TY - JOUR
T1 - Effect of medial displacement calcaneal osteotomy on ankle kinematics in a cadaver model
AU - Michelson, James D.
AU - Mizel, Mark
AU - Jay, Peter
AU - Schmidt, Guy
PY - 1998/3
Y1 - 1998/3
N2 - Although medical displacement calcaneal osteotomy has been advocated for treatment of acquired pes planus, no studies have determined the biomechanical consequences at the ankle of such a procedure. The present investigation examined the alteration in ankle motion that resulted from a medial sliding calcaneal osteotomy. In dorsiflexion, the ankle specimens were found to have altered internal rotation and varus alignment. At maximal dorsiflexion, there was a 76% increase in internal rotation (4.4°± 2.5°versus 2.5°± 1.7°for intact ankles, P < 0.004) and an increase of 425% in varus (0.42 °± 0.56°versus 0.08°± 0.34°for intact ankles, P < 0.003). There were no significant differences seen in plantar flexion. Based on these results, caution is advised in the indiscriminate use of medial sliding osteotomies, because this procedure may predispose the patient to premature ankle arthritis as a consequence of the altered ankle motions.
AB - Although medical displacement calcaneal osteotomy has been advocated for treatment of acquired pes planus, no studies have determined the biomechanical consequences at the ankle of such a procedure. The present investigation examined the alteration in ankle motion that resulted from a medial sliding calcaneal osteotomy. In dorsiflexion, the ankle specimens were found to have altered internal rotation and varus alignment. At maximal dorsiflexion, there was a 76% increase in internal rotation (4.4°± 2.5°versus 2.5°± 1.7°for intact ankles, P < 0.004) and an increase of 425% in varus (0.42 °± 0.56°versus 0.08°± 0.34°for intact ankles, P < 0.003). There were no significant differences seen in plantar flexion. Based on these results, caution is advised in the indiscriminate use of medial sliding osteotomies, because this procedure may predispose the patient to premature ankle arthritis as a consequence of the altered ankle motions.
UR - http://www.scopus.com/inward/record.url?scp=0031896365&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031896365&partnerID=8YFLogxK
U2 - 10.1177/107110079801900303
DO - 10.1177/107110079801900303
M3 - Article
C2 - 9542982
AN - SCOPUS:0031896365
SN - 1071-1007
VL - 19
SP - 132
EP - 136
JO - Foot and Ankle International
JF - Foot and Ankle International
IS - 3
ER -