Radiographic Parameters to Predict Union after Volar Percutaneous Fixation of Herbert Type B1 and B2 Scaphoid Fractures

Mostafa Mahmoud, Mohamed Hegazy, Sherif Ahmed Khaled, Nasef Mohamed Nasef Abdelatif, Walid Osman, John C. Elfar

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Purpose To study the angle of screw placement in relation to the scaphoid fracture plane and its effect on union after percutaneous fixation of scaphoid waist fractures. Methods Twenty-four consecutive scaphoid waist fractures were retrospectively evaluated for the orientation of screws in relation to the fracture plane using a method in which the sum-of-smaller angles (SSA) in 3 different radiographs were used to correlate with time to fracture union. Results All but one patient achieved union after percutaneous fixation of the scaphoid. Another patient required revision surgery within the study period for inadequate fixation. A shortened time to union was significantly correlated to larger SSA. Conclusions SSA may be a reasonable predictor of union after percutaneous fixation of scaphoid waist fracture. It can be reliably calculated using plain radiographs. An SSA of 190° or more correlated with union by 8 weeks postoperatively. Type of study/level of evidence Prognostic IV.

Original languageEnglish (US)
Pages (from-to)203-207
Number of pages5
JournalJournal of Hand Surgery
Volume41
Issue number2
DOIs
StatePublished - Feb 1 2016

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All Science Journal Classification (ASJC) codes

  • Surgery
  • Orthopedics and Sports Medicine

Cite this

Mahmoud, Mostafa ; Hegazy, Mohamed ; Khaled, Sherif Ahmed ; Abdelatif, Nasef Mohamed Nasef ; Osman, Walid ; Elfar, John C. / Radiographic Parameters to Predict Union after Volar Percutaneous Fixation of Herbert Type B1 and B2 Scaphoid Fractures. In: Journal of Hand Surgery. 2016 ; Vol. 41, No. 2. pp. 203-207.
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abstract = "Purpose To study the angle of screw placement in relation to the scaphoid fracture plane and its effect on union after percutaneous fixation of scaphoid waist fractures. Methods Twenty-four consecutive scaphoid waist fractures were retrospectively evaluated for the orientation of screws in relation to the fracture plane using a method in which the sum-of-smaller angles (SSA) in 3 different radiographs were used to correlate with time to fracture union. Results All but one patient achieved union after percutaneous fixation of the scaphoid. Another patient required revision surgery within the study period for inadequate fixation. A shortened time to union was significantly correlated to larger SSA. Conclusions SSA may be a reasonable predictor of union after percutaneous fixation of scaphoid waist fracture. It can be reliably calculated using plain radiographs. An SSA of 190° or more correlated with union by 8 weeks postoperatively. Type of study/level of evidence Prognostic IV.",
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Radiographic Parameters to Predict Union after Volar Percutaneous Fixation of Herbert Type B1 and B2 Scaphoid Fractures. / Mahmoud, Mostafa; Hegazy, Mohamed; Khaled, Sherif Ahmed; Abdelatif, Nasef Mohamed Nasef; Osman, Walid; Elfar, John C.

In: Journal of Hand Surgery, Vol. 41, No. 2, 01.02.2016, p. 203-207.

Research output: Contribution to journalArticle

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AB - Purpose To study the angle of screw placement in relation to the scaphoid fracture plane and its effect on union after percutaneous fixation of scaphoid waist fractures. Methods Twenty-four consecutive scaphoid waist fractures were retrospectively evaluated for the orientation of screws in relation to the fracture plane using a method in which the sum-of-smaller angles (SSA) in 3 different radiographs were used to correlate with time to fracture union. Results All but one patient achieved union after percutaneous fixation of the scaphoid. Another patient required revision surgery within the study period for inadequate fixation. A shortened time to union was significantly correlated to larger SSA. Conclusions SSA may be a reasonable predictor of union after percutaneous fixation of scaphoid waist fracture. It can be reliably calculated using plain radiographs. An SSA of 190° or more correlated with union by 8 weeks postoperatively. Type of study/level of evidence Prognostic IV.

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