Study finds flatfoot reconstruction effective for older patients

March 12, 2018, Hospital for Special Surgery

When someone develops adult-acquired flatfoot deformity (AAFD), they are offered either a reconstruction or foot fusion depending on the severity of the flatfoot and their age. Typically reconstructions are performed in younger patients, while older patients undergo fusions, even though it can limit mobility.

Researchers from Hospital for Special Surgery (HSS) presented study findings March 10 at the annual meeting of the American Academy of Orthopaedic Surgeons (AAOS) that were the first to compare the outcomes of reconstructions on older to those of a younger group.

The study evaluated patients over 65 with stage II AAFD to see if there are worse or an increased number of subsequent surgical procedures following flatfoot when compared to younger patients.

"Overall, flatfoot reconstruction provides better long-term outcomes and mobility of the foot when compared to foot fusions," said Scott J. Ellis, MD, foot and ankle surgeon at HSS and senior study author. "However, there is a chance that reconstruction could fail, and to avoid a long, arduous recovery with multiple surgeries, patients older than 65 commonly skip reconstruction and opt for a fusion."

"My colleagues and I wanted to investigate if this was still a viable option for elderly patients in the hopes of maintaining flexibility in their foot," Dr. Ellis added.

Over 130 HSS patients were assessed in three groups based on their age: less than 45 years old (young); 45 to 65 years old (middle-aged); and 65 years and older (oldest).

This study measured clinical outcomes using the Foot and Ankle Outcome Score (FAOS) and compared preoperative and postoperative scores at a minimum of two years. Findings indicated that patients in the older group did not demonstrate any differences in their outcomes compared with patients in the young and middle-aged groups.

Additionally, were not more likely to undergo a subsequent removal of hardware or revision procedures than patients in the younger cohorts.

"Our initial hypothesis was that there would be increased complications for patients in the older group. However, we saw positive, consistent surgical outcomes across all age groups," said Dr. Ellis. "Depending on the severity of the condition, we believe a flatfoot reconstruction is a great option for patients regardless of their age. For the right patient, it can be the last surgery that they need."

Dr. Ellis believes that older patients have not often been offered a flatfoot reconstruction by their surgeons since there has not been enough research to critically review surgical outcomes. The loss of mobility with a is something patients need to consider and discuss with their surgeon along with their expectations.

"This is strong evidence to support that flatfoot reconstruction can be an option for everyone, but we need to continue to follow patient clinical outcomes over an extended period of time to provide more data for this sparsely investigated topic," Dr. Ellis stated.

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