Operative treatment of FAI: open hip preservation surgery

Comparison of surgical dislocation and impacting bone graft and surgical dislocation and rotational osteotomy for the treatment of ARCO III femoral head necrosis

Hip preserving procedures are still a challenge in late-stage osteonecrosis of femoral head (ONFH) patients. We aimed to compare the clinical outcomes of surgical dislocation and impaction bone graft and surgical dislocation and rotational osteotomy for treatment of ONFH in Association Research Circulation Osseous (ARCO) stage III patients.We retrospectively reviewed 30 ARCO stage III patients (33 hips) who had surgical dislocation and impaction bone graft or surgical dislocation and rotational osteotomy in our center from June 2012 to December 2017. Baseline characteristics, clinical evaluation using Harris score and radiologic evaluation up to 12 months after surgery were recorded and compared.Fifteen patients (17 hips) were in the surgical dislocation and impaction bone graft group and 15 patients (16 hips) were in the surgical dislocation and rotational osteotomy group. No significant differences in age, gender, etiology, ARCO stage, duration of illness, operation time, and length of hospitalization were observed between the 2 groups. Compared to preoperation Harris score, the Harris score of 6 months postoperation and 12 months postoperation significantly improved. At 12 months postoperation, the excellent and good rate was 76.5% in the impaction bone graft group and 87.5% in the rotational osteotomy group. No significant difference in Harris scores was detected in the 2 groups.Surgical dislocation and impaction bone graft and surgical dislocation and rotational osteotomy had satisfactory 1-year efficacy for ARCO III ONFH patients. Surgical dislocation and rotational osteotomy had better short-term efficacy than surgical dislocation and impaction bone graft.

[Effectiveness comparison between impacting bone graft and rotational osteotomy via surgical hip dislocation approach for avascular necrosis of femoral head at ARCO stage ]

Objective

To compare effectiveness between sequestrum clearance and impacting bone graft and rotational osteotomy on the base of femoral neck via surgical hip dislocation approach for avascular necrosis of femoral head (ANFH) at Association Research Circulation Osseous (ARCO ) stage Ⅲ.

Methods

A clinical data of 24 patients (27 hips) with ANFH at ARCO stage Ⅲ, who met the inclusion criteria between June 2012 and November 2017, was retrospectively analysed. Of all patients, 12 patients (14 hips) were treated with sequestrum clearance and impacting bone graft via surgical hip dislocation approach (group A); and 12 patients (13 hips) were treated with rotational osteotomy on the base of femoral neck via surgical hip dislocation approach (group B). There was no significant difference in gender, age, disease duration, and affected side, type, and stage of the ANFH between 2 groups ( P>0.05). The operation time of each hip and hospitalization stays of each patient in 2 groups were recorded and compared. Imaging examination was performed to observe the blood supply around femoral head, healing of the osteotomy, and the femoral head collapsed. The function of the hip was evaluated by Harris score.

Results

There was no significant difference in operation time and hospitalization stays ( t=-0.262, P=0.797; t=-0.918, P=0.411). All patients were followed up, the follow-up time of group A was 12-28 months (mean, 19.7 months), and the follow-up time of group B was 14-24 months (mean, 17.8 months). The Harris score in groups A and B increased significantly at 6 months and 12 months after operation when compared with preoperative ones ( P<0.05). There was no significant difference between 2 groups at 6 months and 12 months ( P>0.05). At 12 months after operation, according to the Harris scoring, there were 3 hips of excellent, 7 hips of good, and 4 hips of poor, with the excellent and good rate of 71.4% in group A; there were 5 hips of excellent, 7 hips of good, and 1 hip of poor, with the excellent and good rate of 92.3% in group B. Digital substraction angiography was performed at 1 week after operation and indicated that the blood supply around the femoral head was not destroyed during the operation. Imaging examination after operation showed that the osteotomy of the greater trochanter all healed in 2 groups and the osteotomy of the femoral neck healed in group B. Hip collapse occurred in 2 patients (2 hips) of group A at 12 months after operation. No hip collapse occurred in group B.

Conclusion

The rotational osteotomy on the base of femoral neck via surgical hip dislocation approach is superior to sequestrum clearance and impacting bone graft in delaying the collapse and improving the hip function for patients with ANFH at ARCO stage Ⅲ.

Incidence and Complications of Open Hip Preservation Surgery: An ABOS Database Review

Hip preservation surgery encompasses various surgical procedures that have the goal of decreasing the progression of osteoarthritis, preserving normal hip function, and delaying the need for arthroplasty. These procedures can encompass arthroscopic, open, and combined techniques. This study investigated the trends and complications associated with open hip preservation surgery performed by candidates undergoing Part II of the American Board of Orthopaedic Surgery examination. The American Board of Orthopaedic Surgery Part II surgeon case database was queried from the years 2003 to 2013 for Current Procedural Terminology (CPT) codes related to open hip preservation surgery in patients 10 years and older. Patient demographics, fellowship training, geographic location, and complications were extracted from the database. These data were analyzed to determine the incidence by year of individual procedures and complications. During the study period, 644 cases (352 male, 292 female; mean age, 29.7 years) and 730 CPT codes were reported. The most commonly reported fellowship was pediatric orthopedics. No trend was observed in the overall incidence of these surgeries, but there was an increase in the number of cases performed in the Midwest. There were 212 reported complications, with a rate of 33% per case, or 29% per CPT code (range, 12.5%-100% per CPT code). Complications reported ranged from infection to death. The incidence of complications over time showed no discernible trend. Based on the results of this study, the yearly incidence and complications associated with open hip preservation surgery performed by surgeons undergoing board certification should continue at a predictable rate. [Orthopedics. 2017; 40(1):e109-e116.].