Failure of the linkage mechanism in a semi-constrained total elbow arthroplasty is a rare and unpredictable event: a review of seven cases.

Purpose: Linked component of total elbow arthroplasty (TEA) consisted of bushing and locking pins. Failure of linked components is a rare complication of TEA. This study aims to investigate the mechanism and consequence of failure of the linkage mechanism in TEA surgeries.

A Functional Polymorphism Downstream of Vitamin A Regulator Gene Is Associated with Hand Osteoarthritis.

While genetic analyses have revealed ~100 risk loci associated with osteoarthritis (OA), only eight have been linked to hand OA. Besides, these studies were performed in predominantly European and Caucasian ancestries. Here, we conducted a genome-wide association study in the Han Chinese population to identify genetic variations associated with the disease.

Functional Outcomes Are Similar After Arthroscopic Capsular Repair of Triangular Fibrocartilage Complex Tears Between Outside-In Technique and All-Inside Technique Using Pre-Tied Suture Device.

Purpose: To compare outcomes of arthroscopic triangular fibrocartilage complex capsular repair at 2-year follow-up between outside-in and all-inside techniques.

Methods: In total, 58 consecutive patients (wrists) with a Palmer 1B triangular fibrocartilage complex tear without symptomatic distal radioulnar joint instability underwent arthroscopic suture repair from 2011 to 2019 including 31 patients via the outside-in technique (group A) and 27 via the all-inside technique using a pre-tied needle device (group B). Two-year follow-up included visual analog scale (VAS) pain score, motion range, grip strength, Mayo Modified Wrist Score (MMWS), the Quick Disabilities of the Arm, Shoulder, and Hand (QuickDASH) score, and complication rate.

Long-Term Outcomes of Radial Head Arthroplasty in Complex Elbow Fracture Dislocation.

The purpose of the current study was to investigate the long-term outcomes of radial head arthroplasty in complex elbow injuries through radiographic analysis and functional correlation. We evaluated 24 radial head arthroplasties in 24 consecutive patients with complex elbow fracture dislocation. All patients were treated with a single type of modular monopolar prosthesis containing smooth stem in press-fit implantation.

All-arthroscopic repair of Atzei class II and III triangular fibrocartilage complex tears using the FasT-Fix suture device.

Background: The study is aimed to propose an arthroscopic repair technique using a pre-tied suture device for peripheral TFCC (triangular fibrocartilage complex) tear with proximal component involvement.

Methods: Through a retrospective review in the medical records of patients who underwent unilateral arthroscopic repair for TFCC Palmer IB lesion between 2017 and 2019, 12 patients were arthroscopically diagnosed as proximal component tear and received more than 1 year follow-up postoperatively. The arthroscope was introduced from 6R portal to discriminate Atzei class II from III lesions by a "visualization test" and to supervise the repair procedure using pre-tied FasT-Fix suture device from 3-4 portal.

Retrospective cohort study on radial head arthroplasty comparing long-term outcomes between valgus type injury and fracture dislocation.

Background: Radial head arthroplasty (RHA) has been commonly adopted for irreparable radial head fractures while little information is addressed on valgus type injury. The purpose of this study is to report long-term outcomes and radiographic analysis in RHA for valgus type injury with comparison to fracture dislocation injury.

Methods: A retrospective cohort study was conducted in patients receiving unilateral RHA with loose-fit, modular metal prosthesis for irreparable radial head fractures between 2004 and 2012.

Surgical management of ulnar styloid fractures: comparison of fixation with anchor suture and tension band wire.

Background: Limited reference is available regarding surgical management in symptomatic ulnar styloid fractures with small bony avulsion. The study goal is to report the surgical outcomes using anchor suture fixation with comparison to traditional tension band wire fixation.

Methods: We retrospectively reviewed the medical records in patients who underwent surgical repair for unilateral ulnar styloid fractures with distal radioulnar instability between 2004 and 2017.

Arthroscopy-Assisted Corrective Osteotomy, Reduction, Internal Fixation and Strut Allograft Augmentation for Tibial Plateau Malunion or Nonunion.

Purpose: The purpose of this study was to present the results of arthroscopy-assisted corrective osteotomy (AACO), reduction, internal fixation, and strut allograft augmentation for tibial plateau malunion or nonunion.

Methods: Fifty-eight patients, mean age 49 ± 11.9 years old, with tibial plateau malunion ( = 44) or nonunion ( = 14), were included in this study.

Application of Bone Marrow-Derived Mesenchymal Stem Cells for Muscle Healing After Contusion Injury in Mice.

Background: Skeletal muscle injuries are very common in sports medicine. Conventional therapies have limited clinical efficacy. New treatment methods should be developed to allow athletes to return to play with better function.

The Effect of Hyperbaric Oxygen Treatment on Myoblasts and Muscles After Contusion Injury.

The recommended treatment varies depending on the severity of muscle injuries. The aim of this study was to evaluate the in vitro myoblast proliferation and the in vivo histologic and physiologic effects of hyperbaric oxygen treatment on muscle healing after contusion. Cells from the C2C12 myoblast cell line were exposed to 100% O for 25 min then to air for 5 min at 2.

Intramedullary nailing and plating osteosynthesis in the correction of post-traumatic deformity in late-diagnosed distal radius fractures: a retrospective comparison study.

Background: Various surgical modalities are available for correction of deformity in late-diagnosed distal radius fractures. This study compared surgical outcomes between intramedullary nailing and plating osteosynthesis in open-wedge osteotomy.

Methods: We retrospectively reviewed 47 unilateral distal radius fractures that underwent open-wedge osteotomy at more than 4 weeks after injury between 2006 and 2011.

Early and late fixation of ulnar styloid base fractures yields different outcomes.

Background: The role of surgical fixation of ulnar styloid fractures remains a subject of debate. The purpose of this study was to compare the surgical outcomes following early and late intervention.

Methods: We retrospectively reviewed 28 patients who underwent surgical repair for unilateral ulnar styloid fractures with distal radioulnar instability between 2004 and 2014.

Anteromedial fractures of the ulnar coronoid process: correlation between surgical outcomes and radiographic findings.

Background: This study aimed to report the radiographic findings and surgical outcomes of anteromedial facet (AMF) fracture of the ulnar coronoid process and to suggest an optimal approach.

Methods: In this retrospective study, 20 consecutive patients with unilateral AMF fracture of coronoid process were surgically treated and divided into two groups without (group A) and with (group B) additional proximal ulnar fractures in equal case number. Time from injury to surgery averaged 4.

Long-term outcomes of modular metal prosthesis replacement in patients with irreparable radial head fractures.

Background: The purposes of this study were to investigate the long-term outcomes of radial head replacement and to analyze the relationship between functional outcomes and periprosthetic radiolucency.

Methods: We retrospectively reviewed 32 patients who underwent unilateral radial head replacement between 2004 and 2011. Data on patient characteristics including age, gender, injury complexity, associated trauma, injury chronicity, and number of surgeries were collected and analyzed.

Results of Arthroscopic Repair of Peripheral Triangular Fibrocartilage Complex Tear With Exploration of Dorsal Sensory Branch of Ulnar Nerve.

Background: Ulnar-sided approach in arthroscopic triangular fibrocartilage complex (TFCC) repair may jeopardize treatment success by exposing the dorsal sensory branch of ulnar nerve (DSBUN) in risk of injury. We aim to conduct a follow-up assessment of arthroscopic outside-in TFCC repair and efficacy of sensory nerve exploration.

Methods: We conducted a retrospective chart review of 58 patients (59 wrists) who received arthroscopic repair of the peripheral attachment of the TFCC.

Outcomes and Satisfaction with Endoscopic Carpal Tunnel Releases and the Predictors - A Retrospective Cohort Study.

Background: Patient's final satisfaction with endoscopic carpal tunnel release (ECTR) is still unpredictable. The study aims to find the predictive factors for satisfaction in patients with carpal tunnel syndrome (CTS) treated by ECTR using the Boston CTS questionnaire.

Methods: We conducted a retrospective chart review of 37 patients (55 hands) who received ECTR and completed Boston carpal tunnel questionnaire at preoperative visit, 1 month and 6 months after operation while a telephone interview was conducted at 2 years after operation.

Distal radius fractures: Minimally invasive plate osteosynthesis with dorsal bicolumnar locking plates fixation.

Background: Controversy still exists regarding the current treatment modalities for unstable distal radius fractures. There are yet few articles investigating the efficacy of bicolumnar dorsal plating technique, which is designed to minimize tissue dissection while providing sufficiently secure fixation. A clinical study was performed to evaluate the feasibility of the minimally invasive plate osteosynthesis (MIPO) technique using a modified dorsal approach for the treatment of distal radius fractures.

A modified approach for elbow arthroscopy using an adjustable arm holder.

Background: Position shifting from elbow arthroscopy to open surgery could complicate the surgical procedures; patient safety and risks of contamination are of concern. The aim of this study is to retrospectively assess the safety and efficacy of elbow arthroscopy in 32 elbows of 32 patients using a modified arm holder to facilitate subsequent open surgery in supine position.

Methods: We performed a retrospective study in arthroscopy of the elbow performed with patients in the supine position under general or regional anesthesia.

Intramedullary nailing for correction of post-traumatic deformity in late-diagnosed distal radius fractures.

Background: Post-traumatic deformity of the distal radius may lead to multiple sequelae and severe functional impairment. Intramedullary fixation is a novel technique for treatment of distal radius fractures. The present study aimed to evaluate the functional and radiographic outcomes of intramedullary nailing for correction of post-traumatic deformity in late-diagnosed fractures of the distal radius.

Arthroscopy-assisted reduction of posteromedial tibial plateau fractures with buttress plate and cannulated screw construct.

Purpose: To present the radiologic and clinical results of posteromedial fractures treated with arthroscopy-assisted reduction and buttress plate and cannulated screw fixation.

Methods: Twenty-five patients with posteromedial tibial plateau fractures treated by the described technique were included in this study. According to the Schatzker classification, there were 5 type IV fractures (20%), 2 type V fractures (8%), and 18 type VI fractures (72%).

Arthroscopic suture fixation for avulsion fractures in the tibial attachment of the posterior cruciate ligament.

Purpose: The purpose of the study was to highlight our surgical technique of arthroscopic suture fixation for acute tibial eminence posterior cruciate ligament (PCL) avulsion fractures, clinical and radiographic outcomes, and complication rates.

Methods: This prospective study enrolled patients who had undergone arthroscopic reduction and suture fixation by use of 4 No. 5 Ethibond sutures (Ethicon, Somerville, NJ) for image-proven displaced PCL attachment fractures of the tibial eminence with posterior knee instability of grade II or higher.

Percutaneous screw and axial Kirschner wire fixation for acute transscaphoid perilunate fracture dislocation.

Purpose: In this retrospective, nonrandomized study, we evaluated the clinical outcomes of percutaneous screw and K-wire fixation in the treatment of acute transscaphoid perilunate fracture dislocation.

Methods: Between 2004 and 2009, we studied 24 patients treated by fixation with a 2.0-mm (0.

Remodeling of distal ulna after excision arthroplasty for acute comminuted distal ulnar fracture: a case report.

Bone adaptation after excision arthroplasty of distal radioulnar joint in an acute traumatic distal ulna fracture has never been reported. A case of irreparable and comminuted distal ulnar head fracture was managed by excising the ulna head and repairing the fovea (deep ligament) attachments of distal radioulnar ligaments, and then an unexpected remodeling of the distal ulna with the shape of pole and seat was noted. The anatomy of deep fibers of distal radioulnar ligament is important not only in biomechanics about the stability of distal radioulnar joint but it is also possible in the morphology about the shape of the distal radioulnar joint.

Clinical results of all-inside meniscal repair using the FasT-Fix meniscal repair system.

Background: The meniscus plays a key role in the functioning of the knee. At the present time, meniscal repair has becomes the main treatment for meniscal tear. Compared to open surgery, arthroscopic meniscal repair has become popular because of shorter time need for the operation, the smaller wound, and better accessibility to the tear portion, which is particularly difficult during open surgery.