fifth metatarsal head was 1.08 mm. The American Orthopaedic Foot & Ankle Society score improved from 54.3 ± 20.86 points preoperatively to 93.4 ± 17.3 (P < .001). VAS score decreased from 7.9 to 0.7 (P < .001). Also, FAAM ALD, FAAM Sport, and MOXFQ showed statistically significant differences (P < .001) between preoperative and postoperative periods. Patients found the procedure excellent in 89.1% of cases, very good in 5.4%, and good in 5.4%. Bone union was obtained at 8.1 weeks. CONCLUSION: The most important finding of the present study is that S-DMMO showed improvement in function and pain associated with a high satisfaction rate. Also, we found substantial capacity to correct deformities and a low incidence of complications. LEVEL OF EVIDENCE: Level IV, case series.

Percutaneous, intra-articular, chevron osteotomy (PeICO) for the treatment of mild-to-moderate hallux valgus: a case series.

PURPOSE: Treatment for hallux valgus (HV) remains challenging. Third-generation percutaneous procedures try to reproduce chevron-type osteotomies to replicate their benefits, such as intrinsic stability and reproducibility. We report the first results using a percutaneous, intra-articular, chevron osteotomy (PeICO) technique that mimics the classic intra-articular open chevron procedure, associated with a percutaneous adductor tendon release (PATR) for the treatment of mild-to-moderate HV. METHODS: From May 2015 to October 2018, a total of consecutive 114 feet (74 patients) were included. Primary outcome measures included radiographic (hallux valgus and intermetatarsal angles) and clinical parameters such as visual analog scale (VAS), FAAM Activities of Daily Living (ADL), and FAAM Sport, AOFAS Score, and MOXFQ, preoperatively and at final follow-up (Minimum 18 months). A patient satisfaction survey was also performed. Pronation and length of the first metatarsal were also assessed. Secondary outcomes included fluoroscopic time, length of surgery, complications, recurrence, and re-operation rates. RESULTS: At 24.09 months on average, the AOFAS score improved from 52.1 points preoperatively to 91.1 (p < 0.001) at the latest follow-up. VAS decreased from 6.3 to 1. Also, FAAM ALD, FAAM Sport, and MOXFQ showed statistically significant differences (p < 0.001) when comparing pre-operative and post-operative periods. Patients found the procedure to be excellent in 82% and very good in 13.5% of cases. Our global complication and re-operation rates were 5.26% and 3.5% (screw removal), respectively. CONCLUSION: PeICO combined with PATR proved to be a safe, reliable, and effective technique for the correction of mild-to-moderate HV deformity.

Arthroscopic anterior cruciate ligament repair with and without suture augmentation: technical note.

Anterior cruciate ligament (ACL) tears are routinely treated with an ACL reconstruction. This is based on historical literature reporting high failure rates after ACL repairs in addition to the limited healing potential of the ACL. Recently, improved understanding of pathophysiology of ligamentous healing has led to increasing interest in treating proximal avulsions with excellent tissue quality in the acute setting, as this technique allows for ACL healing. Potential advantages of ACL repair include preservation of native proprioceptive and kinematics of the knee, avoidance of graft harvesting morbidity and the possibility to perform a primary ACL reconstruction in case of failure. As a consequence, several techniques for ACL repair have been proposed that can be performed in isolation or with suture augmentation. The primary aim of this technical note is to describe step-by-step the ACL repair technique with and without suture augmentation. The secondary aim of the current study is to review the indications, patient selection and advantages of the technique.

Percutaneous Lateral Release in Hallux Valgus: Anatomic Basis and Indications.

In the last decade, minimally invasive or percutaneous surgery has evolved rapidly through the development of novel techniques. Treatment of hallux valgus deformity is one of the indications for percutaneous surgery, both for bony and soft tissue correction. The release of the structures on the lateral part of the first metatarsophalangeal joint (lateral release) is one of the best indications for percutaneous surgery in the forefoot. In this article, a detailed description of the anatomy of the metatarsophalangeal joint is provided, along with the indications and tips to perform a safe percutaneous lateral release.

Percutaneous, Intra-articular, Chevron Osteotomy (PeICO) for the Treatment of Hallux Valgus: A Cadaveric Study.

BACKGROUND: Percutaneous surgery is experiencing sustained growth based on third-generation techniques. This cadaveric study was designed with the main goal of exploring the risk of iatrogenic tendon and neurovascular lesions and defining the safe zones in a percutaneous, intra-articular, chevron osteotomy (PeICO) procedure, as well as assessing the accuracy of the osteotomy itself. METHODS: Eight feet from below-knee fresh-frozen specimens were selected. After the procedure, the specimens were dissected, and structures were inspected for damage. RESULTS: The results of the safety measurements were as follows: (1) distance between portal 1 (P1) and the lateral border of the extensor hallucis longus (EHL) tendon: average 17.6 mm (range 12.7-21.3); (2) distance between P1 and the dorsomedial digital nerve (DMDN): average 7.2 mm (range 1.6-10.4); (3) distance between P1 and the metatarsophalangeal joint: average 15.7 mm (range 9.4-20.5); distance between portal 2 (P2), or the osteosynthesis portal, and the metatarsophalangeal joint: average 25.5 mm (range 22-30.4); distance between P2 and the lateral border of the EHL tendon: average 12.7 mm (range 8-16.7); and distance between P2 and the DMDN: average 4.1 mm (range 1.7-8.2). There were no iatrogenic injuries. The osteotomy angulation in the sagittal plane (reproducibility) average was 85.6 degrees. CONCLUSION: There were no iatrogenic injuries on this cadaveric study of PeICO. CLINICAL RELEVANCE: This study will help orthopedic surgeons understand the risks of performing percutaneous surgery by mimicking an accepted open technique (chevron).

Characterization of a bipartite medial cuneiform: micro-CT and anatomical study / Caracterización de un cuneiforme medial bipartito: micro-CT y estudio anatómico

A bipartite medial cuneiform is an anatomical variant consisting in a horizontal division of the bone. Previous descriptions of the joint type, obtained from archaeological material or clinical reports, are unclear. This study was conducted in a fresh-frozen left foot, which allowed studying the morphology of the ligaments after anatomical dissection. In addition a Micro-CT analysis was performed to elucidate the osseous structure supporting the articular surfaces. A complex ligamentous system was found between the two halves of the bipartite medial cuneiform. Two articular surfaces were observed between the two components. Hyaline cartilage was observed at the posterior surface, while fibrous tissue was found at the anterior surface. Micro-CT analysis revealed different osseous structures for each articular surface, thus proving the existence of two joint types. The finding of a bipartite medial cuneiform in a fresh-frozen specimen allowed us to perform an analysis of the soft-tissues and articular surfaces that shows the presence of hyaline cartilage and articular ligaments in the diarthrodial joint as well as the fibrous component of the synfibrosis. Micro-CT analysis further reinforces our morphological findings. Our results prove that two different joint types exist, which could help explaining the disparity of descriptions in the literature.

El cuneiforme medial bipartito es una variación anatómica que consiste en una división horizontal del hueso. Las descripciones previas del tipo de articulación entre los dos fragmentos, obtenidas de material arqueológico o de reportes clínicos, son heterogéneas. Este estudio se llevó a cabo en un pie izquierdo disecado en fresco, lo que permitió analizar la morfología de los ligamentos. Adicionalmente se llevó a cabo un análisis con Micro-CT a fin de aclarar la estructura ósea de soporte de las superficies articulares. Un sistema ligamentoso complejo une las dos mitades del cuneiforme medial bipartito. Se observaron dos superficies articulares uniendo ambos componentes. En la superficie posterior se encontró cartílago hialino, en tanto que la superficie anterior presentaba tejido fibroso uniendo las superficies articulares. El análisis por Micro-CT mostró que la estructura ósea de soporte de cada una de las superficies articulares es diferente, confirmando la existencia de dos articulaciones distintas. El hallazgo de un cuneiforme medial bipartito en un espécimen fresco ha permitido el estudio de las partes blandas y superficies articulares, demostrando la presencia simultánea del cartílago hialino y los ligamentos propios de una diartrosis y del tejido fibroso propio de una sinfibrosis, lo que ha sido posteriormente corroborado por el análisis por Micro-CT. Nuestros resultados demuestran por tanto que se trata de dos articulaciones distintas, lo cual explica la disparidad de las descripciones en la literatura.