Influence of the knot position on the union of the greater trochanter after bipolar hip arthroplasty via the modified Dall approach: a prospective non-randomized study

Table 3 The ratio of the greater trochanteric complications

Parameters	Present study	Present study	Present study	Oe et al.	Kuroda et al.
Parameters	Whole group	Anterior group	Posterior group	Oe et al.	Kuroda et al.
Mean age at opertion; years old	82.5 ± 7.4	82.4 ± 7.0	82.6 ± 7.9	64 ± uncertain	59.4 ± 12.2
Number of hips	95	47	48	466	60
Surgical form	BHA	BHA	BHA	THA	THA
Approach	Modified Dall	Modified Dall	Modified Dall	Modified Dall	Modified Mostardi
Knot position	Anterior+Posterior	Anterior	Posterior	uncertain	uncertain
All greater trochanteric complications	17.9%	27.6%	8.3%	7.9%	5.0%
Migration of the fragment	6.3%	10.6%	2.1%	uncertain	uncertain
Fracture of the greater trochanter	11.6%	17.0%	6.3%	uncertain	uncertain

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