Clinical trial NCT03975426: Absorbable Screws to Treat Anterior-Superior Iliac Spine Avulsion Fractures
Official title: The Use of Absorbable Screws to Treat Children and Adolescents With Anterior-Superior Iliac Spine Avulsion Fractures
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Fractures, Bone
Pediatrics
Lead sponsor: Children's Hospital of Chongqing Medical University
Sponsor class: OTHER
First posted: 2019-06-05
Enrollment: 59
Sex: ALL
Minimum age (years): 8
Maximum age (years): 18
Standard ages: CHILD
ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: RETROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: This study was a retrospective review of one center's experience of treating avulsion fractures of the ASIS in children and adolescents. All patients were evaluated and treated in the same hospital.

Brief summary: There is some debate over the best treatment for anterior-superior iliac spine (ASIS) avulsion fractures although conservative treatment can be applied when there are no neurological symptoms. Open reduction and internal fixation can be performed for dislocations exceeding 1.5 cm, or in patients requiring a short period of convalescence, although a second operation is subsequently required to extract osteosynthetic material. In this paper, we introduce the use of absorbable screws as a new fixation material for the second round of surgery.

Detailed description: To investigate the feasibility of absorbable screws as a new fixation material for the treatment of ASIS avulsion fractures in children and adolescents.The investigator plan to retrospectively analyzed 59 patients diagnosed with ASIS avulsion fractures in our hospital between Jan 2009 and Dec 2016. These patients were divided into two groups: group A (conservative group) and group B (absorbable screws). Group A received conservative therapy involving bed rest with the affected lower extremity positioned with the hip and knee in flexion to ensure minimal tension of the muscles attached to the ASIS avulsion fracture. Group B received open reduction and internal fixation with fixation by absorbable screws. Six weeks and three months after treatment, all patients were assessed for range of motion (ROM) and by X-ray as they returned to activity. One week after treatment, the American Academy of Orthopaedic Surgeons (AAOS) lower limb and hip score was used to evaluate hip function; the same scores were also determined during follow-up at 1, 3, 6 and 12 months postoperatively.

Eligibility criteria: Inclusion Criteria:

* avulsion fracture of the ASIS
* new fractures

Exclusion Criteria:

* old avulsion fractures
* delayed fractures
* multiple fractures.

Primary outcomes:
measure: American Academy of Othopaedic Surgeons lower limb and hip scores
timeFrame: 6th month
measure: American Academy of Othopaedic Surgeons lower limb and hip scores
timeFrame: 6th month
measure: American Academy of Othopaedic Surgeons lower limb and hip scores
timeFrame: 6th month
measure: American Academy of Othopaedic Surgeons lower limb and hip scores
timeFrame: 6th month
measure: American Academy of Othopaedic Surgeons lower limb and hip scores
timeFrame: 6th month
measure: American Academy of Othopaedic Surgeons lower limb and hip scores
timeFrame: 6th month
measure: American Academy of Othopaedic Surgeons lower limb and hip scores
timeFrame: 6th month
Secondary outcomes:
Other outcomes:
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