BACKGROUND: There has been little information about the long-term status of the iliopsoas, which is the main flexor of the hip, after iliopsoas tenotomy in the treatment of @entity572 ( @entity572 ). The aim of this study was to assess the status of the iliopsoas muscle and other flexors and extensors of the hip in long-term follow-up with magnetic resonance imaging after complete iliopsoas tenotomy in @entity1 with unilateral @entity572 treated with open reduction with a medial approach. METHODS: The study included 20 @entity1 who underwent open reduction with a medial approach for unilateral @entity572 and had long-term follow-up. Magnetic resonance imaging assessment of iliopsoas, rectus femoris, tensor fasia lata, sartorius, and gluteus maximus muscles was applied and the muscles of the hip that was operated on were compared with the unoperated hip. In addition, the iliopsoas muscle was examined for reattachment and the effect of reattachment was evaluated. RESULTS: The mean age at the time of operation was 10.53  3.61 months (range, 5 to 18 mo), and mean follow-up was 16.65  2.16 years (range, 13 to 20 y). Spontaneous reattachment of the iliopsoas was observed in 18 @entity1 (90%), either in the lesser trochanter (65%) or the superior part of it (25%). There was no significant difference between the hips that were operated on and those that were not with regard to the mean cross-sectional areas (CSA) of the @entity392 , rectus femoris, sartorius, and gluteus maximus muscles. The CSA of the @entity392 , rectus femoris, sartorius, and gluteus maximus muscles showed no significant difference (P>0.05); however, CSA of iliopsoas muscle was significantly reduced in the operated hip (P<0.001). CONCLUSIONS: Although the iliopsoas tendon was atrophied after complete iliopsoas tenotomy, it was reattached in 90% of the @entity1 spontaneously in long-term follow-up. There was no statistically significant @entity1184 in any muscles in response to iliopsoas @entity194 . LEVEL OF EVIDENCE: Level IV-Therapeutic.

The Fate of Iliopsoas Muscle in the Long-term Follow-up After Open Reduction of XXXX by Medial Approach. Part 1: MRI Evaluation.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity1184 :: ('MESH:D006984', 'Disease') :: ['compensatory hypertrophy'] @entity392 :: ('MESH:D014012', 'Disease') :: ['tensor fascia lata'] @entity572 :: ('MESH:D006617', 'Disease') :: ['DDH', 'developmental dysplasia of the hip'] @entity194 :: ('MESH:D001284', 'Disease') :: ['atrophy']
@entity572 :: (MESH:D006617,Disease) :: ['Developmental Dysplasia of the Hip']
