Preliminary outcomes of the cementless UNITED hip system for primary total hip arthroplasty at a minimum 2-year follow-up.

INTRODUCTION: This study aimed to report the initial results of the cementless UNITED hip system in primary total hip arthroplasty (THA) with a minimum follow-up of 2 years. METHODS: We retrospectively studied a consecutive series of 203 cementless THAs in 180 patients operated between 2015-2017. We included 89 female and 91 male patients with a mean age of 67 (28 to 89) years. The mean follow-up was 40 (29 to 62) months. Clinical outcome scores and radiographs were measured. Survival was calculated defining failure as the need for any further femoral or acetabular revision, irrespective of the reason. RESULTS: No femoral component loosening was detected. One patient had a Vancouver-B1 intraoperative periprosthetic femoral fracture treated with implant retention and cerclage wires. Two acetabular components were revised for aseptic loosening. Three patients suffered an acute infection treated with debridement, antibiotics, and implant retention. The mean Merle d'Aubigné et Postel scores improved from 13 (4 to 16) points preoperatively to 17 (12 to 18) points at the latest follow-up (p < 0.001). At a mean time of 40 months of follow-up, the survival was 99% and 100% for the acetabular and the femoral components, respectively. CONCLUSION: This cementless design showed excellent preliminary outcomes in terms of fixation and patient satisfaction, comparable to that of other well-known similar systems.

Sequelae of late diagnosis and treatment of developmental dysplasia of the hip: case report and surgical technique description. / [Secuela de diagnóstico tardío y tratamiento en displasia del desarrollo de la cadera: reporte de caso y descripción de técnica quirúrgica.]

Developmental hip dysplasia (DHD) is a common entity that affects 4 out of every 1000 live births and is a recognized cause of secondary hip osteoarthritis despite routine perinatal controls. In most patients, the early diagnosis of the pathology allows an evolution without sequelae. However, in the basis that patients diagnosed late and with multiple surgeries are patients with open physis, ossification nuclei present and previous surgeries in the approach area, the late diagnosis represents a real challenge for the orthopedist. We report below the case of a patient treated in our center since birth, who evolved with complications associated with late diagnosis and surgical interventions, describing rescue surgery performed at 12 years of age and finally highlighting the importance of routine perinatals and early diagnosis of DHD.

La displasia del desarrollo de la cadera (DDC) es una entidad frecuente que afecta a 4 de cada 1000 nacidos vivos y es una causa reconocida de artrosis de cadera secundaria a pesar de los controles perinatales de rutina. En la mayoría de los pacientes, el diagnóstico precoz de la patología permite una evolución sin secuelas. Sin embargo, el diagnóstico tardío con múltiples intervenciones representa un verdadero reto para el ortopedista, ya que se trata de pacientes con fisis abierta, nucleos de osificación presentes y cirugías previas en la zona de abordaje. Se reporta a continuación el caso de una paciente tratada en nuestro centro desde su nacimiento, que evolucionó con complicaciones asociadas al diagnóstico tardío y a las intervenciones quirúrgicas, describiendo la cirugía de salvataje realizada a los 12 años de edad y destacando finalmente la importancia de los controles perinatales de rutina y el diagnóstico precoz de la DDC.

Rotura traumática simultánea y bilateral del tendón del cuádriceps en un paciente fisicoculturista: informe de caso y revisión de la literatura / Simultaneous bilateral traumatic quadriceps tendon rupture in a bodybuilding patient: case report and literature review

La rotura traumática, simultánea y bilateral del tendón cuadricipital es una lesión infrecuente, generalmente asociada a otras enfermedades sistémicas tales como insuficiencia renal o trastornos endocrinos. Presentamos el caso de un varón sano y atleta de 38 años que sufrió esta lesión mientras realizaba una sentadilla en el gimnasio. (AU)

The traumatic bilateral and simultaneous quadriceps tendon rupture is a rare injury, usually associated with other systemic diseases such as renal insufficiency or endocrine disorders. We present the case of a 38-year-old healthy male athlete who sustained this injury while performing a squat at the gym. (AU)

Long-term Outcome of Unconstrained Primary Total Hip Arthroplasty in Ipsilateral Residual Poliomyelitis.

Incapacitating articular sequelae in the hip joint have been described for patients with late effects of poliomyelitis. In these patients, total hip arthroplasty (THA) has been associated with a substantial rate of dislocation. This study was conducted to evaluate the long-term clinical and radiologic outcomes of unconstrained THA in this specific group of patients. The study included 6 patients with ipsilateral polio who underwent primary THA between 1985 and 2006. Patients with polio who underwent THA on the nonparalytic limb were excluded. Mean follow-up was 119.5 months (minimum, 84 months). Clinical outcomes were evaluated with the modified Harris Hip Score (mHHS) and the visual analog scale (VAS) pain score. Radiographs were examined to identify the cause of complications and determine the need for revision surgery. All patients showed significantly better functional results when preoperative and postoperative mHHS (67.58 vs 87.33, respectively; P=.002) and VAS pain score (7.66 vs 2, respectively; P=.0003) were compared. Although 2 cases of instability were diagnosed, only 1 patient needed acetabular revision as a result of component malpositioning. None of the patients had component loosening, osteolysis, or infection. Unconstrained THA in the affected limb of patients with poliomyelitis showed favorable long-term clinical results, with improved function and pain relief. Nevertheless, instability may be a more frequent complication in this group of patients compared with the general population. [Orthopedics. 2017; 40(2):e255-e261.].