Direct Anterior Approach (DAA) or Röttinger: what should be considered when choosing?
Modern hip arthroplasty is evolving toward minimizing soft tissue trauma. One of the most widely discussed minimally invasive techniques is the Direct Anterior Approach (DAA). At the same time, the anterolateral intermuscular Röttinger approach is actively used.
Both methods are considered tissue-sparing, but their anatomical logic and clinical characteristics differ.
Anatomical corridor
DAA is performed through an anterior interval between the tensor fasciae latae and the sartorius muscle. The surgical corridor runs in close proximity to the lateral femoral cutaneous nerve.
The Röttinger approach uses an anterolateral intermuscular interval, avoiding the projection area of the lateral femoral cutaneous nerve. The procedure is performed within a natural anatomical plane while preserving the gluteus medius muscle.
The key difference lies not in incision length, but in the pathway of the surgical corridor.
Risk of lateral femoral cutaneous nerve injury
One of the known features of DAA is the risk of irritation or injury to the lateral femoral cutaneous nerve. In clinical series, the rate of temporary sensory disturbances with DAA may reach 10–20% or higher.
With the anterolateral intermuscular Röttinger approach, the incidence of such complications is around 1%.
Thus, the risk of sensory disturbances with DAA may be approximately 15 times higher compared to the Röttinger approach.
With proper intermuscular technique, the likelihood of neuropathic symptoms approaches zero.
Importantly, these are typically sensory disturbances (paresthesia, numbness), not injury to major motor nerves.
Exposure and component positioning
The anterolateral intermuscular approach provides stable spatial orientation of the acetabulum and the proximal femur.
Due to its anatomical pathway and the absence of aggressive anterior soft tissue retraction, it allows for:
• precise cup placement;
• accurate control of inclination and anteversion;
• proper restoration of limb length;
• predictable positioning of the femoral component.
The geometry of the surgical field makes this approach particularly suitable for navigation and robotic-assisted systems.
(For more details, see “Can the Röttinger approach be combined with robotic navigation?”)
Functional recovery
Preservation of the gluteus medius muscle in the Röttinger approach reduces the risk of postoperative limping and supports more stable gait recovery.
(For biomechanical details, see “Why the intermuscular approach reduces the risk of limping after surgery?”)
Individual factors
The choice of approach depends on:
• patient anatomy;
• body mass index;
• severity of deformity;
• surgeon’s experience;
• need for robotic assistance.
No single method is universal; however, the intermuscular technique offers a balance between anatomical preservation and technological compatibility.
DAA and the Röttinger approach are two minimally invasive techniques based on different anatomical principles.
The anterolateral intermuscular Röttinger approach is characterized by:
• significantly lower risk of lateral femoral cutaneous nerve injury;
• more stable surgical exposure;
• favorable conditions for precise component positioning;
• high compatibility with robotic technologies.
The final choice should always be based on clinical evaluation and the surgeon’s professional judgment.
