Myth or Fact: Joint Hypermobility is Related to Pediatric Functional Abdominal Pain & Dr. Roy Link

According to a recent study (RJ Shulman et al. J Pediatri 2020; 222: 134-40), the prevalence of joint hypermobility does NOT differ in children with irritable bowel syndrome, functional abdominal pain, or healthy control children.

Methods (to reach this conclusion):

  • Children (median age ~9.5 years) with irritable bowel syndrome (n=109), functional abdominal pain (n=31), and healthy controls (n=69) completed a prospective 2-week pain and stooling diaries.  In addition, children and parents reported on measures of anxiety, depression, and somatization. Children were recruited from both primary care and tertiary care settings
  • Joint hypermobility was determined using Beighton criteria using a goniometer and examined cutoffs at both ≥4 or ≥6).

Key findings:

  • Beighton scores were similar between the groups, as was the proportion with joint hypermobility.  Beighton scores were not related to abdominal pain or stooling characteristics.
  • Beighton score ≥4: IBS 35%, FAP 36%, healthy controls 36%.
  • Beighton score ≥6: IBS 12%, FAP 13%, healthy controls 9%.
  • Children reported depression more frequently in those with Beighton scores ≥6 and somatization was greater in those with a score ≥4.

Discussion:

  • “It is well-recognized that patients with joint hypermobility syndromes (eg, Ehlers-Danlos syndrome, Marfan) commonly have GI symptoms.” However, joint hypermobility is common —in this study’s healthy control group 36% had a score ≥4 and 9% had a score ≥6.
  • This study is in agreement with a school-based study (n=136) (M Saps et al. JPGN 2018; 66: 387-90).
  • Limitations: This study population had a median age of ~9.5 years; thus, these findings need to be determined in an older children

My take: There does not appear to be an increased risk of functional GI disorders in children with joint hypermobility. Thus, looking for joint laxity/hypermobility in children with abdominal pain is not needed.

Related blog posts:

Also, a link to Dr. Roy (Benaroch).  Roy is an Atlanta pediatrician and he explains, with the help of Batman and Luigi, the term ‘index’ case and when one is considered exposed: Dr. Roy Covid Pathway

Joint Mobility –Not Associated with Increased Functional GI Disorders

According to a recent study (M Saps et al. JPGN 2018; 66: 387-90), joint hypermobility is not associated with an increased risk of functional gastrointestinal disorders (FGIDs).

From a school-based study of 654 children from a public school in Cali, Columbia, 148 (22.6%) were identified as having an FGID. Among this group, 136 children participated in the study along with 136 age/sex-matched healthy controls. Joint laxity was assessed to establish a Beighton score.

Key finding:

  • There was no significant difference in joint laxity between the FGID group and the control group, with OR of 1.03.

The implication of this study is that previous associations between joint hypermobility (JH) and FGIDs could be due to selection bias at tertiary care centers.  Alternatively, “it is possible that the association between FGIDs and JH exists, but it is only limited to a subset of patients that consult at specialized clinics.”

My take: This article challenges the idea that JH increases the risk of FGID.  Based on this study, if JH is a risk factor, it is hard to detect in a general population.

Related blog post:

 

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