Prevalence and risk factors of concomitant malleolar and fibular fractures in patients with distal spiral tibial shaft fractures.

Purpose: (1) To evaluate the incidence and combination types of concomitant malleolar and fibular fractures in patients with distal spiral tibial shaft fractures. (2) To evaluate the risk factors for concomitant malleolar fractures in patients with distal spiral tibial shaft fractures.

Methods: A retrospective review was performed on 64 cases of surgically treated distal spiral tibial shaft fractures with complete radiographs and computed tomography (CT) scans.

Engineering spatially-confined conduits to tune nerve self-organization and allodynic responses via YAP-mediated mechanotransduction.

Chronic allodynia stemming from peripheral stump neuromas can persist for extended periods, significantly compromising patients' quality of life. Conventional managements for nerve stumps have demonstrated limited effectiveness in ensuring their orderly termination. In this study, we present a spatially confined conduit strategy, designed to enhance the self-organization of regenerating nerves after truncation.

Injectable Magnetic Hydrogel Filler for Synergistic Bone Tumor Hyperthermia Chemotherapy.

The therapeutic efficacy of bone tumor treatment is primarily limited by inadequate tumor resection, resulting in recurrence and metastasis, as well as the deep location of tumors. Herein, an injectable doxorubicin (DOX)-loaded magnetic alginate hydrogel (DOX@MAH) was developed to evaluate the efficacy of an alternating magnetic field (AMF)-responsive, chemothermal synergistic therapy for multimodality treatment of bone tumors. The prepared hydrogel exhibits a superior drug-loading capacity and a continuous DOX release.

Multi-needle blow-spinning technique for fabricating collagen nanofibrous nerve guidance conduit with scalable productivity and high performance.

Nerve guidance conduits (NGCs) have been widely accepted as a promising strategy for peripheral nerve regeneration. Fabricating ideal NGCs with good biocompatibility, biodegradability, permeability, appropriate mechanical properties (space maintenance, suturing performance, etc.), and oriented topographic cues is still current research focus.

Technical note: Intraoperative ultrasound measurement for evaluating the stability of the inferior tibiofibular joint in patients with ankle fractures.

Objectives: Injury to the tibiofibular syndesmosis is a common complication of ankle fractures. Currently, it is challenging to determine the stability of the tibiofibular joint caused by ankle fractures during surgery. This study aims to establish a standardized method for dynamically evaluating the stability of the inferior tibiofibular joint under intraoperative ultrasound and assess its utility in surgery, thereby assisting in determining the necessity for fixation of the inferior tibiofibular joint after fracture reduction and fixation.

Construction of a mineralized collagen nerve conduit for peripheral nerve injury repair.

A new nerve guidance conduits (NGCs) named MC@Col containing Type I collagen (Col) and mineralized collagen (MC) was developed, enhancing mechanical and degradation behavior. The physicochemical properties, the mechanical properties and degradation behavior were all evaluated. The adhesion and proliferation of Schwann cells (SCs) were observed.

Secondary Thumb Reconstruction via Ectopic Banking of Bony Phalanges From a Nonreplantable Amputated Thumb: A Follow-Up Study.

Purpose: This study aimed to evaluate the radiological and functional results of secondary thumb reconstruction via ectopic banking of bony phalanges from a nonreplantable amputated thumb.

Methods: Thumb reconstruction was performed using the bony phalanges from a nonreplantable amputated thumb that were ectopically banked in a subcutaneous pocket. A wraparound flap was harvested from the ipsilateral great toe and wrapped around the bone graft.

[Retrograde muscle release method in treatment of mild to moderate ischemic muscle contracture of forearm].

Objective: To investigate the effectiveness of retrograde muscle release in treatment of mild to moderate type ischemic muscle contracture of forearm classified by Tsuge.

Methods: Between March 2010 and September 2018, 11 patients with mild to moderate ischemic muscle contracture of forearm were treated with retrograde muscle release. There were 6 males and 5 females with an average age of 24 years (range, 16-29 years).

Markerless robotic pedicle screw placement based on structured light tracking.

Purpose: Most existing robot systems for pedicle screw placement rely on optical markers to establish the spatial relationship between the surgical tool and the surgical path. Marker installation and registration are time-consuming, and error may also accumulate along the complicated coordinate transformation chain. Therefore, we proposed a markerless structured light-based method to simplify the surgery workflow and the coordinate transformation chain.

Risk Factors for Patellar Clunk or Crepitation after Primary Total Knee Arthroplasty: A Systematic Review and Meta-analysis.

Patellar clunk and crepitation (PCC) have been reported as a consequence of primary total knee arthroplasty (TKA). The incidence and contributing factors have not been fully defined. We performed this systematic review to evaluate factors associated with PCC following primary TKA.

Resorption of Iliac Bone Grafts Following Wrap-Around Flap for Thumb Reconstruction: A Follow-Up Study.

Purpose: To study the bone resorption pattern of iliac crest grafts after thumb reconstruction with a wrap-around flap from the hallux.

Methods: Patients who underwent thumb reconstruction with a wrap-around flap from the hallux were followed up. We measured the length, proximal, middle, and distal widths, and proximal, middle, and distal thicknesses of the iliac crest grafts on posteroanterior and lateral radiographs and used the length, width, and thickness ratios of the iliac grafts and the first metacarpal bones to calculate the amount of bone resorption.

Intraoperative ultrasound-guided reduction of femoral shaft fractures using intramedullary nailing: a technical note.

Objectives: Intramedullary (IM) nailing is the preferred method for treatment of femoral shaft fractures. However, for the surgical staff and the patients, exposure to large dose of X-rays is inevitable during the procedure. In this paper, a new technique based on ultrasound is proposed to guide the reduction of femoral fractures, reducing radiation exposure.

Prone positioning for intramedullary nailing of subtrochanteric fractrures, the techniques of intraoperative fluoroscopy and reduction: A technique note.

The treatment of subtrochanteric fractures is a challenge for orthopaedic trauma surgeons. Three positions have been described previously: supine on a fracture table, supine on a flat radiolucent table, and the lateral decubitus position on a flat radiolucent table. Each one has its advantages and limitations.

The mechanism of Naringin-enhanced remyelination after spinal cord injury.

Our previous study revealed that intragastric administration of naringin improved remyelination in rats with spinal cord injury and promoted the recovery of neurological function of the injured spinal cord. This study sought to reveal the mechanisms by which naringin improves oligodendrocyte precursor cell differentiation and maturation, and promotes remyelination. Spinal cord injury was induced in rats by the weight-drop method.

The Safety of the Thenar Portal: An Anatomical Study of the Thumb Carpometacarpal Arthroscopy.

 To define the localization of the distal course of the motor branches of median nerve (MBMN) and its arborization and its quantitative relationships to the thenar portal of the carpometacarpal (CMC) joint in the hope of evaluating the safety of this portal.  In 16 embalmed cadaveric upper extremities, the localization of the course of the MBMN and its arborization were defined. In 14 fresh-frozen cadaver upper extremities, the CMC arthroscopic portals, 1-U, 1-R, and a thenar portal, were established, after which the limbs were dissected.

Preservation of Devitalized Bone in Necrotic Digits Following Crush Injury With Free Tissue Transfer.

Traditional management of necrotic digits has been to allow demarcation between viable and nonviable tissues to occur, and thus to indicate the level of amputation required. In this case report, the phalangeal length of the necrotic thumb was maintained in 2 patients who had sustained crush injury. After nonviable soft tissues were debrided, the devitalized bones were covered with soft tissue flaps.

The Course of the Terminal Posterior Interosseous Nerve and Its Relationship with Wrist Arthroscopy Portals.

 The terminal branches of the posterior interosseous nerve (PIN) are the main articular branch on the dorsal aspect of the wrist. Its relationship to dorsal wrist arthroscopic portals has not yet been elucidated. The purpose of this study was to quantitatively describe the anatomical relationships between the dorsal wrist arthroscopic portals and the PIN.

[Analyses of microbiology and antibiotic susceptibility in prosthetic knee infections].

Objective: To explore the microbiological etiology of prosthetic knee infections during two-staged revision and analyze antibiotic susceptibility of bacteria so as to provide clinical recommendations for empiric antibiotic therapy.

Methods: A retrospective review was performed for 78 hospitalized patients for prothetic knee infections undergoing two-staged revision between January 1, 2007 and February 28, 2014.Suspicious intra-operative tissues were collected and cultured.

[Elution properties of linezolid bone cement].

Objective: To explore the elution properties of linezolid bone cement so as to guide the clinical application of linezolid bone cement in the treatment of infection after total joint arthroplasty.

Methods: The specimens of bone cement (40 g each) were divided into 6 groups depending on mixed different contents with linezolid (5 specimens in each group), group I (1.2 g), group II (2.

Hourglass-like constrictions of peripheral nerve in the upper extremity: a clinical review and pathological study.

Background: The development of an hourglass-like constriction in the nerve is rare, and its origin is unknown. Its clinical manifestations are not well documented, and the treatment protocol has not been established.

Objective: To identify the cause, presentation, and possible treatment for patients with nerve palsies secondary to an hourglass-like constriction in the affected nerves.

Contralateral C7 nerve root transfer to neurotize the upper trunk via a modified prespinal route in repair of brachial plexus avulsion injury.

Purpose: In this report, we present our experience on the repair of brachial plexus root avulsion injuries with the use of contralateral C7 nerve root transfers with nerve grafting through a modified prespinal route.

Methods: The outcomes of the contralateral C7 nerve root transfer to neurotize the upper trunk and C5/C6 nerve roots of the total or near total brachial plexus nerve root avulsion injury in a series of 41 patients were evaluated. The contralateral C7 nerve root that was dissected to the distal end of the divisions, along with the sural nerve graft, were placed underneath the anterior scalene and longus colli muscles, and then passed through the retro-esophageal space to neurotize the recipient nerve.

Typical brachial neuritis (Parsonage-Turner syndrome) with hourglass-like constrictions in the affected nerves.

Purpose: To report on 5 patients who had acute brachial neuritis (Parsonage-Turner syndrome) with hourglass-like constriction in the affected nerves.

Methods: We retrospectively reviewed 5 patients who were treated in our department from December 2003 to December 2008. Acute, intense pain around the shoulder girdle and upper arm was the first symptom and was followed by muscle weakness and atrophy.

Donor foot morbidity following modified wraparound flap for thumb reconstruction: a follow-up of 69 cases.

Purpose: To evaluate donor foot morbidity after thumb reconstruction using a modified wraparound flap.

Methods: We observed patients who accepted thumb reconstruction with the modified wraparound flap between January 2001 and December 2009. We examined and evaluated the reconstructed thumb and donor foot.

[A method of measuring the displacement of the distal radioulnar joint on the three-dimensional CT imaging].

Objectives: To establish a clinical method for measuring the displacement of the distal radioulnar joint (DRUJ) precisely irrespective of ulnar variance, and to derive normal population translation references with palmar and dorsal stress.

Methods: Thirty-seven normal distal forearms were scanned with computed tomography using an apparatus designed by Pirela-Cruz. Each extremity was scanned in two positions: maximal ulnar palmar and dorsal stress.