[Translated article] Validation of patient-specific 3D impression models for pelvic oncological orthopedic surgery.

Introduction: Pelvic ring tumours pose a challenge due to the difficulty in obtaining adequate surgical margins. Tools such as surgical navigation or 3D printing for the fabrication of patient-specific surgical positioning templates help in preoperative planning and intraoperative execution. Their correct positioning is essential in complex locations such as the pelvis, so it is necessary to identify positioning errors.

Validation of patient-specific 3D impression models for pelvic oncological orthopedic surgery.

Introduction: Pelvic ring tumors pose a challenge due to the difficulty in obtaining adequate surgical margins. Tools such as surgical navigation or 3D printing for the fabrication of patient-specific surgical positioning templates help in preoperative planning and intraoperative execution. Their correct positioning is essential in complex locations such as the pelvis, so it is necessary to identify positioning errors.

The knee prosthesis constraint dilemma: Biomechanical comparison between varus-valgus constrained implants and rotating hinge prosthesis. A cadaver study.

The real degree of constriction of rotating hinge knee (RHK) and condylar constrained prostheses (CCK) is a matter of discussion in revision knee arthroplasty. The objectives of this study are to compare the tibial rotation of both implants and validate the use of inertial sensors with optical tracking system as movement measurement tools. A total of 16 cadaver knees were used.

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Synovial oedema is a frequent complication in arthroscopic procedures performed with normal saline as the irrigating fluid. The authors have studied the effect of saline solution, Ringer lactate, 5% Dextran and 10% Dextran in normal saline on 12 specimens of human synovial membrane. They found that 10% Dextran in normal saline decreases the water content of the synovium without causing damage, and recommend this solution for procedures lasting longer than 30 minutes.

[Articular irrigation in arthroscopy].

Synovial oedema is a frequent complication in arthroscopic procedures performed with normal saline as the irrigating fluid. The authors have studied the effect of saline solution, Ringer lactate, 5% Dextran and 10% Dextran in normal saline on 12 specimens of human synovial membrane. They found that 10% Dextran in normal saline decreases the water content of the synovium without causing damage, and recommend this solution for procedures lasting longer than 30 minutes.