In situ pinning or modified Dunn procedure? Which one is superior in slipped capital femoral epiphysis surgery? A case-control study including only stable/moderate cases.
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Abstract
Purpose: The study aimed to compare the clinical and radiologic results of in situ pinning and modified Dunn procedure methods in stable-moderate slipped capital femoral epiphyses surgery.
Methods: Slipped capital femoral epiphyses cases between January 2000 and December 2022 were retrospectively analyzed. Stable and moderate cases treated with in situ pinning or modified Dunn procedure and those with a follow-up period longer than 1 year were included. Two groups were formed: the in situ pinning group and the modified Dunn procedure group. Radiologically, postoperative alpha angle, Southwick angle, avascular necrosis, and osteoarthritis rates were compared. Clinically, Harris Hip Score and Merle d'Aubigné score were compared. Total complications were evaluated.
Results: The in situ pinning group consisted of 28 patients and the modified Dunn procedure group consisted of 17 patients. The groups were similar in terms of age, gender, affected side, body mass index, Fahey/O'Brien Classification, preoperative slip angles, and follow-up time. Operation time was shorter in the in situ pinning group (p < 0.001). Postoperative Southwick and alpha angle were lower in the modified Dunn procedure group (p < 0.001). In clinical outcomes, Merle d'Aubigné and Harris Hip Score were higher in the in situ pinning group (p = 0.013, p = 0.005, respectively). The rate of avascular necrosis was higher in the modified Dunn procedure group (p = 0.048). There was no difference between the groups in terms of total complications and osteoarthritis.
Conclusions: In situ pinning has an advantage over the modified Dunn procedure in the treatment of stable-moderate slipped capital femoral epiphyses due to shorter operative time, better clinical outcomes, and fewer avascular necrosis rates. Although Southwick and alpha angle measurements were found to be higher after in situ pinning compared to the modified Dunn procedure, this does not constitute a significant disadvantage in terms of osteoarthritis development in the mid-term.
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Aims & Scope
The Journal of Children’s Orthopaedics is the official journal of the European Paediatric Orthopaedic Society (EPOS) and is published by The British Editorial Society of Bone & Joint Surgery.
It provides a forum for the advancement of the knowledge and education in paediatric orthopaedics and traumatology across geographical borders. It advocates an increased worldwide involvement in preventing and treating musculoskeletal diseases in children and adolescents.
The journal publishes high quality, peer-reviewed articles that focus on clinical practice, diagnosis and treatment of disorders unique to paediatric orthopaedics, as well as on basic and applied research. It aims to help physicians stay abreast of the latest and ever-changing developments in the field of paediatric orthopaedics and traumatology.
The journal welcomes original contributions submitted exclusively for review to the journal. This continuously published online journal is fully open access and will publish one print issue each year to coincide with the EPOS Annual Congress, featuring the meeting’s abstracts.
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