Sacroiliac joint dysfunction and asymmetrical gait.

"Walking is often compromised in individuals with low back and hip disorders, such as sacroiliac joint dysfunction (SIJD). The disorder involves reduced coactivation of the gluteus maximus and contralateral latissimus dorsi, which together provide joint stability during walking."- Feeney et al. 2018

This study, 2018, seems to reconfirm some ideas of old, and these are muscular patterns of weakness and dysfunction we see all the time. Read on . . .

There are many ways to approach pain and dysfunction at the SI joint interval. This joint has many pain patterns, both locally and peripherally, and everybody's pain pattern is a little different.
Some lean on mobilization, some manipulation, some needling, other distraction, repeated active patient mobilizations, injections, NSAIDS, ice, and the list goes on.
However, do any of these methods truly hit at the heart of the source of the problem? Maybe.
We like to look notably at the muscular component, often first, as we fell that without balance, strength, still, endurance of the active joint stabilizers of this joint, problems can easily arise and perpetuate. This article supports this.
"Walking is often compromised in individuals with low back and hip disorders, such as sacroiliac joint dysfunction (SIJD). The disorder involves reduced coactivation of the gluteus maximus and contralateral latissimus dorsi, which together provide joint stability during walking."- Feeney et al. 2018
"EMG. Non-negative matrix factorization was used to identify patterns of EMG activity (muscle synergies). Individuals with SIJD exhibited less hip extension and lower peak vertical ground reaction forces on the affected side than the unaffected side. In contrast to controls, the SIJD group also displayed a depressed muscle synergy between gluteus maximus on the affected side and the contralateral latissimus dorsi. The results indicate that individuals with SIJD exhibited both reduced activation of gluteus maximus during a loading synergy present in walking and greater asymmetry between legs when walking compared with age-matched controls."-Feeney et al 2018
J Electromyogr Kinesiol. 2018 Sep 22;43:95-103. doi: 10.1016/j.jelekin.2018.09.009. [Epub ahead of print]
Individuals with sacroiliac joint dysfunction display asymmetrical gait and a depressed synergy between muscles providing sacroiliac joint force closure when walking.
Feeney DF1, Capobianco RA2, Montgomery JR3, Morreale J4, Grabowski AM5, Enoka RM6