Mechanical failure of distal femur mega prosthesis due to polyaryl-ether-ether-ketone (PEEK) hinge component.

Background: Polyaryl-ether-ether-ketone (PEEK) has gained popularity as a substrate for orthopaedic hardware due to its desirable properties such as heat and deformation resistance, low weight, and ease of manufacturing. However, we observed a relatively high failure rate of PEEK-based hinges in a distal femur reconstruction system. In this study, we aimed to evaluate the proportion of patients who experienced implant failure, analyse the mechanism of failure, and document the associated clinical findings.

The influence of femoral lytic tumors segmentation on autonomous finite element analysis.

Background: The validated CT-based autonomous finite element system Simfini (Yosibash et al., 2020) is used in clinical practice to assist orthopedic oncologists in determining the risk of pathological femoral fractures due to metastatic tumors. The finite element models are created automatically from CT-scans, assigning to lytic tumors a relatively low stiffness as if these were a low-density bone tissue because the tumors could not be automatically identified.

Does cryotherapy decrease the local recurrence rate in the treatment of an aneurysmal bone cyst? A comparative assessment.

Curettage with or without the use of adjuvants is the standard of care in the treatment of an aneurysmal bone cyst (ABC). Historically, our approach combined curettage, high-speed burr drilling, and cryoablation. However, treatments varied based on age, tumor location, and surgeon preference.

Favorable outcomes of navigated percutaneous ablation and cementoplasty of bone metastasis in the extremities and pelvis-a case series of 13 cases.

Objectives: Palliative treatment options for bone metastasis are limited, especially in cases where standard protocols have already failed. The purpose of this study was to evaluate the efficacy and safety of percutaneous ablation, either by cryoablation or radiofrequency, combined with percutaneous cementoplasty using cone-beam guided navigation. The objective was to relieve symptoms and improve functionality in patients suffering from pain secondary to bone metastases, as well as evaluate local disease progression post ablation.

Internal Hemipelvectomy for primary bone sarcomas using intraoperative patient specific instruments- the next step in limb salvage concept.

Background: During pelvic Sarcoma resections, Surgeons often struggle to obtain negative margins while minimizing collateral damage and maintaining limb function. These complications are usually due to the complex anatomy of the pelvis. Here we present an accurate 3D surgical approach, including pre-operative printing of models and intraoperative patient-specific instruments (PSIs) for optimizing pelvic sarcoma resections.

Three dimensional printing as an aid for pre-operative planning in complex cases of total joint arthroplasty: A case series.

Purpose: Digital templating is an essential aspect of pre-operative planning for total joint arthroplasty procedures. For complex cases of joint reconstruction, the standard templating software is insufficient to achieve the desired accuracy. 3D printing significantly aids the pre-operative planning in complicated cases of joint reconstruction and offers immense potential towards improving outcomes in these cases.

Intercalary and geographic lower limb tumor resections with the use of 3D printed Patient Specific Instruments- when less is more.

Background: Primary bone sarcomas are associated with critically sized bone defects and require complete resection with negative margins. Recent advancements in health care have pioneered novel approaches such as the implementation of 3D surgical technologies. This study presents oncological and functional outcomes following tumor resections of long bones with the use of customized 3D-printed Patient Specific Instruments (PSIs).

Hepatitis C is an Independent Risk Factor for Perioperative Complications and Nonroutine Discharge in Patients Treated Surgically for Hip Fractures.

Objective: To evaluate the relationship between noncirrhotic hepatitis C virus (HCV) infection, perioperative complications, and discharge status in patients undergoing surgical procedures for hip fractures.

Methods: A retrospective epidemiological study was performed, querying the National Hospital Discharge Survey. Patients were selected using the International Classification of Diseases-9 diagnostic codes for hip fracture and primary procedural codes for open reduction internal fixation, hemiarthroplasty, total hip arthroplasty, or internal fixation.

Anxiolytic medication as an adjunct to morphine analgesia for acute low back pain management in the emergency department: a prospective randomized trial.

Study Design: Prospective, single-blinded, and randomized clinical trial.

Objective: This study evaluates the added benefit of promethazine administration as an anxiolytic adjunct to morphine analgesia in reducing acute low back pain (LBP) compared with morphine alone.

Summary Of Background Data: Acute LBP is one of the most common reasons for emergency department (ED) visits.