Prevalence and associated factors of pistol grip deformity in Japanese local residents

Abstract

Pistol grip deformity (PGD) may be the main factor in femoroacetabular impingement development. This study aimed to clarify the epidemiological indices and factors related to PGD in Japanese people. This population-based cohort study included 1575 local Japanese residents. PGD, center edge angle, and joint space width were measured radiographically. We investigated the relationship between PGD and spino-pelvic parameters. Factors associated with PGD were examined using multiple logistic regression analysis, with the presence/absence of PGD as an objective variable, and sex, age, body mass index (BMI), and the presence/absence of hip pain or spino-pelvic parameters as explanatory variables. In the entire cohort, 4.9% (10.6% men, 2.1% women) had PGD on at least one side. A trend was observed between PGD and increasing age in both men and women (men: p < 0.0001, women: p = 0.0004). No relationship was observed between PGD and hip pain (risk ratio 1.0 [95% confidence interval 0.97–1.03]). Factors significantly associated with PGD were age, sex, and BMI in the multivariate model. Acquired factors may be related to PGD in Japanese people as the PGD prevalence increased with age and PGD was not significantly associated with hip pain. This study provides new insights into the etiology and clinical significance of PGD.

Is there any Relationship between Cam and Pincer Morphologies of Femoroacetabular Impingement and Hip Osteoarthritis and Pain?: A Comprehensive Systematic Review and Meta-Analysis

“…Study selection. Eighteen studies met the inclusion criteria and were included in this meta-analysis 16,[16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] . The search across PubMed, EMBASE, Scopus, and the Cochrane Collaboration Library yielded 216 citations.…”

Factors associated with cam deformity in Japanese local residents

“…However, the pathology of cam deformities has not yet been elucidated. Taniguchi et al [4] reported the prevalence of PGD and related factors in the same participants. However, the prevalence of PGD is low in Japanese individuals, and quantitative evaluation of PGD is di cult.…”

“…The remaining 1,480 participants (491 men and 989 women; mean age, 65.3 years) were included in this study. The inclusion and exclusion processes detailed above were based on those in a previous study [4]. Participant characteristics are listed in Table 5.…”

“…In recent years, cam-type FAI has been proposed as a biomechanical risk factor for hip osteoarthritis (OA) [2,3]; however, the epidemiological factors associated with cam deformity remain unclear. Taniguchi et al [4] reported the prevalence of pistol grip deformity (PGD) and related factors in the same participants; however, the prevalence of PGD is low in Japanese people, and thus, quantitative evaluation of PGD is di cult.…”

Reduced volume and altered composition of paraspinal muscles in Marfan syndrome: A retrospective cohort study

“…Because several other musculoskeletal manifestations, including joint laxity, fragile intervertebral disc, vertebral scalloping caused by dural ectasia, and osteopenia, are all supposed to have an impact on the spinal column stability, the actual contribution of the altered property of paraspinal muscles on the development of characteristic spinal deformity in MFS is still unknown. [42,43] Thus, there is a need for further investigation on whether improvements in the paraspinal muscles can change the clinical course of these patients.…”