Comparable postoperative outcomes in patients treated with either open or arthroscopic trochleoplasty for patella dysplasia.

Background: The aim of this study was to compare the clinical and radiologic results of the arthroscopic and the open trochleoplasty techniques.

Methods: A total of 83 trochleoplasties in 83 patients were performed between 2014 and 2021 in one institution. Surgical indications for trochleoplasty were recurrent patellofemoral instability and a lateral trochlear inclination angle (LTI) ≤ 11˚ and a trochlear depth ≤ 6 mm.

Evaluation of FRAX in patients with periprosthetic fractures following primary total hip and knee arthroplasty.

The fracture risk assessment tool (FRAX) is a tool which calculates an individual 10-year fracture risk based on epidemiological data in patients with a risk of osteporosis. The aim of this study was to evaluate the value of FRAX to estimate the risk of postoperative periprosthetic fractures (PPF) in patients following with total hip and knee arthroplasty. 167 patients (137 periprosthetic fractures in total hip arthroplasty and 30 periprosthetic fractures in total knee arthroplasty) were included in this study.

The Patellar Instability Probability Calculator: A Multivariate-Based Model to Predict the Individual Risk of Recurrent Lateral Patellar Dislocation.

Background: Predicting the risk of recurrence is of great interest when counseling patients after primary lateral patellar dislocation (LPD).

Purpose: To investigate a multivariate model to predict the individual risk of recurrent LPD.

Study Design: Case-control study; Level of evidence, 3.

Arthroscopic findings and treatment of maisonneuve fracture complex.

Background: The Maisonneuve fracture complex (MFC) is a well-known lower leg injury. However, the optimal treatment is still not clear and there is limited data on concomitant injuries of cartilage. Therefore, the aim of our study was to report the incidence of incidental cartilage injuries and their management in arthroscopic treatment of MFC.

Reduction of Phantom Limb Pain and Improved Proprioception through a TSR-Based Surgical Technique: A Case Series of Four Patients with Lower Limb Amputation.

Four patients underwent targeted sensory reinnervation (TSR), a surgical technique in which a defined skin area is first selectively denervated and then surgically reinnervated by another sensory nerve. In our case, either the area of the lateral femoral cutaneous nerve or the saphenous nerve was reinnervated by the sural nerve. Patients were then fitted with a special prosthetic device capable of transferring the sense of pressure from the sole of the prosthesis to the newly wired skin area.

Patient-reported outcomes after primary rotating hinge total knee arthroplasty: a multi-centre clinical cohort study.

Purpose: Rotating hinge prostheses for total knee arthroplasty (TKA) are mostly used in revision setting; however, evidence on the use of these constrained devices in primary setting is scarce and inconsistent. Therefore, we aimed to evaluate the functional outcomes after third-generation rotating hinge implants in primary TKA with a minimal follow-up of two years in a large dual-centre observational retrospective clinical trial.

Methods: The hospital databases of two centres were searched for primary rotating hinge arthroplasty from January 2007 to January 2015.

The most influential papers in unicompartmental knee arthroplasty.

Purpose: Unicompartmental knee arthroplasty (UKA) is a treatment option for anteromedial osteoarthritis of the knee. The number of UKA has been increasing constantly worldwide in recent decades. The aim of this study was to determine the most frequently cited scientific articles addressing this subject and to establish a ranking of the 50 most influential papers.

Adolf Lorenz and the Lolita Armour Case.

Almost 120 years ago, in 1902, the American multimillionaire J. Ogden Armour invited the Austrian orthopaedic surgeon Adolf Lorenz, professor at the University of Vienna, to treat his daughter Lolita. Lolita was born premature in 1896 and spent the first months of her life in an incubator.

Microstructural analysis of subchondral bone in knee osteoarthritis.

Unlabelled: The results of this study show increased formation of bone in the subchondral areas in advanced stages of osteoarthritis of the knee. These changes seem to be influenced by mechanical factors.

Introduction: Subchondral bone changes seem to contribute to the progression of knee osteoarthritis (OA).

Failure after proximal humeral fracture osteosynthesis: a one year analysis of hospital-related healthcare cost.

Purpose: The issue of rising healthcare costs and limited resources is a topic of worldwide discussion over the last several decades. We hypothesized that failure of proximal humeral fracture osteosynthesis is presumed to be an important determinant in healthcare resources and related costs. The aim of this study was to calculate the total hospital-related healthcare cost of proximal humeral fracture osteosynthesis over one  year focusing on failure.

ACL reconstruction with adjustable-length loop cortical button fixation results in less tibial tunnel widening compared with interference screw fixation.

Purpose: To compare tunnel widening and clinical outcome after anterior cruciate ligament reconstruction (ACLR) with interference screw fixation and all-inside reconstruction using button fixation.

Methods: Tunnel widening was assessed using tunnel volume and diameter measurements on computed tomography (CT) scans after surgery and 6 months and 2 years later, and compared between the two groups. The clinical outcome was assessed after 2 years with instrumented tibial anteroposterior translation measurements, hop testing and International Knee Documentation Committee (IKDC), Lysholm and Tegner activity scores.

Fetal Rhabdomyoma of the upper Extremity in a 31-Year Old Patient: a Case Report.

Fetal rhabdomyomas (RM) are extremely rare benign mesenchymal tumours that occur primarily in the head and neck. This tumour exhibits immature skeletal muscle differentiation. The patients' median age is four years and surgical resection is the recommended treatment.

Body image, self-esteem, and quality of life in patients with primary malignant bone tumors.

Background: Patients with primary malignant bone tumors are facing different challenges in their everyday lives due to improved treatment and prolonged survival. This raises the question whether and to what extent their quality of life, body image, and self-esteem is affected by their disease. The aim of this retrospective study was to analyze the quality of life, body image and self-esteem of patients with primary malignant bone tumors compared to a healthy control group.

The accuracy of digital templating in uncemented total hip arthroplasty.

Introduction: Preoperative planning is an essential part of total hip arthroplasty (THA). It facilitates the surgical procedure, helps to provide the correct implant size and aims at restoring biomechanical conditions. In recent times, surgeons rely more and more on digital templating techniques.

Knee alignment in adolescents is correlated with participation in weight-bearing sports.

Purpose: Weight-bearing sports might influence the alignment of the lower extremities during growth. The relationship between participation in weight-bearing sports and the alignment of the lower extremities in adolescents has not been adequately studied yet. The aim of the study was to investigate whether sports participation during growth in early adolescence is correlated with the development of genu varum.

Tunnel widening after ACL reconstruction with aperture screw fixation or all-inside reconstruction with suspensory cortical button fixation: Volumetric measurements on CT and MRI scans.

Background: Tunnel widening after anterior cruciate ligament reconstruction (ACLR) is influenced by the surgical and fixation techniques used. Computed tomography (CT) is the most accurate image modality for assessing tunnel widening, but magnetic resonance imaging (MRI) might also be reliable for tunnel volume measurements. In the present study tunnel widening after ACLR using biodegradable interference screw fixation was compared with all-inside ACLR using button fixation, with tunnel volume changes being measured on CT and MRI scans.

Preparation techniques for all-inside ACL cortical button grafts: a biomechanical study.

Purpose: Performing all-inside anterior cruciate ligament reconstruction using cortical button fixation, the tendon graft has to be secured in a closed loop with sutures. In the present study, the graft secured with four sutures was compared with two reduced-suture material graft preparation techniques.

Methods: A bovine tendon graft folded over two adjustable-length loop cortical button devices was secured using the following techniques: 1, four buried-knot sutures; 2, two sutures on the tibial end only; and 3, two sutures on the tibial graft end with additional suspension on the tibial cortical button.