Revision of trapeziometacarpal arthroplasty.

Complications of trapeziometacarpal arthroplasty are uncommon, but are classified as intra- and post-operative, dislocation and loosening being the main causes of revision surgery. Periprosthetic fracture and ossification are rare. Whenever possible, prosthetic revision techniques consist in partial or total replacement with modular implants.

Correction of non-traumatic extensor tendon dislocation and ulnar drift at the metacarpophalangeal joint by the modified Dell technique.

Background: Chronic ulnar extensor tendon dislocation at the metacarpophalangeal joint causes permanent extension deficit and ulnar drift. Several soft tissue procedures have been described for realignment of the extensor tendon in post-traumatic reducible instability or in combination with joint replacement in case of altered metacarpophalangeal joint in inflammatory conditions. However, no studies reported correction of both extension lag and ulnar deviation following isolated surgical treatment of ulnar extensor tendon dislocation at the metacarpophalangeal joint.

Morbidity associated with pre-hospital upper-limb tourniquet in civilian trauma: a case series.

Introduction: The widespread pre-hospital use of tourniquets, particularly in the upper limb, raises questions about associated morbidity, which has been little studied and may have serious consequences for functional prognosis.

Methods: A review of 9 patients was carried out, analyzing pre-hospital tourniquet use in terms of complications affecting recovery.

Results: There were serious complications: musculocutaneous nerve palsy in 1 patient, and compartment syndrome, rhabdomyolysis and ischemia-reperfusion syndrome in another.

Intramedullary nailing of humeral shaft fractures: percutaneous nailing in the lateral position through the Neviaser approach is a reliable technique.

Background: Displaced humeral shaft fractures are frequently treated by osteosynthesis in the active patient. We aimed to evaluate the results of intramedullary nailing (IMN) in the lateral position with the Neviaser approach and to compare them with those from IMN nailing in the standard position and conventional approach.

Methods: In the retrospectively evaluated, single-center study, we compared 20 cases of long IMN for fractures of the proximal or middle third of the humerus shaft (Multilock; Synthes Laboratory) in the lateral position with the percutaneous Neviaser approach with 52 cases of IMN in the standard position.

Standard views do not suffice in assessing distal scaphoid articular cannulated screw penetration.

Background: Articular screw penetration is one of the most common hardware-related problems after scaphoid fracture fixation, occurring in up to two-thirds of patients, in particular into the scaphotrapezotrapezoidal (STT) joint. The aim of this study was to investigate whether this clinically important issue could be detected using standard anteroposterior (AP) and lateral, as well as additional nonstandard fluoroscopic views using direct open visualization with magnifying loupes as reference standard.

Materials And Methods: Ten fresh cadaver wrists were used for this imaging study.

Incongruity of the scapulohumeral arch: an indirect sign of posterior subluxation of the humeral head in primary glenohumeral osteoarthritis.

Background: In symptomatic glenohumeral osteoarthritis, arthroplasty is the gold standard to restore a mobile and painless shoulder. The kind of arthroplasty chosen is mainly based on the evaluation of the rotator cuff and the type of glenoid. The aim of this study was to analyze the scapulohumeral arch in primary glenohumeral osteoarthritis (PGHOA) with an uninjured cuff and to determine whether posterior humeral subluxation influences the Moloney line, which corresponds to an intact scapulohumeral arch.

Validation of the shoulder range of motion software for measurement of shoulder ranges of motion in consultation: coupling a red/green/blue-depth video camera to artificial intelligence.

Purpose: Clinical evaluation of the shoulder range of motion (RoM) may vary significantly depending on the surgeon. We aim to validate an automatic shoulder RoM measurement system associating image acquisition by an RGB-D (red/green/blue-depth) video camera to an artificial intelligence (AI) algorithm.

Methods: Thirty healthy volunteers were included.

Long-term survival analysis of 191 MAÏA® prostheses for trapeziometacarpal arthritis.

Surgery for trapeziometacarpal osteoarthritis after failure of medical treatment remains controversial. The aim of this study was to determine the long-term results of the MAÏA® trapeziometacarpal prosthesis (Lépine, Genay, France). This was a retrospective clinical and radiographic study of 191 MAÏA® trapeziometacarpal prostheses implanted between 2001 and 2016 from a single centre.

Orthopaedic and trauma surgery in the time of COVID-19 in France: A nationwide survey.

Introduction: The year 2020 was marked by the COVID-19 pandemic. The entire French health system was mobilized. Surgical services were asked to reschedule all elective procedures.

Proximal row carpectomy generates better mid- to long-term outcomes than four-corner arthrodesis for post-traumatic wrist arthritis: A meta-analysis.

Introduction: In posttraumatic wrist arthritis of intermediate severity, two main palliative procedures are used to preserve some mobility in the wrist: proximal row carpectomy (PRC) and scaphoid excision followed by four corner arthrodesis (4CA). Despite satisfactory overall results, the debate continues about which one provides the best results and long-term outcomes, particularly prevention of arthritis progression. Recent comparative studies now provide us with information about mid- and long-term results.

Fibular registration using surface matching in navigation-guided osteotomies: a proof of concept study on 3D-printed models.

Purpose: Fibula free flap is currently used in mandibular reconstruction. The main difficulties involved in this surgery concern mandible shaping and therefore, osteotomy positioning on the fibula. The use of navigation could help in osteotomy positioning, but accurate registration is required.

Preliminary study of biodegradable PLA-PEU-PLA anti-adhesion membranes in a rat Achilles tendon model of peritendinous adhesions.

Peritendinous adhesions are complications known to occur up to 6 weeks after surgery and cause chronic pain and disability. Anti-adhesion barriers are currently the best option for prevention. In a previous study, we designed two biodegradable membranes, D-PACO1 and D-PACO, based on new triblock copolymers and conducted evaluations.

Evaluation of peripheral nerve injury by magnetic resonance neurography: A systematic review.

In view of the limitations of current methods for assessing peripheral nerve injury, there is a need for technical innovations to improve diagnosis, surgical approach and postoperative monitoring. The objective of this study was to conduct a systematic review to analyze the applicability of magnetic resonance neurography in peripheral nerve injuries. The present systematic review focused on the use of magnetic resonance neurography.

Simulation in shoulder arthroplasty education using three-dimensional planning software: the role of guidelines and predicted range of motion.

Aim: To demonstrate how reverse shoulder arthroplasty (RSA) planning software could be used to improve how the trainees position glenoid and humeral implants and obtain optimal simulated range of motion (ROM).

Methods: We selected four groups of five various level participants: medical student (MS), junior resident (JR), senior resident (SR), and shoulder expert (SE). Thereafter, the 20 participants planned five cases of arthritic shoulders for a RSA on a validated planning software following three phases: (1) no guidelines and no ROM feedback, (2) guidelines but no ROM feedback, and (3) guidelines and ROM feedback.

Synthesis of PLA-poly(ether urethane)-PLA copolymers and design of biodegradable anti-adhesive membranes for orthopaedic applications.

Peritendinous adhesions cause chronic pain and disability. Leading causes are trauma to tendons and surrounding tissues and immobilization after surgery. Adhesions occur between 24 hours to 6 weeks after surgery.

Acetabular retroversion after triple pelvic osteotomy for Legg-Calvé-Perthes disease and its impact on the femoroacetabular impingement: a case/control study at 15 years of follow-up.

The objective of this study was to compare the effect of triple pelvic osteotomy (TPO) in Legg-Calvé-Perthes disease (LCPD) on acetabular version in a group of patients who developed a femoroacetabular impingement (FAI) and a control group without FAI. Patients who received a TPO for unilateral LCPD were retrospectively included. Patients with bilateral LCPDs, requiring TPO with femoral procedures, or with incomplete imaging were excluded.

Modification of matched distal ulnar resection for distal radio-ulnar joint arthropathy: Analysis of distal instability and radio-ulnar convergence.

Background: In palliative surgery on the distal radio-ulnar joint (DRUJ), ulnar head resection and the Sauvé-Kapandji procedure are often followed by instability and radio-ulnar convergence. The objective of this study was to evaluate the stability of the DRUJ after modified matched distal ulnar resection performed alone or with partial or complete wrist arthrodesis.

Hypothesis: A modification of matched distal ulnar resection, consisting in reconstruction of the sixth compartment and dorsalisation of the extensor carpi ulnaris, minimises these complications, regardless of the cause and associated procedures.

Comparison of spinal accessory nerve transfer to supra-scapular nerve vs. shoulder arthrodesis in adults with brachial plexus injury.

Background: Restoring shoulder mobility, stability, and strength is a key goal in patients with brachial plexus injuries. Shoulder arthrodesis is chiefly used as an adjunct to, or after failure of, initial direct nerve surgery. The objective of this study was to compare clinical and functional shoulder outcomes after direct nerve transfer vs.

Tubular expression of heat-shock protein 27 inhibits fibrogenesis in obstructive nephropathy.

Morphological changes that occur during kidney injury involve actin skeleton remodeling. Here we tested whether heat-shock protein 27 (HSP27), a small stress response protein involved in cytoskeletal remodeling, protects the kidney from tubulointerstitial fibrosis in obstructive nephropathy. Tubular cell HSP27 immunostaining was significantly increased in human kidneys with ureteropelvic junction obstruction, supporting the clinical relevance of our studies.