Pediatric diaphyseal fractures of both the radius and ulna are common injuries, and optimal management remains debated due to variations in remodeling potential and fracture stability. Conservative treatment continues to be widely used, but its functional outcomes require ongoing evaluation. Methods:A prospective study was conducted on 30 children aged 4–14 years with closed diaphyseal both-bone forearm fractures treated by closed reduction and above-elbow casting. Patients were followed at regular intervals for six months with serial radiographs to monitor angulation and clinical assessment of forearm rotational arcs. Final functional outcomes were graded based on rotational loss. Results: The majority of fractures involved the middle third of the forearm (56.66%). Early angulation increased slightly due to cast settling but demonstrated progressive correction through remodeling by six months. Among the 27 children completing conservative management, 51.85% achieved excellent outcomes, 33.33% good, and 14.81% fair, with no poor outcomes recorded. Three cases with early loss of reduction required surgical conversion.
Conclusion: Closed reduction and casting provide reliable functional and radiological outcomes for most pediatric diaphyseal forearm fractures when alignment and cast quality are closely monitored. Conservative management remains an effective first-line modality, with surgical intervention reserved for cases demonstrating early instability or failure to maintain acceptable reduction.
Pediatric forearm diaphyseal fractures are among the most frequent orthopedic injuries, accounting for a substantial proportion of upper-limb fractures in children. Because the radius and ulna function as a single rotational unit, even small residual deformities can significantly compromise pronation and supination, making anatomical alignment critical for long-term outcomes [1]. Traditionally, closed reduction and casting have been the preferred management strategy owing to the strong remodeling potential of growing bones and the biological advantages of a thick, vascular periosteum that promotes rapid union [2].
However, non-operative treatment has been reported to fail in 39–64% of mid-shaft fractures, primarily due to instability or redisplacement during follow-up, prompting increased interest in surgical fixation for selected cases [3,4]. Malunion-related motion loss has been described when residual angulation exceeds the remodeling threshold, especially in older children with diminishing growth potential [5]. Moreover, fractures located in the proximal third of the forearm tend to remodel less effectively, contributing to persistent functional limitations when inadequately reduced [6].
While surgical options such as elastic intramedullary nailing or plate fixation can reliably restore alignment, these procedures carry risks including infection, soft-tissue irritation, hardware migration, and the need for secondary implant removal [7]. Several comparative studies have shown that, when acceptable reduction is achieved and cast parameters such as cast index are optimized, conservative treatment yields outcomes equivalent to operative management while avoiding surgical morbidity [8]. This supports continued reliance on non-surgical treatment for most pediatric forearm shaft fractures, provided that alignment remains within accepted limits.
Debate remains regarding the precise thresholds for acceptable angulation, displacement, and rotation, especially in children approaching skeletal maturity. Therefore, the present study evaluates the radiological healing pattern, maintenance of alignment, and functional recovery in children with both-bone diaphyseal forearm fractures treated conservatively at a tertiary care center [9,10].
A prospective observational study was carried out in the Department of Orthopaedics, Andhra Medical College, King George Hospital, Visakhapatnam, to assess the outcomes of conservative management of diaphyseal fractures of both the radius and ulna in children. Study Population Children aged 4–14 years presenting with closed diaphyseal fractures of both bones of the forearm were screened and enrolled after obtaining informed written consent from parents or guardians. Inclusion Criteria • Age between 4 and 14 years • Closed fractures involving the diaphyseal region of both radius and ulna • Willingness of parents/guardians to participate in the study and ensure follow-up compliance Exclusion Criteria • Pathological fractures • Open fractures • Metaphyseal or incomplete fractures • Galeazzi or Monteggia fracture-dislocations • Previous operative intervention in the same limb • Inability to complete follow-up Sample Size The sample size was calculated using a prevalence-based formula, resulting in a minimum requirement of twenty-five. To strengthen study validity, thirty eligible children were ultimately included. Treatment Procedure All children underwent closed reduction under sedation and C-arm guidance. • Proximal-third fractures were immobilized in supination. • Mid- and distal-third fractures were immobilized with the forearm in a neutral position. A full-length above-elbow plaster cast was applied in every case. Post-reduction radiographs (AP and lateral views) were obtained to confirm alignment and cast adequacy. Follow-up Protocol Patients were reviewed three days after reduction, weekly for the first four weeks, and monthly thereafter up to six months. At each follow-up, clinical status and radiographs were evaluated for maintenance of reduction. Cases showing unacceptable angulation or cast index deterioration were shifted to surgical management using TENS fixation. Outcome Assessment Radiological evaluation included serial measurements of angulation in AP and lateral planes until fracture union. Functional assessment was conducted at one, three, and six months using the supination–pronation arc and flexion–extension arc of the forearm. Final outcomes were graded as excellent, good, fair, or poor based on rotational loss at the six-month follow-up. Statistical Analysis Data were compiled in Microsoft Excel and analyzed using SPSS Version 23. Continuous variables were expressed as mean ± standard deviation, and categorical variables as frequencies and percentages. The Chi-square test was applied where appropriate, with statistical significance set at p < 0.05.
A total of 30 children aged 4–13 years were included. The majority belonged to the 11–14-year age group (50%; n=15), followed by children ≤5 years (33.3%; n=10) and those aged 6–10 years (16.7%; n=5).
Table 1. Age Distribution of Patients (n = 30)
|
Age Group |
Number |
Percentage |
|
≤ 5 years |
10 |
33.33% |
|
6–10 years |
5 |
16.66% |
|
11–14 years |
15 |
50.00% |
|
Total |
30 |
100% |
Males constituted the majority of cases, representing 63.33% (n=19), while females accounted for 36.66% (n=11).
Table 2. Gender Distribution of Patients (n = 30)
|
Gender |
Number |
Percentage |
|
Male |
19 |
63.33% |
|
Female |
11 |
36.66% |
|
Total |
30 |
100% |
The middle third of the forearm was the most common site of injury, seen in 56.66% (n=17) of cases. Proximal-third involvement was noted in 23.33% (n=7), while distal-third fractures accounted for 20% (n=6).
Table 3. Site of Injury (n = 30)
|
Site of Injury |
Number |
Percentage |
|
Proximal 1/3 |
7 |
23.33% |
|
Middle 1/3 |
17 |
56.66% |
|
Distal 1/3 |
6 |
20.00% |
|
Total |
30 |
100% |
Post-reduction AP angulation improved steadily over the 6-month follow-up.
Table 4. AP Angulation of Radius and Ulna Over Time
|
Follow-up |
Radius (Mean ± SD) |
Ulna (Mean ± SD) |
|
Post-casting |
4.48 ± 0.70 |
4.33 ± 0.61 |
|
1 Month |
6.33 ± 0.61 |
6.19 ± 0.73 |
|
2 Month |
7.26 ± 0.44 |
7.11 ± 0.42 |
|
3 Month |
7.11 ± 0.74 |
6.96 ± 0.64 |
|
4 Month |
6.59 ± 0.50 |
6.44 ± 0.50 |
|
5 Month |
6.04 ± 0.58 |
5.89 ± 0.57 |
|
6 Month |
5.59 ± 0.50 |
5.44 ± 0.57 |
This table illustrates the expected early increase in angulation due to cast settling, followed by progressive remodeling and alignment correction.
Functional outcomes were assessed based on the degree of rotational loss at six months in 27 children who completed conservative treatment.
Table 5. Functional Outcome Grades (n = 27)
|
Outcome Grade |
Number |
Percentage |
|
Excellent |
14 |
51.85% |
|
Good |
9 |
33.33% |
|
Fair |
4 |
14.81% |
|
Poor |
0 |
0% |
|
Total |
27 |
100% |
More than 85% of the children achieved excellent or good outcomes, demonstrating the effectiveness of conservative management when reduction is maintained.
The present prospective study evaluated the functional and radiological outcomes of conservatively managed diaphyseal fractures of both bones of the forearm in children. The findings demonstrated that closed reduction and above-elbow casting continue to offer favourable outcomes when applied within acceptable reduction parameters and followed by structured serial radiological monitoring. The demographic trends in this study, where older children (11–14 years) constituted the largest affected group, are consistent with global epidemiology reporting increased fracture incidence with greater outdoor activity and skeletal loading during early adolescence [11]. A higher male preponderance parallels existing literature attributing this pattern to greater participation in vigorous physical activity [12].
The predominance of middle-third fractures (56.66%) aligns with biomechanical data noting the mid-diaphysis as the most vulnerable segment of the forearm due to its structural and loading characteristics [13]. Serial angulation measurements in AP and lateral planes revealed an initial rise during the first 2–3 months, followed by gradual decline toward 6 months. This pattern is well supported by the known behaviour of pediatric casts, where early settling and muscle atrophy lead to transient increases in angulation before biological remodeling corrects deformity over time [14]. The mean cast index close to the ideal threshold further supports successful maintenance of reduction, as previously emphasized by authors who identified cast index as a strong predictor of redisplacement [15].
Functional outcomes in this study were notably favourable, with 85% of patients achieving excellent or good rotational recovery at 6 months. This mirrors findings from large pediatric cohorts that highlight the robust remodeling potential of the forearm, especially for rotational deformities, provided that early angulation remains within biomechanically acceptable limits [16]. The absence of poor outcomes also reflects timely detection of loss of reduction, which allowed conversion to surgical fixation in the three affected cases, preventing long-term sequelae. Prior studies have stressed that early identification of unstable reductions is critical in avoiding malunion and motion loss [17].
The results reaffirm that conservative management remains a reliable first-line treatment for most pediatric diaphyseal forearm fractures. Surgical intervention should be reserved for cases with unacceptable initial angulation, cast index deterioration, or redisplacement during follow-up [18]. Evidence increasingly supports the selective, rather than routine, use of surgical stabilization, emphasizing that non-operative treatment achieves comparable long-term outcomes with fewer complications [19,20].
The study was limited by its small sample size and single-center design, which may restrict external validity, a concern also highlighted in prior observational works on dental and biomedical outcomes [21,22]. The reliance on standard two-dimensional radiographs without advanced imaging such as CBCT may have reduced diagnostic precision, similar to the imaging constraints noted in earlier morphological and diagnostic studies [23,24]. The six-month follow-up period may not fully reflect long-term remodeling behavior, echoing the temporal limitations reported in previous clinical investigations with short assessment windows [25]. Functional outcome measurements were based on manual goniometry rather than digital or imaging-assisted assessment, a limitation comparable to measurement variability issues acknowledged in contemporary diagnostic research [26].
This prospective analysis demonstrates that conservative management of pediatric diaphyseal both-bone forearm fractures provides excellent clinical and functional outcomes when meticulous reduction and vigilant serial monitoring are ensured. Most children in the study achieved full or near-full restoration of rotational function by 6 months, and radiological remodeling followed the expected trajectory of early angulation increase followed by gradual correction. Middle-third fractures constituted the majority and responded well to closed reduction and casting. The low rate of loss of reduction and the absence of poor functional outcomes further reinforce the suitability of non-operative treatment as a primary modality. Surgical intervention was required only in cases where early follow-up revealed unacceptable angulation or cast index deterioration. Overall, the findings support the continued role of conservative treatment as an effective, safe, and dependable approach for managing these common pediatric injuries.