Locked metacarpophalangeal joint is an uncommon phenomenon with many possible etiologies. Diagnosis can be difficult because of the many more common pathologies (trigger finger, sagittal band lesion, etc.) that can lead to a clinical picture that may resemble the locked metacarpophalangeal joint. Once the differential diagnoses have been eliminated, the etiology of this blockage must be determined and the surgical procedure must be oriented. The origin of the problem is often difficult to determine, especially since standard imaging tests are often not very informative. Several clinical forms are possible, with blockages in extension or flexion, but which will have a disabling functional impact on the overall function of the hand. Currently, there is no gold standard for the management of this condition. In this study, we performed a review of the literature in order to better understand the different possible etiologies but also to analyze the different diagnostic and therapeutic management. LEVEL OF EVIDENCE: IV.

BACKGROUND: To explore the digitisation of jaw movement trajectories through devices and discuss the physiological factors and device-dependent variables with their subsequent effects on the jaw movement analyses.
METHODS: Based on predefined eligibility criteria, the search was conducted following PRISMA-P 2015 guidelines on MEDLINE, EBSCO Host, Scopus, PubMed, and Web of Science databases in 2022 by 2 reviewers. Articles then underwent Cochrane GRADE approach and JBI critical appraisal for certainty of evidence and bias evaluation.
RESULTS: Thirty articles were included following eligibility screening. Both in vitro experiments (20%) and in vivo (80%) devices ranging from electronic axiography, electromyography, optoelectronic and ultrasonic, oral or extra-oral tracking, photogrammetry, sirognathography, digital pressure sensors, electrognathography, and computerised medical-image tracing were documented. 53.53% of the studies were rated below \"moderate\" certainty of evidence. Critical appraisal showed 80% case-control investigations failed to address confounding variables while 90% of the included non-randomised experimental studies failed to establish control reference.
CONCLUSIONS: Mandibular and condylar growth, kinematic dysfunction of the neuromuscular system, shortened dental arches, previous orthodontic treatment, variations in habitual head posture, temporomandibular joint disorders, fricative phonetics, and to a limited extent parafunctional habits and unbalanced occlusal contact were identified confounding variables that shaped jaw movement trajectories but were not highly dependent on age, gender, or diet. Realistic variations in device accuracy were found between 50 and 330 µm across the digital systems with very low interrater reliability for motion tracing from photographs. Forensic and in vitro simulation devices could not accurately recreate variations in jaw motion and muscle contractions.

OBJECTIVE: Speech impairment is an early symptom of Parkinson\'s disease (PD). This study has summarized the literature related to speech and voice in detecting PD and assessing its severity.
METHODS: A systematic review of the literature from 2010 to 2021 to investigate analysis methods and signal features. The keywords \"Automatic analysis\" in conjunction with \"PD speech\" or \"PD voice\" were used, and the PubMed and ScienceDirect databases were searched. A total of 838 papers were found on the first run, of which 189 were selected. One hundred and forty-seven were found to be suitable for the review. The different datasets, recording protocols, signal analysis methods and features that were reported are listed. Values of the features that separate PD patients from healthy controls were tabulated. Finally, the barriers that limit the wide use of computerized speech analysis are discussed.
RESULTS: Speech and voice may be valuable markers for PD. However, large differences between the datasets make it difficult to compare different studies. In addition, speech analytic methods that are not informed by physiological understanding may alienate clinicians.
CONCLUSIONS: The potential usefulness of speech and voice for the detection and assessment of PD is confirmed by evidence from the classification and correlation results.

We report the case of a 58-year-old man who sustained an open palmar dislocation of the fifth metacarpophalangeal joint of the little finger secondary to a bicycle accident with an uncommon presentation. These open dislocations have only been reported once in the literature. A palmar and dorsal approach had to be used to completely free the joint from incarcerations and allow complete reduction and repair of the damaged anatomical structures. We then discuss this particular type of dislocation, its pathophysiology and management.

Neurodegenerative motor diseases (NMDs) have devastating effects on the lives of patients and their loved ones, in part due to the impact of neurologic abnormalities on speech, which significantly limits functional communication. Clinical speech researchers have thus spent decades investigating speech features in populations suffering from NMDs. Features of impaired articulatory function are of particular interest given their detrimental impact on intelligibility, their ability to encode a variety of distinct movement disorders, and their potential as diagnostic indicators of neurodegenerative diseases. The objectives of this scoping review were to identify (1) which components of articulation (i.e. coordination, consistency, speed, precision, and repetition rate) are the most represented in the acoustic literature on NMDs; (2) which acoustic articulatory features demonstrate the most potential for detecting speech motor dysfunction in NMDs; and (3) which articulatory components are the most impaired within each NMD.
This review examined literature published between 1976 and 2020. Studies were identified from six electronic databases using predefined key search terms. The first research objective was addressed using a frequency count of studies investigating each articulatory component, while the second and third objectives were addressed using meta-analyses.
Findings from 126 studies revealed a considerable emphasis on articulatory precision. Of the 24 features included in the meta-analyses, vowel dispersion/distance and stop gap duration exhibited the largest effects when comparing the NMD population to controls. The meta-analyses also revealed divergent patterns of articulatory performance across disease types, providing evidence of unique profiles of articulatory impairment.
This review illustrates the current state of the literature on acoustic articulatory features in NMDs. By highlighting the areas of need within each articulatory component and disease group, this work provides a foundation on which clinical researchers, speech scientists, neurologists, and computer science engineers can develop research questions that will both broaden and deepen the understanding of articulatory impairments in NMDs.

Language learning is a multimodal endeavor; to improve their pronunciation in a new language, learners access not only auditory information about speech sounds and patterns, but also visual information about articulatory movements and processes. With the development of new technologies in computer-assisted pronunciation training (CAPT) come new possibilities for delivering feedback in both auditory and visual modalities. The present paper surveys the literature on computer-assisted visual articulation feedback, including direct feedback that provides visual models of articulation and indirect feedback that uses visualized acoustic information as a means to inform articulation instruction. Our focus is explicitly on segmental features rather than suprasegmental ones, with visual feedback conceived of as providing visualizations of articulatory configurations, movements, and processes. In addition to discussing types of visual articulation feedback, we also consider the criteria for effective delivery of feedback, and methods of evaluation.

Parkinson\'s disease (PD) poses a significant challenge for the arthroplasty surgeon, owing to excessive muscle tone, higher fracture risk and poor bone quality. Several studies have reported high mortality, early failure and perioperative complications associated with hip fracture surgery in PD; however, no higher-level evidence exists regarding elective hip arthroplasty.The aim of our study was to perform a systematic review to evaluate the evidence basis and clinical outcomes pertaining to patients with underlying Parkinson\'s disease undergoing elective total hip arthroplasty (THA).We searched MEDLINE, EMBASE and The Cochrane Central Register of Controlled Trials to identify studies evaluating the safety and clinical outcomes of THA in patients suffering from Parkinson\'s. Our review conforms to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.Ten studies encompassing 49,730 patients were included in our systematic review. Qualitative synthesis demonstrated comparable results between PD patients and controls with respect to one-year mortality and surgical site infections. PD patients experienced more medical complications, had a longer hospital stay and worse long-term implant survival. Some studies also reported a higher rate of dislocation, periprosthetic fractures and aseptic loosening.Decisions about the optimal articulation, the utilization of cemented components, dual-mobility cups or constrained liners were not uniform among included studies.THA in patients with Parkinson\'s disease can offer significant functional gains and pain relief. Surgical considerations pertain to the approach and ways to address instability, whereas emphasis should be placed on appropriate counselling and exploring whether potential improvement of life quality outweighs the risks. Cite this article: EFORT Open Rev 2020;5:856-865. DOI: 10.1302/2058-5241.5.200034.

In cases of osteoarthritis with preserved motion, joint denervation can be an effective alternative to arthroplasty or arthrodesis to reduce joint-related pain. Although denervation is a standardized procedure for wrist osteoarthritis, it is used sparingly for finger joints. We conducted a systematic review to summarize reported cases of finger joint denervation in hand osteoarthritis with a specific focus on surgical procedures and postoperative outcomes. PubMed, Cochrane and Science Direct databases were searched from 1998 to 2019 and 13 relevant articles were selected. Three hundred and twenty-five denervations were conducted on 291 patients. Distal interphalangeal (DIP) joint denervation was performed through a dorsal approach; 83% of patients were satisfied with the surgery and complications occurred in 58%. Proximal interphalangeal (PIP) joint denervation was performed through a palmar approach; 90% of patients were satisfied with the surgery; complications were observed in 14%. Good results were observed in 95% of patients who underwent metacarpophalangeal (MCP) joint denervation; complications were observed in 26%; denervation was carried out with dorsal and palmar approaches in all cases. Denervation of the trapeziometacarpal (TMC) joint was achieved through the Wagner approach (61%), multiple incisions (26%), or dorsal approach (13%); satisfaction rate was 91%, with a 6% complication rate. Finger joint denervation in hand osteoarthritis is a simple and effective procedure, providing satisfactory pain relief. Good results are reported in all studies, especially for PIP and TMC joint denervation. Further investigations should be conducted on DIP and MCP joint denervation.

Does \"the motor system\" play \"a role\" in speech perception? If so, where, how, and when? We conducted a systematic review that addresses these questions using both qualitative and quantitative methods. The qualitative review of behavioural, computational modelling, non-human animal, brain damage/disorder, electrical stimulation/recording, and neuroimaging research suggests that distributed brain regions involved in producing speech play specific, dynamic, and contextually determined roles in speech perception. The quantitative review employed region and network based neuroimaging meta-analyses and a novel text mining method to describe relative contributions of nodes in distributed brain networks. Supporting the qualitative review, results show a specific functional correspondence between regions involved in non-linguistic movement of the articulators, covertly and overtly producing speech, and the perception of both nonword and word sounds. This distributed set of cortical and subcortical speech production regions are ubiquitously active and form multiple networks whose topologies dynamically change with listening context. Results are inconsistent with motor and acoustic only models of speech perception and classical and contemporary dual-stream models of the organization of language and the brain. Instead, results are more consistent with complex network models in which multiple speech production related networks and subnetworks dynamically self-organize to constrain interpretation of indeterminant acoustic patterns as listening context requires.

BACKGROUND: Temporomandibular joint (TMJ) dysfunction associates pain, limited mouth opening and joint noise. Failures of conservative treatments may lead to arthroscopy. The aim of our study was to evaluate the current interest of arthroscopy in the treatment of TMJ dysfunction.
METHODS: Using the keywords \"TMJ\" and \"Arthroscopy\", 1668 articles were found in the Sciencedirect database. We selected 17 papers published between September 2012 and May 2016. Six questions were asked: (1) what treatment should be given to patients suffering from TMJ dysfunction? (2) What treatment should be performed for TMJ disorders when conservative treatments failed? (3) Does Wilkes staging change the surgical indication? (4) What has to be done in case of arthroscopy failure? (5) Can disc position be improved after surgery? (6) Should the disc position be improved?
CONCLUSIONS: (1) Conservative treatment should always be considered in first intention (2) In case of conservative treatment failures, surgery can be proposed, beginning with the less invasive one (3) Whatever the Wilkes stage, treatment should begin by the less invasive one (4) In case of arthroscopy failure, TMJ arthrotomy can be indicated (5) Disc position may be improved in the long term but it is complex to obtain (only one paper) (6) there is no evidence that disk has to be repositioned.