Evidence map›Paper›PMID 35435480›Full record

Observational studyOsteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA2022

Lower limb bone geometry in adult individuals with X-linked hypophosphatemia: an observational study.

Matteo Scorcelletti, Serhan Kara, Jochen Zange, Jens Jordan, Oliver Semler, Eckhard Schönau, Jörn Rittweger, Alex Ireland, Lothar Seefried

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Guideline
  2. Lower Limb Deformity in Different Types of Rickets.Journal of clinical medicine · 2025
    Review
  3. Switching from active vitamin D and phosphate supplementation to burosumab significantly corrects lower limb malalignment in pediatric X-linked hypophosphatemia.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2025
    Observational
  4. [Surgical strategies for osteotomy correction of severe lower limb deformities in hypophosphatemic rickets].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2025
    Article
  5. Review
  6. Article
  7. The Diagnosis and Therapy of XLH.Calcified tissue international · 2025
    Review
  8. Article
  9. Article
  10. The contribution of a novelFrontiers in endocrinology · 2023
    Article
  11. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 2 countries.

Matteo ScorcellettiResearch Centre for Musculoskeletal Science and Sports Medicine, Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK.
Serhan KaraDivision of Muscle and Bone Metabolism, Institute of Aerospace Medicine DLR, Cologne, Germany.
Jochen ZangeDivision of Muscle and Bone Metabolism, Institute of Aerospace Medicine DLR, Cologne, Germany.
Jens JordanDivision of Muscle and Bone Metabolism, Institute of Aerospace Medicine DLR, Cologne, Germany.
Oliver SemlerDepartment of Pediatrics and Adolescent Medicine, University of Cologne, Cologne, Germany.
Eckhard SchönauDepartment of Pediatrics and Adolescent Medicine, University of Cologne, Cologne, Germany.
Jörn RittwegerDivision of Muscle and Bone Metabolism, Institute of Aerospace Medicine DLR, Cologne, Germany.
Alex IrelandResearch Centre for Musculoskeletal Science and Sports Medicine, Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK.
Lothar SeefriedOrthopaedic Department, University of Würzburg, Wurzburg, Germany. l-seefried.klh@uni-wuerzburg.de.ORCID http://orcid.org/0000-0003-1154-3388
University of Cologne · DEManchester Metropolitan University · GBUniversity of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We assessed lower-limb geometry in adults with X-linked hypophosphatemia (XLH) and controls. We found large differences in multiple measures including femoral and tibial torsion, bowing and cross-sectional area and acetabular version and coverage which may contribute to clinical problems such as osteoarthritis, fractures and altered gait common in XLH. PURPOSE: Individuals with X-linked hypophosphatemia (XLH) are at risk of lower-limb deformities and early onset of osteoarthritis. These two factors may be linked, as altered biomechanics is a risk factor for osteoarthritis. This exploratory evaluation aims at providing clues and concepts for this association to facilitate future larger-scale and longitudinal studies on that aspect.

methodsFor this observational study, 13 patients with XLH, aged 18-65 years (6 female), were compared with sex-, age- and weight-matched healthy individuals at a single German research centre. Femoral and hip joint geometry, including femoral and tibial torsion and femoral and tibial shaft bowing, bone cross-sectional area (CSA) and acetabular version and coverage were measured from magnetic resonance imaging (MRI) scans.

resultsTotal femoral torsion was 29° lower in individuals with XLH than in controls (p < 0.001), mainly resulting from lower intertrochanteric torsion (ITT) (p < 0.001). Femoral lateral and frontal bowing, tibial frontal bowing, mechanical axis, femoral mechanical-anatomical angle, acetabular version and acetabular coverage were all greater and tibial torsion lower in individuals with XLH as compared to controls (all p < 0.05). Greater femoral total and marrow cavity CSA, greater tibial marrow cavity CSA and lower cortical CSA were observed in XLH (all p < 0.05). DISCUSSION: We observed large differences in clinically relevant measures of tibia and particularly femur bone geometry in individuals with XLH compared to controls. These differences may plausibly contribute to clinical manifestations of XLH such as early-onset osteoarthritis, pseudofractures and altered gait and therefore should be considered when planning corrective surgeries.

Indexed as

Familial Hypophosphatemic RicketsOsteoarthritisAdultFemaleFemurHumansLower ExtremityTibiaBoneFemurGeometryShapeXLH

Identifiers

PMID35435480
PMCPMC9187561
OpenAlexW4224016440

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.