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The effect of teriparatide on fracture healing after atypical femoral fracture: A systematic review and meta-analysis

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Abstract

Mini abstract

This meta-analysis demonstrated that a greater prevalence of delayed union and nonunion and a longer time to fracture healing in the group that did not receive TPTD treatment after AFFs than in the group that received TPTD treatment.

Purpose

To date, there is no hard evidence for medical management after atypical femoral fracture (AFF), even though weak data indicate faster healing with teriparatide (TPTD). Herein, we aimed to investigate the effect of postfracture TPTD treatment on AFF healing using a pairwise meta-analysis focusing on delayed union, nonunion, and fracture healing time.

Methods

A systematic search of the MEDLINE (PUBMED), Embase, and Cochrane Library databases was performed for studies investigating the effect of TPTD after AFF up to October 11, 2022. We compared the incidence of delayed union and nonunion and the time of fracture healing between the TPTD ( +) and TPTD (-) groups.

Results

The 6 studies analyzed a total of 214 AFF patients, including 93 who received TPTD therapy after AFF and 121 who did not. The pooled analysis showed a significantly higher rate of delayed union in the TPTD (-) group than in the TPTD ( +) group (OR, 0.24; 95% CI, 0.11–0.52; P < 0.01; I2 = 0%), and a higher nonunion rate was observed in the TPTD (-) group than in the TPTD ( +) group with low heterogeneity (OR, 0.21; 95% CI, 0.06–0.78; P = 0.02; I2 = 0%). The TPTD (-) group required 1.69 months longer to achieve fracture union than the TPTD ( +) group, with statistical significance (MD =  − 1.69, 95% CI: − 2.44 to − 0.95, P < 0.01; I2 = 13%). Subgroup analysis for patients with complete AFF showed that the TPTD (-) group had a higher rate of delayed union with low heterogeneity (OR, 0.22; 95% CI, 0.10–0.51; P < 0.01; I2 = 0%), but there was no significant difference in the nonunion rate between TPTD ( +) and TPTD (-) groups (OR, 0.35; 95% CI, 0.06–2.21; P = 0.25; I2 = 0%). Fracture healing took significantly longer in the TPTD (-) group (MD =  − 1.81, 95% CI: − 2.55 to − 1.08; P < 0.01; I2 = 48%). The reoperation rate showed no significant difference between the two groups (OR, 0.29; 95% CI, 0.07–1.20; P = 0.09; I2 = 0%).

Conclusions

The current meta-analysis supported the hypothesis that TPTD treatment following AFF might benefit fracture healing, lowering the rate of delayed union and nonunion and shortening the fracture healing time.

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Funding

This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2020R1F1A1063582).

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Authors and Affiliations

  1. Department of Orthopedic Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea

    Seong-Eun Byun

  2. Department of Orthopedic Surgery, Keimyung University Dongsan Medical Center, Daegu, Republic of Korea

    Kyung-Jae Lee

  3. Department of Orthopedic Surgery, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea

    Won Chul Shin

  4. Department of Orthopedic Surgery, Pusan National University Hospital, Pusan, Republic of Korea

    Nam Hoon Moon

  5. Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea

    Chul-Ho Kim

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Correspondence to Chul-Ho Kim.

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Seong-Eun Byun, Kyung-Jae Lee, Won Chul Shin, Nam Hoon Moon, and Chul-Ho Kim declare that they have no conflict of interest.

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While this study involved human participants, neither ethical approval nor the acquisition of informed consent from participants was required because all data were based on previously published studies and were anonymously analyzed without any potential harm to the participants.

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Appendix 1

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figure 5

The literature search algorithm and the results from relevant clinical studies

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Byun, SE., Lee, KJ., Shin, W.C. et al. The effect of teriparatide on fracture healing after atypical femoral fracture: A systematic review and meta-analysis. Osteoporos Int 34, 1323–1334 (2023). https://doi.org/10.1007/s00198-023-06768-w

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