Understanding And Managing Equinus Deformities
- Volume 24 - Issue 5 - May 2011
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What One Survey Revealed About Equinus Diagnosis And Treatment
For example, several years ago Podiatry Today ran a survey on the diagnosis and treatment of equinus (see http://tinyurl.com/43peeqc ). Two hundred sixty-nine people completed the survey. Only 5.58 percent (17 respondents) never made the diagnosis of equinus. Two hundred fifty-four (94.42 percent) of the 269 respondents diagnosed the condition monthly with 97 (36 percent) making the diagnosis more than 10 times per month, 59 (22 percent) six to 10 times per month, and 98 (36 percent) diagnosing the condition one to five times per month.
However, when asked “How often do you surgically treat equinus?,” 147 respondents replied “never” (54.65 percent) while 113 responded “yes” in 25 percent or less of their cases.
Clearly, there is still a huge conceptual abyss that exists today between the recognition of and the surgical treatment of equinus as evidenced by this small sample of foot surgeons. Ninety-seven percent make the diagnosis but only 54 percent surgically treat the condition, sometimes very infrequently. There are several reasons for this in light of the compelling widespread clinical evidence and the amount of literature, which strongly supports the biomechanical relationship between the lack of ankle joint dorsiflexion and the development of pedal pathology.
A Closer Look At The Prevalence And Impact Of Equinus
First, let us again take a look at the prospective study by DiGiovanni and colleagues to see how prevalent equinus is in patients with foot pathology.1 The authors assessed a control group of 34 patients who never had foot pathology and 34 patients who presented with “isolated” forefoot or midfoot pain. They screened 1,000 patients to get this 34 due to their exclusion criteria. The researchers excluded any patient with neuroma or neurological conditions, any hindfoot or ankle pathology or a myriad of other reasons.
The authors found that if they used less than 10 degrees of dorsiflexion with the knee extended as normal, 88 percent of the patients with pathology had equinus in comparison to 44 percent in the control group.1 When using only 5 degrees or less as the “normal” dorsiflexion, 65 percent of the pathology group had equinus versus 24 percent of the control group.
What would the numbers be if their selection criteria were not based on isolated foot pathology but included global pathology? It is very likely the percentage of patients with pathology and equinus would be higher than 88 percent.
In support of this contention is a prospective study of 174 consecutive patients out of 209 who met the selection criteria.3 They were subdivided into the following groups: rearfoot pain, medial foot pain, lateral foot pain and mixed etiology pain. Of the 174 patients, 168 (97 percent) had less than 3 degrees of dorsiflexion.
Perhaps the greatest reason that gastrocnemius equinus, or all equinus for that matter, is undertreated is simply because of our current paradigm of surgical training and understanding. In a 2008 Podiatry Today article I co-authored, I related an interview I had with Thomas Sgarlato, DPM.4 Dr. Sgarlato had shared the following:
“… in 1963, Root was doing tendo-Achilles lengthenings and McGlamry was doing tongue in groove gastrocs while I discovered you could just release the medial gastroc. Podiatry was in the dark ages then and we did not have the tools to react to it (equinus) … The problem is training. If more podiatric surgeons were trained to do the technique, and especially with the endoscopic approach that we did not have, more people would be helped.” (See www.podiatrytoday.com/what-role-does-equinus-play-in-heel-pain )