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  1. Fulltext Reduction of Displaced Acetabular Fracture with Central Hip Dislocation using Vector Traction: A Case Report
    Wong R, Lim SM, Pang G
    Malays Orthop J, 2023 Mar;17(1):184-187.
    PMID: 37064630 DOI: 10.5704/MOJ.2303.022
    Fracture-dislocations of the hip is the result of high-energy trauma which necessitates urgent reduction. Closed reduction is usually attempted first and if failed, open reduction is indicated and may require more than one surgical approach. However, there is also the option of managing it with vector traction. This case report details the treatment of a middle-aged gentleman who sustained a left hip central dislocation which was gradually reduced with vector traction prior to surgery and in doing so, diminished the risk of him developing several potentially debilitating complications known to be associated with surgical fixation of such injuries.
  2. Atypical-laterality curve patterns in adult idiopathic scoliosis: refining the AdIS classification
    Wong RHY, Tan GW, Chandirasegaran S, Chiu CK, Chan CYW, Kwan MK
    Eur Spine J, 2026 Nov 05.
    PMID: 42983049 DOI: 10.1007/s00586-026-10478-2
    PURPOSE: The objective of this study was to analyze the distribution of curve patterns in adult idiopathic scoliosis (AdIS) patients according to the AdIS classification by Lin et al. We also aim to identify the prevalence of atypical curve patterns that are not represented within the existing framework and propose a laterality modifier as an extension of the AdIS classification.

    METHODS: Adult idiopathic scoliosis patients aged above 18 years who underwent posterior spinal fusion (PSF) between 2023 and 2025 were retrospectively reviewed. Radiographic parameters were measured using pre-operative whole spine radiographs. Curves were classified according to AdIS classification by Lin et. al. Reversed curve patterns not represented by the current AdIS classification were recorded as atypical-laterality variants with an added laterality modifier, denoted "R" (reversed). Descriptive statistical analysis was performed.

    RESULTS: A total of 215 patients were included. The existing AdIS classification successfully classified 92.6% of patients, whereas 7.4% exhibited atypical-laterality curve patterns. AdIS type 1 curves were the most prevalent (34.7%), followed by type 2 (17.6%) and type 6 (15.1%). The majority of curves demonstrated non-structural lumbosacral modifiers (89.4%) and preserved global alignment (98.0%). Among the atypical-laterality cases, AdIS 6-R and 5-R curves were the most numerically frequent subtypes, accounting for five (31.3%) and four (25.0%) cases respectively.

    CONCLUSION: The AdIS classification demonstrated excellent applicability, successfully classifying 92.6% of patients in our study cohort. Atypical-laterality patterns were identified in 16 patients (7.4%), with AdIS 6-R being the commonest pattern encountered.

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