This was a multicenter retrospective descriptive study conducted in Kinshasa, Democratic Republic of the Congo, from January 2022 to June 2026. Patients came from five hospital facilities: Kinshasa University Hospital, the Sino-Congolese Friendship Hospital, Ngaliema Clinic, Camp Tshatshi Military Hospital, and Renaissance Hospital Center.

A total of 71 patients with tibial plateau fractures were identified. After application of the selection criteria, 38 records containing usable data were retained for analysis.

Patients were included if they had an imaging-confirmed tibial plateau fracture, had been managed at one of the participating centers during the study period, and had usable epidemiological, clinical, radiological, and therapeutic data. Patients with an isolated tibial spine fracture or a fracture below the tibial tuberosity were excluded, as were incomplete records, patients discharged against medical advice, and records that did not allow adequate assessment of management and early outcomes.

Data were retrospectively collected from medical records. They included epidemiological, clinical, radiological, therapeutic, and outcome characteristics. All patients had standard anteroposterior and lateral knee radiographs. Anterior and posterior oblique views at 45 degrees had not been obtained in any patient. Fractures were classified according to the Schatzker classification [6] [7]. Computed tomography (CT) had been performed in only one patient (1/38; 2.6%), and no magnetic resonance imaging (MRI) had been performed. Open fractures were classified according to the Gustilo-Anderson classification when this information was available.

Data were entered and analyzed using Microsoft Excel 2013. Qualitative variables were presented as counts and percentages, rounded to one decimal place. Quantitative variables, particularly age, were described using the mean, standard deviation, median, and range, depending on data availability.

A total of 38 patients were included from the 71 records identified. The mean age was 45.5 years ± 15.3 years, with a median of 47.5 years and a range of 21 to 70 years. The 50 - 69 age group was the most represented (42.1%). Men accounted for 57.9% of the sample, giving a male-to-female ratio of 1.38. Road traffic accidents were the main cause, with 27 cases (71.1%), followed by falls from height with 8 cases (21.1%). The left lower limb was affected in 23 cases (60.5%). Fractures were closed in 31 cases (81.6%) and open in 7 cases (18.4%). Among the open fractures, four were classified as Gustilo-Anderson type II and three as type III. According to the Schatzker classification, type II was the most frequent (34.2%), followed by type I (23.7%). No type V fracture was found in the series (see Table 1).

Table 1.Epidemiological and injury-related characteristics of patients (n = 38).

The clinical presentation was dominated by the combination of swelling and pain, found in 30 patients (78.9%). Deformity associated with pain was observed in 6 cases (15.8%). The injury mechanism was mainly lateral in 26 cases (68.4%), followed by mixed mechanisms in 7 cases (18.4%) and sagittal mechanisms in 5 cases (13.2%). All patients underwent standard anteroposterior and lateral knee radiographs (Figure 1). CT was performed in only one patient (2.6%), and no MRI was performed.

Treatment was surgical in 36 patients (94.7%) and orthopedic in 2 patients (5.3%). Plate-and-screw osteosynthesis was the main treatment modality, used alone in 25 patients (65.8%) (Figure 2 and Figure 3). A plate combined with bone grafting was used in 3 patients (7.9%). Seven patients (18.4%) were treated with an external fixator (Figure 4), and one patient (2.6%) underwent percutaneous screw fixation. Rehabilitation was documented in 30 patients (78.9%) (see Table 2).

Table 2.Treatment modalities (n = 38).

A complication was documented in 11 patients (28.9%). Joint stiffness was the most frequent complication, with 8 cases (21.1% of the entire series), followed by ankylosis in 2 cases (5.3%) and knee osteoarthritis in one case (2.6%). Medium- and long-term follow-up was limited. Thirty-six patients (94.7%) were recorded as lost to follow-up during the period after initial management and/or implant removal, limiting the assessment of late functional and radiological outcomes (see Table 3).

Table 3.Documented complications and follow-up (n = 38).

The mean age of our patients was 45.5 years, with male predominance of 57.9%. This profile is similar to that reported in several African series. In Togo, Abalo et al. found a mean age of 42.7 years and a clear male predominance [8]. More recently, a prospective Ethiopian cohort of 191 patients reported a mean age of 45 years and 73.8% men [7]. This profile partly contrasts with trends observed in some European populations, where incidence increases among older women in a context of low-energy trauma and bone fragility. A Danish population-based study reported a mean age of 52.6 years, with a marked increase in incidence among women after the age of 50 [1].

In our series, road traffic accidents accounted for 71.1% of causes. This predominance is also observed in several series from comparable settings: 84% in Togo [8] and 41.9% in Ethiopia [7]. A large Latin American series of 1165 patients also found a high predominance of road traffic injuries, mainly involving motorcycles [9]. These data suggest that, in young and active populations, tibial plateau fractures remain largely associated with high-energy trauma.

Closed fractures accounted for 81.6% of cases, compared with 18.4% open fractures. This proportion of open fractures is close to the 21.5% reported in the Ethiopian cohort [7], but higher than that of some large international series, particularly that of Reátiga Aguilar et al., in which 93.1% of fractures were closed [9]. Schatzker type II was the most frequent in our series, accounting for 34.2% of cases. This distribution is consistent with several publications in which type II is among the most common patterns. In a European study of 607 patients, Schatzker type II was the most frequent, representing 26.8% of fractures. However, distribution varies considerably according to the traumatic mechanism and the population studied: the Ethiopian series was dominated by type I, whereas a multicenter series of 1165 patients reported a predominance of types VI and V [7]-[10]. The absence of Schatzker type V fractures in our series should therefore be interpreted cautiously. It may be related to the small sample size, recruitment characteristics, and also the limitations of radiographic assessment in complex fractures.

One of the most striking findings of our study is the limited use of CT, which was performed in only one of 38 patients (2.6%), whereas all patients underwent standard radiographs. Conventional radiography remains the essential initial examination, but CT allows more precise assessment of articular depression, comminution, and posterior fragments. A systematic review of 14 studies concluded that 2D CT improves the assessment of several tibial plateau fracture classifications and recommended its use in addition to radiography [5]. Its value goes beyond classification alone. Fleming et al. showed that adding CT to radiographs changed the choice of surgical approach in 28.5% of cases, patient positioning in 27%, and plate location in 34% [11]. Thus, the contrast between 2.6% CT use and 94.7% surgical treatment is an important feature of our series. This situation may reflect constraints in access to cross-sectional imaging in our setting. It also requires some caution when interpreting the radiological classification of complex fractures. The absence of MRI in our series is less surprising. Although MRI is particularly useful for identifying associated meniscal, ligamentous, and cartilage injuries, its preoperative use is not systematic, and its indications in tibial plateau fractures remain debated.

In our series, 94.7% of patients underwent surgery, mainly using plate-and-screw fixation. This high proportion should be interpreted in light of the hospital-based recruitment and the selection criteria of our study. The goals of tibial plateau fracture treatment are to restore the articular surface, mechanical axis, and knee stability while respecting the soft tissues. Open reduction with internal fixation remains a widely used method when less invasive techniques cannot achieve these goals [2]. Plate-and-screw fixation was the main technique in our series. This practice is also reported in African surgical series. In N’Djamena, a series of 35 surgically treated fractures reported plate fixation in 94.2% of cases [12]. An external fixator was used in 18.4% of our patients. This technique retains a role in complex high-energy fractures, particularly when the soft tissues are severely compromised, either as temporary treatment or, in certain situations, as definitive treatment [2].

Complications were documented in 28.9% of patients. Joint stiffness, observed in 21.1% of the entire series, was the most frequent complication. Stiffness is a recognized complication after tibial plateau fracture. A review of complications of surgical treatment reported an incidence ranging from 3% to 18% across series, while one study cited in that review found approximately 20% residual stiffness at one year [6]. This relatively high frequency in our series highlights the importance of stable fixation and appropriate mobilization. The Ethiopian cohort notably showed an association between prolonged immobilization and poorer functional outcomes, emphasizing the value of mobilization and gradual resumption of weight-bearing [7].

Conversely, the low frequency of knee osteoarthritis observed in our study does not allow us to conclude that the risk of post-traumatic osteoarthritis is low. This complication usually occurs late and requires prolonged follow-up.

Our study has several limitations. Its retrospective design is susceptible to incomplete data and heterogeneity in management across the five centers. The small sample size also limits the possibilities for comparative analyses. Because CT was performed in only one patient, some complex fractures may have been insufficiently characterized using standard radiographs alone. The main limitation, however, is inadequate follow-up, with a high proportion of patients lost to follow-up. Late complications, particularly knee osteoarthritis, may therefore have been underestimated, and no robust conclusion can be drawn regarding medium- or long-term functional outcomes.

Despite these limitations, this study provides multicenter data on tibial plateau fractures in Kinshasa and highlights several features of their management, particularly the substantial contribution of road traffic injuries and the very limited use of computed tomography.