Three-plane shoulder joint range-of-motion measuring instrument for comparison before and after frozen shoulder release operation

Abstract

The invention relates to a three-plane shoulder joint motion range measuring instrument for comparison before and after release of a frozen shoulder, and relates to the technical field of orthopedic rehabilitation measuring instruments. The measuring instrument comprises a base, a vertical column, a horizontal plane track, a coronal plane track, an angle dial, a pre-operation pointer and a post-operation pointer. The vertical stand column is adjustable in height and is arranged on the base; the horizontal plane track is arranged in the front upper direction of the vertical stand column and is used for measuring the abduction range of motion; the coronal plane track is arranged above the vertical stand column and is used for measuring forward flexion and backward extension motion ranges; the two rails are spatially and perpendicularly crossed, and an axis positioning device is arranged at the intersection. Each angle dial is provided with two pointers which can be independently adjusted and locked, and the pointers are the pre-operation pointer used for recording the pre-release operation angle and the post-operation pointer used for recording the post-release operation angle. The device adapts to patients with different body types through the height-adjustable vertical stand column, motion range measurement of three planes including anteflexion, abduction and posterior extension is completed on the same device, and visual comparison of angles before and after a debonding operation is achieved through the design that two needles are arranged on the same disc. The technical problems that a traditional measurement mode is tedious in operation, inconvenient in data comparison and non-uniform in measurement benchmark are solved, and the method is particularly suitable for instant curative effect evaluation and postoperative rehabilitation follow-up visit of manipulation release under anesthesia of frozen shoulder patients.

Description

Technical Field

[0001] This invention relates to the field of orthopedic rehabilitation measuring instruments, specifically to a special device for comparing the range of motion of frozen shoulder patients before and after manual release under anesthesia. Background Technology

[0002] Frozen shoulder (adhesive capsulitis of the shoulder) is a common shoulder joint disease. Its core pathological change is the adhesion and fibrosis of the shoulder joint capsule, which leads to significant limitation of the range of motion in the three planes of flexion, abduction, and extension. Manual release of the shoulder joint under anesthesia is an effective treatment for frozen shoulder, and its efficacy is directly reflected in the degree of improvement in the range of motion in the three planes after surgery. Currently, the following technical problems exist in clinical evaluation of the effectiveness of frozen shoulder release surgery: 1. Separate three-plane measurements: flexion, abduction, and extension require separate measurements using different goniometers, which is cumbersome and particularly unsuitable for rapid assessment under anesthesia; 2. Inconvenient pre- and post-release comparison: Pre- and post-operative angles need to be recorded separately, lacking a tool for direct comparison on the same disc, hindering the surgeon's immediate assessment of the release effect; 3. Inconsistent measurement benchmarks: The center of shoulder joint rotation is difficult to accurately and repeatedly locate during multiple measurements, leading to decreased comparability of pre- and post-operative data; 4. Lack of targeted design: Existing general-purpose goniometers are not optimized for the specific clinical scenario of "immediate comparison before and after release surgery"; 5. Poor body type adaptability: Existing measuring devices are difficult to adjust according to patient body type, affecting measurement accuracy. Therefore, there is an urgent need for a dedicated measuring device specifically designed for frozen shoulder release surgery, capable of simultaneous three-plane measurement, direct pre- and post-operative comparison, and adaptable to different body types. Summary of the Invention

[0003] This invention provides a three-plane shoulder joint range of motion measuring instrument for pre- and post-operative comparison of frozen shoulder release surgery, specifically addressing the following technical problems: 1) Measuring range of motion in three planes (flexion, abduction, and extension) on the same device; 2) Achieving direct and intuitive comparison of pre- and post-operative angles on the same disc, facilitating immediate assessment of therapeutic effects; 3) Ensuring consistent measurement benchmarks before and after surgery, improving data comparability; 4) Adapting to patients of different body types, improving measurement accuracy and applicability; 5) Suitable for rapid and standardized measurements under anesthesia.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a three-plane shoulder joint range of motion measuring instrument for comparison before and after frozen shoulder release surgery, including a base, a vertical column, a measuring track, an axis positioning point, an angle scale, a double needle measuring device, and a transparent material structure.

[0005] The base is located at the bottom of the measuring instrument to support the overall structure and ensure stability during the measurement process.

[0006] The vertical column is mounted on the base and is height-adjustable, allowing the height of the measuring instrument to be adjusted according to the patient's body shape, so that the measuring device is in a suitable position with the patient's shoulder joint.

[0007] The measurement track includes: a horizontal track, located in front of the vertical column and extending along the horizontal plane, used to measure the abduction range of motion of the shoulder joint; and a coronal track, located above the vertical column and extending along the coronal plane, used to measure the flexion and extension range of motion of the shoulder joint. The horizontal track and the coronal track are arranged in a spatially perpendicular intersection, and the intersection point of the two tracks corresponds to the rotation center of the shoulder joint.

[0008] The axial positioning point is located at the intersection of the two tracks and is used to align with the lateral edge of the acromion (a surface landmark of the shoulder joint rotation center) to ensure that preoperative and postoperative measurements are based on the same anatomical center.

[0009] The angle scale includes: an abduction angle scale: located on a horizontal track, used to measure and display the abduction angle; and a flexion and extension angle scale: located on a coronal track, used to measure and display the flexion and extension angles. The angle scale has clear angle graduation lines, ranging from 0° to 180°.

[0010] Each angle dial has two independently adjustable and lockable measuring pointers, including: a preoperative pointer: used to record the maximum range of motion measured before the release surgery; and a postoperative pointer: used to record the maximum range of motion measured after the release surgery. The preoperative and postoperative pointers are distinguished by length markings (such as a short needle before surgery and a long needle after surgery). Each pointer has an independent locking knob in the middle to fix the pointer position.

[0011] The base, vertical column, measuring track, and angle dial are all made of highly transparent medical plastic, allowing the operator to easily observe the relative position of the patient's shoulder joint and the measuring arm through the device.

[0012] Compared with existing technologies, this invention has the following advantages: Integrated three-plane measurement: By spatially intersecting the horizontal and coronal plane tracks, the abduction, flexion, and extension range of motion measurements are completed on the same device, solving the cumbersome problem of requiring multiple goniometers and multiple positioning steps in traditional methods. This is particularly suitable for rapid assessment scenarios under anesthesia. Intuitive pre- and post-operative comparison: Through a dual-needle disc design, pre- and post-operative angles are simultaneously recorded and displayed on the same scale, making the improvement in range of motion readily apparent. This greatly facilitates surgeons in instantly assessing the release effect and can also be used to visually demonstrate rehabilitation progress to patients. Unified measurement benchmark: The axial positioning device ensures that pre- and post-operative measurements are based on the same anatomical center, improving data comparability and research value. Strong adaptability to body type: The height-adjustable vertical column can be adjusted according to the patient's height and body type, ensuring that the measuring device and shoulder joint are in the optimal relative position, improving measurement accuracy. Convenient and accurate operation: The transparent material facilitates observation of the patient's position and the relative position of the measuring arm; the trunk fixation strap reduces compensatory errors; and the upper arm fixation support ensures accurate movement trajectory. Highly Targeted: Designed specifically for frozen shoulder release, perfectly matching actual clinical needs and filling the gap in specialized instruments for this particular scenario. Demonstration Value: The dual-instrument comparison provides a direct visual demonstration of the surgical outcome, facilitating doctor-patient communication. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a plan view of the present invention.

[0015] Figure 3 This is a novel top view of the present invention.

[0016] In the attached diagram: 1 is the base, 2 is the vertical column, 3 is the horizontal track (abduction measurement), 4 is the coronal track (flexion / extension measurement), 5 is the angle dial, 5a is the abduction angle dial, 5b is the flexion angle dial, 5c is the extension angle dial, 6a is the preoperative pointer, 6b is the postoperative pointer, 7 is the axis positioning point, and 8 is the locking knob. Detailed Implementation

[0017] The present invention will now be described in a clearer and more complete manner with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention provides a three-plane shoulder joint range of motion measuring instrument for comparison before and after frozen shoulder release surgery, including a base 1, a vertical column 2, a measuring track, an axis positioning point 7, an angle scale 5, and a double-needle measuring device.

[0019] The base 1 is located at the bottom of the measuring instrument and is used to support the overall structure and ensure stability during the measurement process. The base 1 adopts a weighted design or anti-slip pad to prevent displacement during the measurement process.

[0020] The vertical column 2 is mounted on the base 1 and has an adjustable height. The vertical column 2 can adopt a sleeve-type telescopic thread adjustment structure and is equipped with a locking device to adjust the height of the measuring instrument according to the patient's body shape, so that the measuring device is in a suitable position with the patient's shoulder joint.

[0021] The measurement track includes a horizontal track 3 and a coronal track 4. The horizontal track 3 is located in the upper front direction of the vertical column 2 and extends along the horizontal plane, used to measure the abduction range of motion of the shoulder joint. The coronal track 4 is located above the vertical column 2 and extends along the coronal plane, used to measure the flexion and extension range of motion of the shoulder joint. The horizontal track 3 and the coronal track 4 are arranged perpendicularly in space, and the intersection point of the two tracks corresponds to the rotation center of the shoulder joint.

[0022] The axial positioning point 7 is located at the intersection of the two tracks. It is a marker or a retractable positioning rod used to align with the lateral edge of the acromion (a surface landmark of the shoulder joint rotation center) to ensure that preoperative and postoperative measurements are based on the same anatomical center.

[0023] The angle scale 5 includes an abduction angle scale 5a, a flexion angle scale 5b, and a extension angle scale 5c. The abduction angle scale 5a is mounted on the horizontal track 3 and is used to measure and display the abduction angle. The flexion angle scale 5b and the extension angle scale 5c are mounted on the coronal track 4 and are used to measure and display the flexion and extension angles, respectively. The angle scale 5 has clear angle graduations ranging from 0° to 180°.

[0024] Each angle dial has two independently adjustable and lockable measuring pointers, including a preoperative pointer 6a and a postoperative pointer 6b. The preoperative pointer 6a is used to record the maximum range of motion measured before the release surgery, and the postoperative pointer 6b is used to record the maximum range of motion measured after the release surgery. The preoperative pointer 6a and the postoperative pointer 6b are distinguished by length markings (such as short needle before surgery and long needle after surgery), and each pointer has an independent locking knob 8 at its base to fix the pointer position.

[0025] The base 1, vertical column 2, horizontal track 3, coronal track 4, and angle scale 5 are all made of high-transparency medical plastic, which makes it easy for the operator to observe the relative position of the patient's shoulder joint and the measuring arm through the device.

[0026] Specific practical application: In use, the operator first adjusts the height of the vertical column 2 according to the patient's body shape, aligning the axis positioning point 7 with the lateral edge of the patient's acromion. During preoperative measurements, the operator passively moves the patient's upper arm to its maximum angle in three directions: abduction, flexion, and extension, adjusting the preoperative pointer 6a on each dial to the corresponding angle and locking it. After manual release, keeping the patient's position and the measuring instrument's position unchanged, the passive movement measurements in the above three directions are repeated, adjusting the postoperative pointer 6b on each dial to the new maximum range of motion and locking it. Finally, the operator observes the angles of the preoperative pointer 6a and the postoperative pointer 6b on each dial, which can be directly read and recorded by the operator.

[0027] This measuring instrument features a transparent structure, allowing the operator to directly observe the relative position of the patient's shoulder joint and the measuring arm during measurement. This ensures that the upper arm's movement trajectory aligns with the measuring track, improving measurement accuracy. Furthermore, the height-adjustable vertical column design accommodates the measurement needs of patients with different body types.

[0028] This measuring instrument is not only suitable for measurements under anesthesia in the operating room, but can also be used in outpatient clinics, rehabilitation departments, wards and other settings for initial assessment, rehabilitation follow-up and clinical research of patients with frozen shoulder.

[0029] This invention features a simple structure, convenient operation, and controllable cost, making it widely applicable in orthopedics, rehabilitation, and sports medicine departments at all levels of medical institutions. Through integrated three-plane measurement and a dual-needle intuitive comparison design, it significantly improves the evaluation efficiency and accuracy of frozen shoulder release surgery, demonstrating promising clinical application prospects and market promotion value.

[0030] All equivalent or simple variations made to the structure, features and principles described in this invention are included within the scope of protection of this patent.

Claims

1. A three-plane shoulder joint range of motion measuring instrument for pre- and post-operative comparison of frozen shoulder release surgery, characterized in that, include: Base; A vertical column is mounted on a base, and the vertical column is a height-adjustable structure. Measuring tracks are mounted on the vertical column, including a horizontal track and a coronal track. The horizontal track is located in front of the vertical column and extends horizontally, used to measure shoulder abduction range of motion. The coronal track is located above the vertical column and extends coronally, used to measure shoulder flexion and extension range of motion. The horizontal and coronal tracks are arranged in a spatially perpendicular intersection. A central positioning point is located at the intersection of the two tracks. An angle scale is mounted on the measuring tracks, including an abduction angle scale on the horizontal track and flexion and extension angle scales on the coronal track. A dual-needle measuring device is mounted on each angle scale, including preoperative and postoperative pointers, which are independently adjustable and locked.

2. The three-plane shoulder joint range of motion measuring instrument for pre- and post-operative comparison of frozen shoulder release surgery as described in claim 1, characterized in that, The preoperative and postoperative indicators are distinguished by different length markings.

3. The three-plane shoulder joint range of motion measuring instrument for pre- and post-operative comparison of frozen shoulder release surgery as described in claim 1, characterized in that, Each pointer has an independent locking knob in the middle.

4. The three-plane shoulder joint range of motion measuring instrument for pre- and post-operative comparison of frozen shoulder release surgery as described in claim 1, characterized in that, The base, vertical column, horizontal track, coronal track, and angle dial are all made of high-transparency medical plastic.

5. The three-plane shoulder joint range of motion measuring instrument for pre- and post-operative comparison of frozen shoulder release surgery as described in claim 1, characterized in that, The angle scale lines on the angle dial range from 0° to 180°.

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