Lumbar puncture is an important and commonly performed clinical technique for diagnostic and therapeutic purposes. When the usual surface anatomical landmarks (for example, palpation of spinous processes and interspace identification) are readily identifiable, a landmark-guided approach is often used. However, in some patient populations those landmarks are unreliable or absent, creating a need for alternative localization strategies.
The authors of the source article highlight that patients with structural spinal abnormalities — notably spine deformity — and those who have undergone prior lumbar surgery such as fusion represent groups in which conventional landmark-based lumbar puncture may be technically difficult or unsuccessful. In these situations, bedside imaging can facilitate accurate targeting and improve the feasibility of the procedure.
Spinal deformity (for example, scoliosis or kyphosis) and prior lumbar fusion alter the usual bony landmarks and interlaminar spaces clinicians rely on for needle trajectory and level selection. The source article states that in such patients, using surface anatomical landmarks for localization is often challenging, which can result in failed attempts, multiple passes, or the need for alternative approaches.
These challenges motivate consideration of imaging-guided techniques to visualize the relevant anatomy directly and plan an approach that avoids obstacles introduced by deformity or postoperative changes.
According to the article abstract, real-time ultrasound guidance can be employed to complete lumbar puncture in patients with difficult anatomy. Ultrasound provides the operator with dynamic visualization of posterior spinal elements, interlaminar spaces, and the soft-tissue window, allowing identification of a suitable needle entry site and trajectory when palpation is unreliable.
The source frames ultrasound as a practical option in this context: when surface landmarks are not dependable, ultrasound may be used at the bedside to localize the appropriate interspace and guide needle insertion. The article presents ultrasound guidance as an applicable technique for patients with spinal deformities and after lumbar fusion.
The core contribution of the article is a case-based report: the authors describe two representative difficult lumbar puncture cases in which ultrasound guidance was used. The abstract indicates the article both reports these cases and provides a detailed review and summary of the application and clinical experience of ultrasound-guided lumbar puncture in such patients.
Because the publicly available abstract focuses on the rationale and scope, it does not include the granular case-level data in the abstract text. The article therefore serves two roles: (1) to illustrate, via two representative cases, how ultrasound can enable completion of lumbar puncture when landmarks are obscured or altered, and (2) to synthesize the authors’ practical experience and considerations for using ultrasound-guided techniques in similar clinical scenarios.
The information available in the abstract is limited. Specific clinical details that are not reported in the abstract and therefore cannot be summarized from the source include:
These omissions reflect the available abstract content; the full article may contain these details but they were not present in the source abstract provided.
From the material presented in the source, clinicians should recognize that ultrasound-guided lumbar puncture is a viable option when conventional surface landmarks are unreliable—particularly in patients with spine deformity or prior lumbar fusion. The article reinforces that real-time ultrasound can be used to localize an appropriate interspace and guide needle placement, potentially enabling successful completion of lumbar puncture in otherwise difficult cases.
Practitioners interested in incorporating ultrasound guidance for neuraxial access should consult the full report for the authors’ detailed review and clinical experience, and supplement that with existing guidelines and technique resources for ultrasound-assisted neuraxial procedures. The abstract identifies ultrasound guidance as an applicable tool but does not provide the procedural specifics or outcome data needed to fully evaluate technique efficacy or safety from this source alone.