1. Displaced humeral surgical neck fractures: classification and results of third-generation percutaneous intramedullary nailing
- Author
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Pascal Boileau, Mikaël Chelli, Adam Wilson, Charles Bessière, Armodios M. Hatzidakis, Philippe Clavert, and Thomas D’ollonne
- Subjects
Adult ,Male ,medicine.medical_specialty ,Percutaneous ,Supraspinatus muscle ,Adolescent ,Radiography ,medicine.medical_treatment ,Avascular necrosis ,Bone Nails ,law.invention ,Intramedullary rod ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,law ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Range of Motion, Articular ,Reduction (orthopedic surgery) ,Aged ,Retrospective Studies ,Fixation (histology) ,Aged, 80 and over ,Fracture Healing ,030222 orthopedics ,biology ,business.industry ,030229 sport sciences ,General Medicine ,Middle Aged ,medicine.disease ,biology.organism_classification ,Fracture Fixation, Intramedullary ,Surgery ,Valgus ,Treatment Outcome ,Shoulder Fractures ,Female ,business ,Follow-Up Studies - Abstract
Background The high rates of complications and reoperations observed with the early designs of first-generation (unlocked) and second-generation (bent design) humeral intramedullary nail (IMNs) have discouraged their use by most surgeons. The purpose of this study was to report the results of a third-generation (straight, locking, low-profile, tuberosity-based fixation) IMN, inserted through a percutaneous approach, for the treatment of displaced 2-part surgical neck fractures. Methods We performed a retrospective review of 41 patients who underwent placement of a third-generation IMN to treat a displaced 2-part surgical neck fracture (AO/OTA type 11A3). The mean age at surgery was 57 years (range, 17-84 years). After percutaneous insertion through the humeral head, the IMN was used as a reduction tool. Static locking fixation was achieved after axial fracture compression (“back-slap” hammering technique). Patients were reviewed and underwent radiography with a minimum of 1 year of follow-up; the mean follow-up period was 26 months (range, 12-53 months). Results Preoperatively, 3 types of surgical neck fractures were observed: with valgus head deformity (Type A = 8 cases), shaft translation without head deformity (Type B = 19 cases), or with varus head deformity (Type C = 14 cases). At final follow-up, all fractures went on to union, and the mean humeral neck-shaft angle was 132° ± 5°. We observed 2 malunions and 1 case of partial humeral head avascular necrosis. No cases underwent screw migration or intra-articular penetration. At last review, mean active forward elevation was 146° (range, 90°-180°) and mean external rotation was 50° (range, 20°-80°). The mean Constant-Murley score and Subjective Shoulder Value were 71 (range, 43-95) and 80% (range, 50%-100%), respectively. Conclusions Antegrade insertion of a third-generation IMN through a percutaneous approach provides a high rate of fracture healing, excellent clinical outcome scores, and a low rate of complications. No morbidity related to the passage of the nail through the supraspinatus muscle and the cartilage was observed. The proposed A, B, and C classification allows choosing the optimal entry point for intramedullary nailing.
- Published
- 2019
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