Reverse total shoulder arthroplasty (RSA) has emerged as a promising treatment option for rotator cuff tear arthropathy. However, concerns persist regarding horizontal rotational dysfunction after RSA. While many studies focus on improving external rotation after RSA, limited attention has been paid to internal rotation. In this technical note, we describe how to perform secondary pectoralis major transfer in a patient with residual internal rotation dysfunction after RSA.
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http://dx.doi.org/10.5397/cise.2024.00542 | DOI Listing |
J Prosthet Dent
December 2024
Professor, Department of Restorative Dentistry, University of Washington School of Dentistry, Seattle, Wash. Electronic address:
Statement Of Problem: The angled screw channel (ASC) design has been well accepted for implant prostheses. However, investigation into the behavior of the ASC connection is sparse.
Purpose: The purpose of this in vitro study was to assess the effect of cyclic loading on the internal connection of an ASC system compared with straight access systems by measuring reverse torque values (RTVs) and using microcomputed tomography (µCT) imaging.
Knee Surg Sports Traumatol Arthrosc
December 2024
Department of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany.
Purpose: To biomechanically evaluate a flat posterior cruciate ligament (PCL) reconstruction utilizing rectangular femoral bone tunnels.
Methods: Eight fresh-frozen human knee specimens were tested in a six-degrees-of-freedom robotic test setup. In each testing step, a force-controlled test protocol was performed, including 89 N posterior tibial translation (PTT) in neutral, internal and external rotation, from 0 to 90° of flexion.
JBJS Case Connect
October 2024
Department of Orthopaedic Surgery and Rehabilitation Medicine, University of Chicago, Chicago, Illinois.
Case: A 35-year-old man with morbid obesity sustained an ultra-low velocity (ULV) rotational knee dislocation secondary to a fall from standing. The patient was successfully treated using a subcutaneous knee-spanning internal fixator, the "INFIX" technique, which has previously been described for pelvic ring injuries.
Conclusion: This novel technique maintained the stable reduction of an ULV knee dislocation in a patient with morbid obesity until adequate healing was achieved.
Sci Rep
December 2024
Department of Orthopedic Surgery, Arthroscopy and Joint Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
The humeral head is the second most common anatomical site of osteonecrosis after the femoral head. Studies have reported satisfactory clinical outcomes after shoulder arthroplasty to treat osteonecrosis of the humeral head (ONHH). However, there are concerns regarding implant longevity in relatively young patients.
View Article and Find Full Text PDFPurpose: This study aimed to explore the potential application of NAO in guiding patients through rehabilitative exercises using external audiovisual stimuli, focusing on temporospatial control in terms of range of motion (ROM), execution time and movement smoothness.
Methods: This is a preliminary analysis involving ten healthy volunteers and two patients with shoulder musculoskeletal disorders. The protocol was developed in two phases (III and IV) with different ROM limits and including flexion-extension (FE), external-rotation (ER) and internal-rotation (IR) exercises, performed at two speeds and both with and without NAO assistance.
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