Triple nerve transfer for restoration of elbow flexion in C5-C6 traumatic brachial plexus injuries.

We retrospectively reviewed the outcome of triple nerve transfer, including reinnervation of brachioradialis and double nerve transfer surgery in C5-C6 traumatic brachial plexus injuries. IV.

Biomechanical analysis of different osteosynthesis configurations in the pin and plate fixation method for distal humerus fractures.

Distal humerus fractures commonly occur in adults with low bone mineral density causing major technical challenges for orthopedic surgeons. Persian fixation method was introduced as a novel technique to stabilize small fragments in comminuted distal humerus fractures using a set of K-wires and a reconstruction plate. The present study aims to measure this technique's stiffness and stability of this technique and analyze the effect of influential parameters with numerical simulation and biomechanical testing on a cadaveric specimen.

Medical education during the COVID-19 pandemic: lessons for the orthopedic departments.

Background: After the Coronavirus pandemic, many educational routines were stopped for the safety of medical staff. To achieve educational goals, we have implemented new policies in our hospitals. In this study, we aimed to evaluate the effect of such strategies.

Arthroscopic lunate fossa resection arthroplasty for Kienböck's disease.

The aim of this study was to assess the outcome of arthroscopic lunate fossa resection arthroplasty for patients with Kienböck's disease, previously managed without operation, and a non-functional lunate fossa. For adult patients with relapse or exacerbation of pain from Kienböck's disease 2 years after the onset of symptoms, arthroscopic removal of lunate fossa cartilage was performed to reach bleeding bone, if the cartilage in the lunate fossa was non-functional and the scaphoid fossa was intact. Sixteen patients (mean age 35 years; range 27-56) were included.

Outcomes of Arthroscopic Lunate Core Decompression Versus Radial Osteotomy in Treatment of Kienböck Disease.

Purpose: The purpose of the study was to evaluate the functional and radiographic outcomes of arthroscopic lunate decompression versus radial osteotomy in the treatment of Kienböck disease (KD).

Methods: In a prospective cohort design, we enrolled 82 patients with KD with Lichtman stages I to IIIb. Participants assigned themselves to groups by choosing either arthroscopic lunate core decompression and synovectomy (group A; n = 54) or radial osteotomy (group B; n = 28).

Treatment of Recalcitrant Nonunion of the Radius With Posterior Interosseous Bone Flap in Children.

Background: Forearm nonunion is a rare condition in children, and its treatment is usually successful. However, nontraumatic nonunion can be resistant to treatment. Although the vascularized fibular bone graft has been frequently used for complex forearm nonunion, there is no consensus on the best treatment method.

Treatment of Distal Humerus Articular Fracture with Pin-and-Plate Technique.

Distal Humerus Articular Fracture (classified by Arbeitsgemeinschaft für Osteosynthesefragen/Orthopedic Trauma Association as 13-B3) is an uncommon fracture with significant complications. We report results of 14 patients treated by open reduction and pin-and-plate fixation technique. In this retrospective study, we applied pin-and-plate fixation to 14 distal humerus articular fractures, in which screw fixation alone was inefficient or inadequate to provide stable fixation.

Mid-Term Results of the Use of a Suture Anchor Fixation for Chronic Reducible Scapholunate Dissociation.

Scapholunate dissociation (SLD) is a common and sometimes disabling ligamentous injury of the wrist. The aim of the treatment is to restore carpal alignment and to prevent joint degeneration. In the current study, we reported mid-term results of our technique using suture anchor fixation within the SL interface.

Forearm as a valuable source of vascularized bone graft for the distal humerus.

Background: The nonunion of a distal humeral fracture is a challenging complication. Our aim was to assess the results of the application of pedicled bone flap to treat this problem.

Methods: There were 6 men and 3 women with delayed union or nonunion of the distal humerus treated by 10 procedures of rigid fixation plus radial bone forearm or posterior interosseous bone flaps.

Arthroscopic ablation of an osteoid osteoma of the elbow: a case series with a minimum of 18 months' follow-up.

Background: Arthroscopic excision of an osteoid osteoma was first reported in the knee joint; since then, there have been several reports of arthroscopic excisions in the knee, shoulder, and elbow, with inconclusive outcomes because of a limited number of cases. The aim of this prospective study was to evaluate the medium-term functional effects of arthroscopic ablation in cases of an osteoid osteoma around the elbow.

Methods: We treated osteoid osteoma of the elbow through arthroscopic ablation in 10 patients.

A Time Course Study of Different Methods of Extraneural Scar Induction in a Rat Model.

Background Extraneural scar formation is a challenging problem in nerve repair. Rodent models of scar induction, with their high regenerative capacity, suffer from lack of comparable similarities with human cases. In this study, we attempted to find a reliable and reproducible method of extraneural scarring with a significant impact on the peripheral nerve function.

Two-Stage Nerve Graft in Severe Scar: A Time-Course Study in a Rat Model.

Background: Peripheral nerve repair outcomes are suboptimal in the presence of severe soft tissue injury and excessive scarring paralleling the process in tendon reconstruction of the hand. Inspired by the advantages of the two-stage technique in tendon grafting and with encouraging preliminary results, we aimed to investigate the two-stage nerve grafting technique as an alternative method of secondary nerve repair.

Methods: Thirty female rats (~200 g) were randomly distributed into two groups (n=15).

The effects of picric acid (2,4,6-trinitrophenol) and a bite-deterrent chemical (denatonium benzoate) on autotomy in rats after peripheral nerve lesion.

Denervation of the hind limb is a technique used to study peripheral nerve regeneration. Autotomy or autophagia is an undesirable response to denervation in such studies. Application of a commercially available lotion used to deter nail biting in humans reduced autotomy in rats after denervation but did not completely prevent it.

Arthroscopic ablation of osteoid osteoma in the wrist.

Osteoid osteoma is a benign bone tumor that rarely involves joints. Although there are several reports of arthroscopic osteoid osteoma excisions, to our knowledge, there are no reports of this type of treatment for osteoid osteoma in carpal bones. We report two cases of arthroscopic (a person who had a pain in the left wrist and the other one with carpal tunnel syndrome) with excision of osteoid osteoma in the carpal bones.

Suture anchor fixation for scaphoid nonunions with small proximal fragments: report of 11 cases.

Purpose: To describe the use of 2 suture anchors as the fixation devices in the management of 11 patients with scaphoid proximal pole nonunions with small proximal fragments.

Methods: In a prospective study, 11 patients with proximal pole scaphoid nonunions (10 with small proximal fragments and 1 with an oblique nonunion line) were evaluated before surgery by standard wrist x-rays and functional wrist scores including a visual analog scale (VAS), Mayo wrist score, and Quick Disabilities of the Arm, Shoulder, and Hand (QuickDASH). The nonunion site was fixed with 2 suture anchors supplemented with autologous cancellous bone graft.

Comparison of a new single-donor human fibrin adhesive with suture for posterior tibial nerve repair in rat: biomechanical resistance and functional analysis.

Objective: The use of fibrin adhesives has a broad background in nerve repair. Currently the suboptimal physical properties of single- donor fibrin adhesives have restricted their usage. The present experiment studies the performance and physical characteristics of a modified fibrin glue prepared from single-donor human plasma in the repair of posterior tibial nerve of rat.

Proximal radial diaphyseal segment resection for posttraumatic proximal radioulnar synostosis: a prospective study of 15 cases.

Background: Proximal radioulnar synostosis is a complication after elbow injuries. Various treatment methods have been reported and are associated with unpredictable outcomes. In a prospective study, we evaluated the medium-term effects of proximal radial resection on wrist and elbow function and forearm rotation in 15 cases.

Comparison and evaluation of current animal models for perineural scar formation in rat.

Unlabelled: Objective (s): Scar formation in injured peripheral nerve bed causes several consequences which impede the process of nerve regeneration. Several animal models are used for scar induction in preclinical studies which target prevention and/or suppression of perineural scar. This study evaluates the translational capacity of four of physical injury models to induce scar formation around the sciatic nerve of rat: laceration, crush, mince and burn.

Treatment of nonunion of the forearm bones with posterior interosseous bone flap.

Background: Reconstructions of forearm fracture nonunions are frequently complex. A few studies that help guide the treatment of forearm nonunion have been reported. We offer a novel surgical technique to treat nonunion of the forearm using a regional vascularized bone graft.

Effectiveness of educational intervention on undermanagement of osteoporosis in fragility fractures.

Purpose: Fragility fractures are characterized by a low energy trauma and should be considered as potentially osteoporosis-related fractures. This study aimed to determine whether the orthopedic surgeons' awareness could increase the osteoporosis management rate in patients with fragility fractures.

Method: This study was undertaken in three phases: evaluation of existing practice patterns, educational intervention and evaluation of the effect of the training.

Pin and plate fixation in complex distal humerus fractures: surgical technique and results.

Purpose: Complex distal humerus fractures are difficult to fix by conventional methods, especially in comminuted low distal humerus fractures. We propose a technique using small diameter K-wires and a plate on the humeral shaft.

Methods: Between May 2007 and March 2009, 19 patients with poor bone quality showing comminuted or low distal humerus fractures involving the articular surface were referred to our institution and were primarily treated by this technique that we called "pin and plate fixation".

Treatment of Kienböck disease by lunate core decompression.

Purpose: Kienböck disease is characterized by avascular necrosis of the lunate bone, which is usually progressive without treatment. This study examined lunate core decompression for its treatment potential.

Methods: We surgically treated 20 patients with stage 1 to 3b Kienböck disease with lunate core decompression.

Effect of bilateral median nerve excision on sciatic functional index in rat: an applicable animal model for autologous nerve grafting.

Autologous nerve graft is still the treatment of choice in peripheral nerve injury when end-to-end nerve repair is not possible. The sciatic nerve is the most widely used nerve in rat experimental studies. To assess the possibility of using the rat median nerve as a delayed animal autologous nerve graft model in nerve regeneration studies, the effect of median nerve excision on the sciatic functional index (SFI) was evaluated.